Resident Brown Recluse Spider Bites - EMRA

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Resident Brown Recluse Spider Bites - EMRA
Resident
     Official Publication of the Emergency Medicine Residents’ Association
                                                        June/July 2020

Brown Recluse
                                                             VOL 47 / ISSUE 3

 Spider Bites

                            Pitfalls of US-guided
                                IV Placement
                                      ITP Beyond
                                      the Boards
                                      Maintaining
                                      Wellness in
                                      Residency
Resident Brown Recluse Spider Bites - EMRA
Exciting opportunities at
                                                                                 our growing organization
                                                                                 • Adult and Pediatric Emergency Medicine Faculty positions
                                                                                 • Medical Director
                                                                                 • Vice Chair, Clinical Operations
                                                                                 • Vice Chair, Research
                                                                                 • Medical Student Clerkship Director

Penn State Health, Hershey PA, is expanding our health system. We                                                                 What the Area Offers:
offer multiple new positions for exceptional physicians eager to join our                                                         We welcome you to a community that
dynamic team of EM and PEM faculty treating patients at the only Level I                                                          emulates the values Milton Hershey
Adult and Level I Pediatrics Trauma Center in Central Pennsylvania.                                                               instilled in a town that holds his name.
                                                                                                                                  Located in a safe family-friendly setting,
What We’re Offering:
                                                                                                                                  Hershey, PA, our local neighborhoods boast
 • Salaries commensurate with qualifications
                                                                                                                                  a reasonable cost of living whether you
 • Sign-on Bonus
                                                                                                                                  prefer a more suburban setting or thriving
 • Relocation Assistance
                                                                                                                                  city rich in theater, arts, and culture. Known
 • Retirement options, Penn State University Tuition Discount, and so
                                                                                                                                  as the home of the Hershey chocolate
   much more!
                                                                                                                                  bar, Hershey’s community is rich in history
What We’re Seeking:                                                                                                               and offers an abundant range of outdoor
 • Emergency Medicine trained physicians with additional training in any                                                          activities, arts, and diverse experiences.
   of the following: Toxicology, Ultrasound, Geriatric Medicine, Pediatric                                                        We’re conveniently located within a
   Emergency Medicine, Research                                                                                                   short distance to major cities such as
 • Completion of an accredited Residency Program.                                                                                 Philadelphia, Pittsburgh, NYC, Baltimore,
 • BE/BC by ABEM or ABOEM                                                                                                         and Washington DC.

                                                                                    FOR MORE INFORMATION PLEASE CONTACT:
                                                                                    Heather Peffley, PHR FASPR at: hpeffley@pennstatehealth.psu.edu

                      Penn State Health is committed to affirmative action, equal opportunity and the diversity of its workforce. Equal Opportunity Employer – Minorities/Women/Protected Veterans/Disabled.
Resident Brown Recluse Spider Bites - EMRA
Time for Gratitude
Hello EMRA Family,                                   “When I was a boy, and I would see       exhaustion, and unrelenting body aches.

I
   will be honest; the past few months           scary things in the news, my mother          Pre-coronavirus, I was a very active person
   have been difficult, as I am sure it has      would say to me, ‘Look for the helpers.      — mentally and physically. I worked out
   been for a lot of you as well. It has been    You will always find people who are          several times a week, read most days out of
a rollercoaster of emotions riddled with         helping’ “ — this quote by Mr. Rogers        the week, and felt motivated to continuously
guilt, fear, and frustration, often leaving      rings truer than ever today. During the      progress upward in my career. The STOP
me feeling emotionally exhausted and             pandemic, even while witnessing so many      the virus placed on my body and life was
physically unmotivated.                          horrid things, I have also been blessed to   jarring. A week and a half flew by while I
     COVID-19, the novel virus that forever      see so many helpers.                         mostly moved between my bed and chair.
changed the landscape of medicine                    I have been inspired by medical          I felt unmotivated and discouraged. I felt
and society. Globally and nationally, it         students who have used social media to       guilty about missing my shifts while I
brought out and highlighted our gross            gather PPEs to donate. Encouraged by         recovered. I felt saddened, by proxy, when I
shortcomings as a medical institution.           everyday folks pooling their                 spoke to my parents on video chat, who had
     It has stripped us of some of life’s most   resources to provide for a struggling        to stay away from their sick daughter. I felt
joyous moments: weddings, graduation,            neighbor. Astonished by the physician        let-down that I was getting behind on my
concerts, baby showers.                          mothers and fathers living outside their     residency and EMRA tasks.
     It has taken lives. Countless of            homes, isolating themselves from their
                                                                                                   Now, close to 2 months post-recovery, I
colleagues/family members/friends have           family and children, while they proudly
                                                                                              am THANKFUL.
succumbed to this virus, sometimes at the        continue their mission of care and service
                                                                                                   I am thankful for that ‘down-time’: time
peak of their lives.                             to others.
                                                                                              to stop and focus on just myself helped me
     It has robbed us of humanity. We’ve             I have also formed more profound
                                                                                              re-prioritize my life. I have used this time
had to tell patients’ family members, while      connections with friends and colleagues
                                                                                              to reach out to friends from college and
they are crying in front of us, that they will   who have only existed in a superficial
                                                                                              medical school that I have not spoken to in
not be able to visit their loved ones in the     realm until now. We have had more time
                                                                                              a few months. I used the lack of distractions
hospital once admitted. And we’ve had to         to open up and speak vulnerably and
                                                                                              to reconnect with my husband and friends
see our patients die in an empty room.           honestly, and connections have been
                                                                                              and helped strengthen friendships and
     This has created an incredible mental       forged and strengthened by relating to
                                                                                              relationships.
and spiritual strain on all of us. This is a     collective trauma. One of my favorite
trauma we will be dealing with for the rest      questions that prompted many of these             I am filled with newfound gratitude
of our lives.                                    connections/conversations has been:          when I go for a run on a warm day, and I
     But let’s not let this virus take           What’s one positive you have                 can breathe in the air deeply without the
anything more from us.                           learned from this time?                      dyspnea I had felt for weeks. Speaking with
     Let’s not let it take our ability to            This has led to some of the most         family members on video chat has taken on
connect emotionally, even if it’s through        authentic answers. I witnessed melancholy    a new sense of joy as I am lucky enough to
our phones and laptops. Let’s not let it take    colleagues light up when answering. This     be present at this moment to be able to do it.
our ability to open up and be vulnerable to      question truly makes us re-frame the              To my #EMRAFamily, times are tough.
others as we share our valleys and peaks.        situation at hand.                                But don’t let this virus take away
Let’s let it serve as a reminder to prioritize       I implore you all to ask this question   anything more than it already has. Take
ourselves and the people we care about           AND share authentically yourself. I will     the time to talk to our colleagues, friends,
most. Friends, our careers are important,        help start the conversation:                 family. Do not repress your thoughts.
but the connections we create in this world          I contracted COVID-19 in March.          Journal and self-reflect authentically. It’s
with our fellow humans are what makes            What I thought was just nasal congestion     ok not to be ok. Reach out when you need
life meaningful.                                 turned into dyspnea on exertion, extreme     to. We are all in this together. ¬
Resident Brown Recluse Spider Bites - EMRA
Facing COVID-19
                                         together on the
                                         front lines.

Stronger
Togeth
Together
Stronger together means leadership by front-line physicians and
advanced providers. We are a physician-led and -owned partnership
united by compassion and collaboration. Our clinicians deliver
integrated acute care at practice sites across the nation, working
together to achieve our greatest goal: saving lives.

Learn how Vituity’s clinicians are fighting
the epidemic at vituity.com/COVID-19.

Vituity ® is a registered trademark of CEP America, LLC.
© CEP America, LLC, All Rights Reserved.
Resident Brown Recluse Spider Bites - EMRA
TABLE OF CONTENTS
5    Transition, Not
     Competition                 28 DIY: CI
                                    Tips for Getting into
                                                                               EDITORIAL STAFF

     PRESIDENT’S MESSAGE                                                        EDITOR-IN-CHIEF
                                      Clinical Informatics                     Priyanka Lauber, DO
                                      INFORMATICS,
6    Update from the ACGME
     Review Committee for
                                      CAREER PLANNING
                                                                           Lehigh Valley Health Network

                                                                                 EDITORIAL TEAM
     Emergency Medicine
     LEADERSHIP REPORT           32 Until Help Arrives –
                                    Prehospital Emergency
                                                                                 Marc Cassone, DO
                                                                              Geisinger Medical Center
                                                                                 Brian Freeman, DO
                                      Education All Citizens
8    Systemic Ioxoscelism
     TOXICOLOGY                       Should Have
                                                                                  Lakeland Health
                                                                                 Sean Hickey, MD
                                      PREHOSPITAL/DISASTER
11   The Phenomenon
     of Tumor Neglect
                                      MEDICINE
                                                                                Mount Sinai Hospital
                                                                                Whitney Johnson, MD
     MENTAL HEALTH               34   Maintaining Wellness
                                      as an EM Resident
                                                                                    UCSF-Fresno
                                                                                Jeremy Lacocque, DO
12   Atypical Hemolytic
     Uremic Syndrome
                                      WELLNESS                                    UCSF EMS Fellow
                                                                                Jason Silberman, MD
     CRITICAL CARE
                                 36   A Letter to Graduating
                                      Residents & Fellows
                                                                               University of Tennessee

14   Recognition and
     Management of Nerve
                                      During the COVID-19
                                      Pandemic
                                                                                 Samuel Southgate
                                                                              University of Connecticut

     Agent Exposure                   CAREER PLANNING                              MSC Editor
     TOXICOLOGY                                                                    David Wilson

16   Reviewing Accidental        38 Room 16 Right
                                      HEART OF EM
                                                                          Sidney Kimmel Medical College
                                                                           Thomas Jefferson University
     Hypothermia                                                                 ECG Faculty Editor
     WILDERNESS MEDICINE
                                 39 Dexamethasone
                                    in ARDS
                                                                                Jeremy Berberian, MD
                                                                                   ChristianaCare
18 ITP Beyond the Boards
   HEMATOLOGY
                                      CRITICAL CARE/PULMONARY
                                                                                 PEM Faculty Editor

                                 41 A Resident’s Intro to Billing
                                                                     Yagnaram Ravichandran, MBBS, MD, FAAP

20   A Case of Severe
     Malaria in the ED
                                      ADMIN & OP
                                                                      Dayton Children’s Hospital Pediatric ED
                                                                        Clinical Asst. Professor of Pediatrics

                                 43 What
                                                                               Wright State University
     INFECTIOUS DISEASE                  is Surprise Billing…
                                    and Why Should I Care?                  Toxicology Faculty Editor

22   A Pause to Consider
     Strongyloides Stercoralis
                                      HEALTH POLICY                     David J. Vearrier, MD, MPH, FACMT,
                                                                                  FAACT, FAAEM
     in the ED
     INFECTIOUS DISEASE
                                 44 Not Your Mother’s
                                    AAWEP…
                                                                    EM Resident (ISSN 2377-438X) is the
                                      CAREER PLANNING
24 Common   Pitfalls of                                             bi-monthly magazine of the Emergency

                                 49 News & Notes
                                                                    Medicine Residents’ Association (EMRA).
   Ultrasound-Guided                                                The opinions herein are those of the
     Peripheral IV Placement          NEW GUIDES, HEALTH POLICY,    authors and not of EMRA or any institutions,
     ULTRASOUND                       ABEM, AND MORE                organizations, or federal agencies. EMRA
                                                                    encourages readers to inform themselves

26 Implicit Bias Is Both
   Helpful and Harmful,
                                 51 ECG Challenge
                                      INTERPRET AND DIAGNOSE
                                                                    fully about all issues presented. EM Resident
                                                                    reserves the right to edit all material and does
     So What Can We Do?                                             not guarantee publication.

     ADMIN & OPS                 53 Board Review
                                    Questions
                                                                    © Copyright 2020
                                                                    Emergency Medicine Residents’ Association
                                      PEER ASSISTANCE
                                                                                   June/July 2020 | EM Resident 3
Resident Brown Recluse Spider Bites - EMRA
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                                         Emergency Medicine Residents’ Association
4 EMRA | emra.org • emresident.org   www.emra.org | emra@emra.org | @emresidents |
Resident Brown Recluse Spider Bites - EMRA
PRESIDENT’S MESSAGE

                               Transition,
                                  Not
                              Competition
       Hannah R. Hughes, MD, MBA                 electives, and fluctuating patient volumes.   out of the imposter syndrome spiral:
                  President, EMRA                Pre-coronavirus, we would have had time       1. Don’t be afraid to say, “I don’t
                   Chief Resident,               to reflect on the year we just finished,          know.”
   University of Cincinnati Emergency Medicine
                                                 prepare for the year ahead, maybe even            Regardless of where you are in train-
                  @hrh_approved

T
                                                 take that vacation we’ve been dreaming            ing, no one expects you to know it all,
        wo months into my intern year,
                                                 about forever.                                    and this is especially true for early
        I had my first case presented at
                                                     But now?                                      interns who are just getting used to
        Morbidity & Mortality conference.
                                                     Now, we’ve endured weeks of                   being called “Doctor.” As my chief
An elderly man with metastatic prostate
                                                 unremitting high alert. We’ve been,               resident told me early in my intern
cancer came in with back pain and known
                                                 by turns, overwhelmed by volume and               year, “If you were expected to enter
spinal lesions. While his neurologic             driven to distraction by eerily empty             training already knowing everything,
exam was initially normal, he developed          ED waiting rooms. Our students are                residency wouldn’t be a thing.” It’s OK
paraplegia within hours, and it was              sidelined, our graduates are facing               to not know; we’re all here to learn.
missed. I was crushed. Ten years of              unexpected unemployment, and we don’t         2. Demonstrate vulnerability.
undergraduate and graduate education             know what this year will bring.                   Failure is inevitable, whether it’s your
spent aiming to be at the top of my                  It doesn’t make for the                       first patient of intern year or well into
game, only to fail a patient so early in         smoothest transition of all time.                 being an attending. We all are or will
my residency training? It made for a                 As I shift from running our Shock             be #BAFERDs, but we are also human
tough transition from medical student to         and Resuscitation Unit as a third-year            and bound to make mistakes. Sharing
physician.                                       resident to supervising interns as a fourth       those with others requires vulnerabil-
     And here we are again, on the brink of      year, I worry. Have my extracurricular            ity, a demonstration of bravery, not
another transition.                              interests pulled me away from keeping             weakness.
     The start of a new academic year            up with evidence-based medicine? Have I       3. Support one another.
is full of anxiety as we all step into our       run enough resuscitations of critically ill       Life is not a competition. There is no
new roles, regardless of what level we’ve        patients? What if my interns know more            race – and in EM, no finish line (every
reached in training. It’s part of the            than me when I’m supposed to be the one           empty waiting area fills up again).
medical maturation process. But this             teaching them?                                    All those frantic footsteps you hear
year, it just feels… different.                      The spiral always ends with the same          are not people trying to outrun you;
     Being on the front lines of COVID-19,       question: Am I good enough?                       they’re your fellow caregivers, making
it seems as though we’ve matured years               Having an early M&M case shook my             sure you and your patients are not
in just a matter of months, in many ways.        confidence, and the same can be true for          alone. And heads-up: You’re doing the
Yet there’s still this uneasiness as we          role transitions. Self-doubt can be either        same for them, whether you realize it
step into our new roles, particularly in         debilitating or harnessed as a tool for           or not. EM is a team endeavor, not a
the setting of delayed rotations, canceled       growth. Here are 3 reminders that get me          solo sprint. ¬

References available online                                                                                  June/July 2020 | EM Resident 5
Resident Brown Recluse Spider Bites - EMRA
LEADERSHIP REPORT

    Update from the ACGME Review
   Committee for Emergency Medicine
                                                         Breanne Jaqua, DO, MPH
                                                ACGME Review Committee for Emergency Medicine
                                                       Mercy St. Vincent Medical Center
                                                               @BreanneJaqua

  A
         s the resident representative to ACGME’s Review Committee for Emergency Medicine, it is my pleasure and honor to provide
         an RC-EM update to EMRA and the readers of EM Resident magazine.
             Please read on for updates in 5 key areas affecting emergency medicine residents:
                                 Hospital closures                                    Parental leave
                                Diversity in medicine                          Single Accreditation System
                                                                COVID-19
                                                      Ohio Valley Medical Center’s hospital     standardized approach to parental leave
  1. Hospital Closures
                                                  closure was announced in August               policies for resident and fellow parents
       Excluding the global pandemic,             2019.1 All 15 internal medicine and 17        by certifying boards, accreditation
  the most well-known issue in graduate           emergency medicine residents were able        requirements, Sponsoring Institutions,
  medical education over the past year            to transfer to other training programs,       and programs.”4
  was the sudden closure of Hahnemann             and a total of 325 positions were offered         Final recommendations are expected
  University Hospital in the summer of            to the displaced residents.1 This closure     in 2020.
  2019.1 A total of 553 residents and fellows     was different than Hahnemann’s
  from 35 programs were affected by this                                                        3. Diversity
                                                  because Ohio Valley Medical Center did
  abrupt announcement, including 55               not declare bankruptcy, therefore tail             Diversity is an important topic at the
  residents and fellows on J-1 visas.1                                                          ACGME. The revised common program
                                                  coverage was provided to these residents.1
       The response from the medical                                                            requirements that went into effect in July
                                                      The February 2020 ACGME Annual
  community was overwhelming and                                                                2019 included a new core requirement,
                                                  Educational Conference included
  supportive; the ACGME, AMA, AOA,                                                              item I.C., that codifies diversity in
                                                  excellent discussion and recognition of
  AAMC, ECFMG, NRMP, FSMB, ABMS,                                                                graduate medical education.
                                                  the lessons learned from these events and
  and many other medical organizations                                                               “The program, in partnership
                                                  plans for how to be better prepared for
  came together to support the trainees                                                         with its Sponsoring Institution, must
                                                  future hospital closures.1
  affected.1 A total of 1,530 available                                                         engage in practices that focus on
  positions were offered to the displaced         2. Parental Leave                             mission-driven, ongoing, systematic
  trainees, representing a total of 190                                                         recruitment and retention of a diverse
  sponsoring institutions in 39 states.1              Parental/family leave is a topic that     and inclusive workforce of residents,
       Ultimately, 100% of the displaced          has gained a lot of attention in recent       fellows (if present), faculty members,
  residents and fellows transferred to new        months, thanks to the advocacy of the         senior administrative staff members, and
  programs, and 60% were able to stay in          ACGME’s Council of Review Committee           other relevant members of its academic
  the Philadelphia metro area.1 Hahnemann         Residents.4 In the fall of 2019, the          community.”5
  University Hospital declared bankruptcy         ACGME created a multi-disciplinary task            The ACGME hired William A. McDade,
  in addition to closing the hospital, which      force dedicated to this topic. Parental/      MD, PhD, as its first Chief Diversity
  left 1,400+ trainees and alumni without         family leave is a multifaceted issue that     and Inclusion Officer in March 2019.6
  medical liability “tail” coverage.2 A           has ramifications for board eligibility,      Dr. McDade comes to the ACGME from
  $9.3 million settlement was reached in          which is why the task force includes direct   Ochsner Health System in New Orleans,
  March 2020, ensuring liability coverage         collaboration with the American Board of      where he was executive vice president
  for Hahnemann residents, fellows, and           Medical Specialties (ABMS).4                  and chief academic officer. Prior to his
  alumni.3                                            “This work will lead to a more            appointment at Ochsner, Dr. McDade was

6 EMRA | emra.org • emresident.org
Resident Brown Recluse Spider Bites - EMRA
a professor of anesthesia and critical care                    All GME programs can apply for                                  proposed language closed March 25.11
at the University of Chicago.                              osteopathic recognition, which provides                             If approved by the ACGME Board of
    On Feb. 20, 2020, the ACGME                            osteopathic training in graduate medical                            Directors, the new language will take
announced Bonnie Mason, MD, as the                         education.8                                                         effect July 2020.
Vice President of Diversity and Inclusion.7                    As of March 2020, 89% of the 62
Prior to joining the ACGME, Dr. Mason                      previously AOA-accredited emergency                                 6. COVID-19
was the founder and executive director                     medicine programs have an accreditation                                  These are unprecedented times.
of Nth Dimensions. She is also the co-                     status with the ACGME; 28 programs are                              The ACGME has suspended several
founder/chief executive officer of Beyond                  on continued accreditation, 23 on initial                           accreditation-related activities to allow for
the Exam Room, where she has developed                     accreditation, 4 on initial accreditation                           the prioritization of patient care, including
a comprehensive, continuing medical                        with warning, 1 had accreditation                                   self-study activities, accreditation site
education (CME)-accredited business                        withdrawn, and 6 closed.8                                           visits, CLER program site visits, and
of medicine, career development,                                                                                               resident, fellow and faculty surveys.12
leadership, and financial curriculum for                    5. Faculty Protected Time                                               Additionally, the telemedicine
young physicians at the undergraduate                          In the 2019 July revised common                                 supervision requirements that were
and graduate medical education levels.                     program requirements, the stipulation                               scheduled to go in to effect in July of 2020
                                                           regarding core faculty protected time was                           were fast tracked to help the medical
4. Single Accreditation System
                                                           removed. The subsequent outcry from the                             community respond to the pandemic.13
    The single accreditation system will                   emergency medicine9 and family medicine                             The ACGME president and CEO noted
conclude its 5-year transition this year.                  communities inspired the ACGME to                                   in March that 3 areas of priority include
After the completion of the transition,                    create a task force dedicated to this issue.                        maintenance of duty hour requirements,
all GME programs in the United States                          The task force recommended                                      adequate resources and training related to
will be accredited by the ACGME.8 This                     including language that protects                                    COVID-19, and adequate supervision for
brought unique changes to the GME                          core faculty non-clinical time which                                residents and fellows.13
landscape, including a single match                        prompted the emergency medicine review                                   This is a constantly evolving situation;
through the National Resident Matching                     committee to add language to this effect.10                         please check the ACGME’s Newsroom
Program (NRMP).8                                               The open comment period for the                                 online for the latest updates. ¬

   The COVID-19 pandemic has changed how                                                                                               OCTOBER 26-29•2020
                                                                                                                                       D A L L A S             •    T E X A S
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   We know you look forward to the networking, education, and fun that
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   following the recommendations of our communities’ health officials.
                                                                                                                                 For updates, sign up for our ACEP20 interest list at
   We are excited to share with you a freshly re-designed event experience
   that will meet you where you are - whether in Dallas for the live event
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   References available online                                                                                                                  June/July 2020 | EM Resident 7
Resident Brown Recluse Spider Bites - EMRA
TOXICOLOGY

                                                                              ITSY BITSY
                                                                             SPIDER, BIG
                                                                            TIME DANGER
                                                                             Systemic
                                                                           Ioxoscelism
             Michael Simpson, MD                  to as brown recluses and black widows,         basements and attics. Outside, they can
      EMRA Toxicology Committee Chair-elect       though there are other relevant species        be commonly found underneath rocks
       Vanderbilt University Medical Center       within each genus. In this article, we         and the bark of dead trees. They have
             Monisha Veerapaneni                  will cover Loxosceles specifically, but        6 eyes arranged in dyads, while most
      Burrell College of Osteopathic Medicine
                                                  would encourage readers to familiarize         other spiders have 8, and the markings
                    Class of 2023
                  @monieeehearts                  themselves with Lactrodectus as well.          on their torso are said to resemble a

  A
                                                  The Elusive Recluse                            violin or fiddle, though the markings
          20-year-old woman presents to
                                                                                                 are less reliable and have led to the
          the emergency department with               Loxosceles spiders are found in
                                                                                                 misidentification of harmless spiders in
          a painful ulcer to her proximal         certain endemic areas in North and South
                                                                                                 non-endemic areas as brown recluses.
  thigh that she says has grown in size and       America, especially the South, Southeast,
                                                                                                     While definitive epidemiological
  become necrotic over the last 3 days. She       and Southwest United States (Figure 1).
                                                                                                 data is lacking due to the difficulty in
  also reports fever, malaise, and dark               Location in an endemic area is a
                                                                                                 confirming a bite, retrospective data of
  urine for the past day. She has been            strong predictor of a spider belonging to
                                                                                                 359 patients over 11 years from Brazil,
  helping her parents renovate their old          the Loxosceles genus, as these spiders
                                                                                                 where Loxosceles envenomation is
  house in the countryside and believes she       are rare outside of these described
                                                                                                 a significant public health concern,4
  may have been bitten by a spider.               regions.2,3 These spiders are nocturnal
                                                                                                 demonstrates bites in children and adults
                                                  hunters who are not aggressive but
  “Is this a spider bite?”                        will bite if threatened, typically found       up to 59 years of age, with males and
      The ED chief complaint of “spider                                                          females equally represented, and the
                                                  inside homes in dark, quiet areas such as
  bite” is a common one, and as most                                                             most common sites of injuries being the
  residents will realize, the majority (as        FIGURE 2. Brown Recluse Bite                   thigh and the trunk.5 A similar study from
  high as 84% in one study) of these will                                                        Chile demonstrated that 73.6% of bites
  have a final diagnosis of a skin and soft                                                      occurred during the summer months of
  tissue infection like abscess or cellulitis.1                                                  the year.6
  Even in actual cases of spider bites,                                                          Local Toxicity
  the spider will rarely be available for                                                            The stereotypical cutaneous lesion
  definitive identification, so the treating                                                     in Loxosceles bites is characterized by
  physician must be aware at least of the                                                        central necrosis, a middle ring of blanched
  clinical presentation of the two most                                                          skin, and an outer ring of surrounding
  common venomous spiders in North                                                               erythema. This pattern is known as the
  America: those of the genus Loxosceles                                                         “red, white, and blue” lesion and is highly
  and Lactrodectus, frequently referred                               PHOTO BY MICHAEL SIMPSON   suggestive of envenomation. The likely

8 EMRA | emra.org • emresident.org
pathophysiology for this necrosis involves          As mentioned previously, appropriate       Systemic Illness
the cytotoxic effects of sphingomyelinase       identification of an offending spider               In addition to localized necrosis, some
D found in Loxosceles venom.7                   is unlikely to be of much use to ED            patients will develop systemic effects of
     Over the 14 days following the bite        physicians treating patients with possible     Loxosceles envenomation, collectively
(Figure 2), an eschar will develop over the     spider bites. Because the differential for a   referred to as “loxoscelism.” The most
site and then slough off spontaneously.         necrotic wound is large and the diagnosis      well-described elements of loxoscelism
The rate of healing past these first 2 weeks    is often a clinical one, dermatologists and    include fever and chills, nausea and
often depends on the location and size of       entomologists have published a memory          vomiting, arthralgias, intravascular
the wound, but most patients recover from       aid for when to consider a diagnosis other     hemolysis with hemoglobinuria,
the cutaneous effects of envenomation and       than brown recluse spider bite (BRSB):         rhabdomyolysis, disseminated
do not progress to systemic toxicity.           NOT RECLUSE (Table 1).8                        intravascular coagulation (DIC) and
TABLE 1. BSRB — NOT RECLUSE                                                                    acute kidney injury.9 Sphingomyelinase
Numerous           If multiple lesions, consider bites by blood-feeding arthropods             D has also been implicated in systemic
                                                                                               loxoscelism, damaging the erythrocyte
Occurrence         If occurs outside, consider fungal infection or insect bite
                                                                                               cell membrane and recruiting
Timing             Loxosceles bite very unlikely in October and March                          inflammatory mediators leading to a
Red center         If red center, consider cellulitis or insect bite                           systemic inflammatory reaction.10
Elevated           If raised > 1 cm, consider abscess or cellulitis                                 Again due to the difficulty of
Chronic            If persists > 3 months, consider skin cancer                                confirming cases of BRSB, the true
Large              If > 10 cm, consider pyoderma gangrenosum                                   rate of loxoscelism is unknown; while
                                                                                               it appears to be rare in North America,
Ulcerates          If ulcerates in < 7 days, consider pyoderma gangrenosum
                                                                                               the condition is potentially life-
Swelling           If causes swelling below the neck, consider abscess or cellulitis           threatening and can affect otherwise
Exudate            If wound is weeping, consider abscess or purulent cellulitis                healthy individuals,7 so it must be on

FIGURE 1. Brown Recluse Habitats

               deserta

                                    apachea

                 arizonica                                    reclusa

                                       blanda

                                                                        devia

                                                                                                      REPRODUCED WITH PERMISSION OF RICK VETTER

                                                                                                              June/July 2020 | EM Resident 9
TOXICOLOGY
  the differential when appropriate. In           concerning for loxoscelism, including          to the medical ICU and although she
  particular there are reports of children        hematuria, should be admitted to               required a single transfusion of packed
  developing severe systemic loxoscelism          the hospital and closely monitored,            red blood cells during her admission, she
  prior to the appearance of the classic skin     likely in the ICU.14 Severe hemolysis          recovered over the next 5 days and was
  findings.11,12 While there are lab tests that   should be transfused as necessary,             discharged home with wound care for
  can differentiate Loxosceles bites from         and coagulopathy/DIC may need                  her necrotic ulcer. ¬
  the necrotic wounds of several other            to be reversed in the setting of life-
  spider species, these tests are not readily     threatening bleeding. Those experiencing
  available to most ED physicians.13 Instead
                                                                                                  TAKE-HOME POINTS
                                                  rhabdomyolysis, hemoglobinuria, or
  the best way to diagnose loxoscelism is         acute kidney injury require intravenous         ü The diagnosis of BRSB is a clinical
  to be aware of and monitor for the feared       fluid hydration.5 Antivenom is currently               one, as spider identification is
  systemic complications themselves.              not available in the United States, so                 often not possible and definitive
      ED physicians should turn their             treatment is aimed at supportive care of               lab testing is not widely available.
  attention initially toward the airway,          the complications as they arrive.               ü      BRSB are extremely uncommon
  breathing, circulation, and mental
  status of the patient. Once any needed
                                                  Case Conclusion                                        outside of endemic areas.
  resuscitation is complete and the                   In the setting of a necrotic lesion         ü      Using the NOT RECLUSE
  patient is determined to be at risk for         concerning for BRSB, the ED team                       mnemonic, consider a broad
  loxoscelism, relevant labs include serum        identified the dark urine as concerning                differential diagnosis.
  creatinine, hemoglobin/hematocrit,              for hemoglobinuria from loxoscelism.            ü      Systemic loxoscelism is rare
  platelets, Coombs test, prothrombin             Urinalysis was positive for blood,                     but deadly – screen suspected
  time and partial thromboplastin time,           confirming suspicion for hemoglobinuria                patients for hemolysis, rhabdo­
  D-dimer, fibrinogen, and creatine kinase,       and intravascular hemolysis. The                       myolysis, and acute kidney injury.
  with additional testing dictated by the         patient’s hematocrit was 35%, platelets
                                                                                                  ü      As antivenom is unavailable in
  patient’s presentation. Urinalysis is also      were 163,000/mcL, her Coombs test
                                                                                                         the United States, treatment
  indicated, as hematuria is an ominous           was positive, and her creatine kinase,
                                                                                                         for systemic loxoscelism is ICU
  predictor of intravascular hemolysis.           PT, PTT, D dimer, and fibrinogen were
      Patients with diagnostic testing            within normal limits. She was admitted
                                                                                                         admission and supportive care.

     Because
     motorcycles
     will never
     have
     seatbelts.                                                             You’re there for them, we’re here for you.

                                                                                         AC EP AN D EM R A’ S O FFI C I AL O N LI N E C AR EER C EN T E R
                                                                                                  POWERED BY HEALTH ECAREERS

10 EMRA | emra.org • emresident.org
MENTAL HEALTH

          DENIAL
         OF DEATH
The Phenomenon
of Tumor Neglect
        Rebecca Kreston, MD, MSPH                   Little research is available on this       diagnosis and its potential financial
          University of Illinois-Chicago       phenomenon, with only a few isolated            burden may also be contributing factors.
               @thebodyhorrors                 case studies. The incidence is unknown.         Patients seek to maintain control and
               Payal Patel, MD                 Cancers that appear to be most commonly         independence as their deteriorating
          University of Illinois-Chicago
                                               associated with tumor neglect include           health threatens the status quo.3 Those
            Shana Ross, DO, MS
                                               those that are visible to the patient, larger   suffering from tumor neglect do not see
               Assistant Professor,
      Department of Emergency Medicine         than 1 cm, and especially malignancies          their behavior as a form of denial and
    Assistant Director, EM Residency Program   of the skin and breast, though cases of         can feel suspicious of and threatened
           University of Illinois-Chicago      testicular and some solid organ cancers         by the perceived interference of family
                  @ShanaElisha                 have been reported. It is estimated that a      and medical personnel who seek to

A
         56-year-old male with a past          third of women with symptoms of breast          help. Understandably, patients with
         medical history of active tobacco     cancer will delay seeking professional          tumor neglect can inadvertently become
         use and remote intravenous            care by > 3 months.1 A 2018 report details      alienated by their behavior and the
heroin use presents to the ED complaining      a case of a 37-year-old woman with a            presence of a visible malignancy.
of a 2-month history of a rapidly              growing breast lump for 4 months who                Emergency physicians are uniquely
enlarging mass on his right cheek. He          presented to the ED with pain at the site.2     positioned to offer support, as potentially
states the lesion began as a “small pimple”    Imaging confirmed the 16 cm by 13 cm            the first point of contact when a patient
and rapidly expanded. Exam reveals a           fungating mass had metastasized to the          seeks help. Often, the most meaningful
10 cm by 10 cm exophytic and indurated         lung and liver. Shortly after admission, the    impact relates less to immediate
mass protruding from the right face,           patient developed spontaneous tumor lysis       management than referral to a specialist.
extending from the preauricular area           syndrome and died of multiorgan failure.        Establish rapport, try to overcome the
and zygoma to his proximal neck with                Several case studies describe              patient’s distrust of physicians, and
a necrotic and purulent central region.        individuals ignoring their tumors for           eliminate barriers to health care when
CT imaging shows a necrotic infiltrative       months or even decades, resisting the           possible. Preserve the patient’s autonomy
malignant mass of the right cheek with         efforts of family and friends to persuade       by seeking their input on key decisions in
extensive right neck neovascularity and        them to seek medical care.2 Such neglect        their care, while providing an informed
adenopathy at all cervical levels.             can lead to unchecked tumor growth,             perspective on their condition.
    Tumor neglect is a maladaptive             disfigurement, metastasis, and death.2          Case Resolution
response to grossly evident cancers that       Management of such advanced cases                   Our patient was admitted with
are disfiguring and life-threatening. The      depends on several factors and often            oncology and otolaryngology consults.
phenomenon, uncommon and largely               requires a multidisciplinary team that          Biopsies revealed HPV-negative, poorly
unstudied, involves patients ignoring          may include surgeons for resection and          differentiated squamous cell carcinoma
tumors in order to “cope with the              reconstruction in challenging cases.1           of the face. A PET scan demonstrated
obvious, outward and clearly visible signs          The reasons for this unusual               significant metastases to the spine, liver,
of cancer.”1 Denial is a common coping         phenomenon are multifactorial: distrust         and lungs. Three weeks later, the patient
mechanism that grants individuals time         of the health care system, poor medical         underwent resection of the facial mass
to come to terms with stressful situations.    literacy, low socioeconomic status,             with modified radical neck dissection and
However, it has the potential to become        psychosocial stressors, and the tendency        pectoralis flap placement. Three months
pathological, particularly when one’s own      to overlook the hazard of slow-growing          later, he was transitioned to hospice care
health is at stake.                            tumors. A patient’s fear of a formal cancer     and died under unclear circumstances. ¬

References available online                                                                                  June/July 2020 | EM Resident 11
CRITICAL CARE

  Atypical Hemolytic Uremic
          Syndrome
               Peter Brooks, DO                   gluconate, 1 amp sodium bicarbonate,      dialysis was started, the remainder of the
    Carolinas Medical Center Ultrasound Fellow    10 U insulin, 25 g D50, and nebulized     laboratory studies results were:
   Eastern Virginia Medical School EM Residency   albuterol. The QRS immediately narrowed   • BMP: Na 131, K 9.4, Cl 85, CO2 6,
   Martin D. Klinkhammer, MD, MPH, FACEP          on telemetry and on a subsequent ECG          BUN >186, Creatinine 48.3, Glucose
             Assistant Program Director
      Assistant Professor, Emergency Medicine
                                                  (Figure 3) that was obtained.                 117, (Anion gap 39.6)
           Eastern Virginia Medical School            Results of a CBC with manual          • Path review of smear: Moderate

  A
           n 18-year-old African American         differential showed a platelet count of       schistocytes
           female presented to the ED             75 and 2+ RBC fragments. Hemolysis        • Total bilirubin 0.3; LDH 1,328;
           complaining of a 3-week history        labs and DIC screen were ordered. The         haptoglobin < 10. PT; pTT and
  of generalized fatigue, nausea, vomiting,       patient’s repeat BMP was reported as          fibrinogen were within normal limits
  heavy vaginal bleeding, lightheadedness.        hemolyzed once again.                         All are consistent with
                                                      Given the clinical scenario of        microangiopathic hemolytic anemia.
  On the day prior to arrival in the ED,
                                                  anemia with evidence of hemolysis,            The patient was admitted to the
  she developed progressively worsening
                                                  thrombocytopenia, and presumed            medical intensive care unit, where she
  dyspnea with exertion. She had been
                                                  hyperkalemia likely due to acute renal    required endotracheal intubation for
  to several urgent care centers and
                                                  failure, thrombotic microangiopathy was   acute hypoxic respiratory failure. Four
  EDs without receiving a diagnosis.
                                                  considered with differential diagnoses    hours of dialysis were completed with
  She denied any fever, rash, diarrhea,
                                                  including thrombotic thrombocytopenic     transfusion of 2 units of packed RBCs,
  or hematochezia. She denied alcohol,
                                                  purpura, hemolytic uremic syndrome, or    and shortly afterwards PLEX was started.
  cigarettes, or other drug use and was not
                                                  complement-mediated hemolytic uremic      Discussion
  taking any medications. On presentation,
                                                  syndrome. Nephrology and oncology
  her VS were as follows: 98.6 T, 140 HR,                                                        Microangiopathic hemolytic
                                                  were consulted for emergent dialysis
  22 RR, 180/90 mmHg BP, 96% oxygen                                                         anemia (MAHA) is a condition defined
                                                  and plasma exchange therapy (PLEX).
  saturation on room air. The patient                                                       by microvascular hemolysis with
                                                  A bedside istat was drawn showing a
  appeared tired with pale conjunctiva.                                                     anemia and schistocyte formation.
                                                  potassium of 7.5 and immeasurable
  There was no rash or evidence of active                                                   Thrombotic microangiopathy (TMA)
                                                  creatinine. Telemetry showed recurrence
  bleeding. Pelvic exam showed minimal                                                      is a condition characterized by MAHA
                                                  of QRS widening requiring additional
  blood at the cervical os, and rectal exam                                                 and thrombocytopenia due to platelet
                                                  treatment for hyperkalemia, with
  showed normal brown stool in the rectal                                                   activation and consumption. End-organ
                                                  improvement. The decision was made
  vault, which was hemoccult negative.                                                      damage is caused by microvascular
                                                  to place an emergent UDALL catheter
      Initial lab work demonstrated WBC                                                     thrombi and occlusion leading to tissue
                                                  to initiate dialysis and PLEX. After
  23.6, Hb 5.1, HCT 14.9. The platelet count                                                ischemia.1,2
  was indeterminate due to clumping. All                                                         The major types of TMA are shiga
  other labs were marked as hemolyzed.                                                      toxin-mediated hemolytic uremic
  Two units pRBCs were ordered for critical                                                 syndrome (ST-HUS, also known as classic
  anemia. A bedside echo showed no                                                          HUS), complement-mediated TMA (also
  pericardial effusion, no right heart strain,                                              known as atypical HUS or aHUS), and
  and normal ejection fraction. A FAST                                                      thrombotic thrombocytopenic purpura
  exam was negative for intraperitoneal                                                     (TTP). TMA is a hematologic emergency
  fluid. A chest x-ray was obtained                                                         requiring prompt diagnosis and treatment.
  (Figure 1) with a radiology interpretation                                                It should be suspected in any patient
  reporting, “Cardiomegaly with bilateral                                                   with evidence of hemolytic anemia and
  basilar opacities concerning bilateral                                                    thrombocytopenia. The initial treatment
  pneumonia vs pulmonary hemorrhage.”                                                       of TMA includes supportive care,
      An ECG was obtained (Figure 2)                                                        corticosteroids, and antibody removal
  showing a wide-complex rhythm with                                                        with plasma exchange or plasmapheresis.
  peaked T-waves. While awaiting BMP              FIGURE 1. A Chest X-ray Demonstrated      Treatment should be started before
  results, the patient was empirically            Cardiomegaly and Bilateral Basilar        definitive diagnosis is made, which can
  treated for hyperkalemia with 3 g calcium       Opacities                                 take several days.

12 EMRA | emra.org • emresident.org
AIRWAY
Comparing TTP, ST-HUS,                     with PLEX should not be delayed, as 50%       TTP, patients with complement-mediated
complement-mediated TMA                    of deaths from TTP occur in the first 24      TMA are more likely to have severe renal
     TTP is caused by decreased activity   hours.2 In cases where access to PLEX is      dysfunction and pulmonary involvement
of ADAMTS13, most commonly due             delayed, FFP can be started, as it contains   (eg, pulmonary hemorrhage) and are less
to inhibitory autoantibodies against       ADAMTS13, but PLEX has been shown             likely to have severe neurological changes.
ADAMTS13. ADAMTS13 is a protease           to improve survival over FFP infusion         Prognosis of complement-mediated
that cleaves von Willebrand Factor         alone.4 An ADAMTS13 level should be           TMA is highly variable depending on
(vWF) from large multimers to shorter      drawn before the initiation of PLEX or        which complement regulatory protein is
molecules. Normally, endothelial           FFP to avoid a false-negative result.         mutated.6 Eculizumab is a monoclonal
cells produce long chains of vWF, and          ST-HUS is caused by shiga                 antibody used in the treatment for
ADAMTS13 binds to cleavage points and      toxin, commonly produced by                   complement-mediated TMA. Eculizumab
cleaves the long molecules into shorter    enterohemorrhagic Escherichia coli            binds to the complement protein C5 and
fragments. Without ADAMTS13, large         (EHEC) (usually O157:H7) and is               prevents conversion into C5a and C5b,
chains of vWF accumulate in arterioles     associated with diarrhea. It is diagnosed     ultimately preventing the production
and capillaries, subsequently causing      by the identification of the shiga toxin
                                                                                         of membrane attack complex (MAC)
platelets to clump onto vWF, leading to    or EHEC in the stool. Treatment with
                                                                                         and protecting RBCs from intravascular
microangiopathic occlusion causing end-    antibiotics may worsen the disease, and
                                                                                         hemolysis.7,8
organ damage.3 TTP is most commonly        ST-HUS usually resolves with supportive
                                           care such as fluid resuscitation and blood    Conclusion
seen in young women. The classic pentad
                                           transfusion.5                                     In the ICU, our patient underwent
of TTP (found in only 5% of patients)
                                               Complement-mediated TMA is an             daily hemodialysis and PLEX with clinical
is fever, microangiopathic hemolytic
anemia, thrombocytopenia, renal failure,   autoimmune-mediated HUS caused by             and biochemical improvement and was
and neurologic symptoms (FAT RN). The      complement dysregulation. The diagnosis       extubated on hospital day 3. Workup
hallmark of TTP is TMA with a severely     is suspected in any patient with TMA with     revealed an ADAMTS13 antibody activity
reduced ADAMTS13 level of
TOXICOLOGY

                                    Feeling Nervous?
     Recognition and Management
       of Nerve Agent Exposure
             Garrett Cavaliere, DO
       University of Maryland Medical Center
         Emergency Medicine Residency
              Gregory Jasani, MD
       University of Maryland Medical Center
         Emergency Medicine Residency
            Reem AlFalasi, MBChB
       University of Maryland Medical Center
         Emergency Medicine Residency

  A
           patient presents to your urban
           emergency department via EMS
           with shortness of breath, copious
  secretions, nausea, vomiting, and stool
  incontinence. His symptoms began
  abruptly at a concert and progressively
  worsened. During transport, he develops
  signs of increased work of breathing,
  coarse lung sounds, and hypoxia. You
  then receive a box call from the concert
  Incident Command regarding multiple
  casualties en route to your facility with
  similar symptoms. What do you do next?
  Who do you call, what procedures need
  to be initiated?                               (GD), and cyclosarin (GF). They have       agents.2 They add a sulfur group to the
                                                 the designation “G” because they           organophosphates thereby making these
  Introduction                                   were initially synthesized by German       agents less volatile as well as more fat/
      Nerve agents are one of the most           scientists in the early 20th century.2     oil soluble. They act through direct skin
  terrifying weapons of war. With many                                                      contact and persist in the environment
                                                 Originally, tabun was designed as an
  direct pathophysiologic effects, the                                                      for up to several weeks due to their
                                                 organophosphate pesticide. However,
  psychological terror they instill is often                                                hydrophobic nature. The most notable
                                                 its utility as a weapon was quickly
  the intent of their use.1 Often tasteless
                                                 realized and the additional agents were    example is VX which is highly toxic and
  and colorless, they can be dispersed over
                                                 developed. These agents are all liquids    can cause death within a few minutes to
  a wide area to inflict as many casualties
                                                 at room temperature but can easily be      hours.2
  as possible. Although banned from use in
  conventional war, there have increased
                                                 aerosolized by either a dispersal device   Pathophysiology
  concerns that terrorist organizations or       or by an explosive blast. They are all         Nerve agents are very similar
  other non-governmental organizations           soluble in both fat and water, meaning     to organophosphates; they bind to
  may seek to use these weapons anyways.1        they can readily be absorbed through       and inhibit acetylcholinesterase.
  While the United States has fortunately        the eyes, skin, and respiratory tract.     This produces a toxic accumulation
  never seen a nerve agent attack on its soil,   They are all considered non-persistent     of acetylcholine at the peripheral
  the possibility remains high. Emergency        compounds meaning that they evaporate      muscarinic, nicotinic receptors as well
  medicine providers must be able to             quickly.2                                  as the CNS synapses. Additionally, nerve
  recognize and treat victims of nerve agent          The second generation of nerve        agents appear to activate the NMDA
  attacks.                                       agents with the designation “V” are much   receptors in the brain and inhibit GABA
      The 4 most common nerve agents             more stable and potent compared to the     transmission.3
  are tabun (GA), sarin (GB), soman              “G” agents and are considered persistent       Overstimulation of muscarinic

14 EMRA | emra.org • emresident.org
receptors causes miosis, hypersecretion,             SLUDGE: Salivation, Lacrimation,       an event has been identified. All
bronchoconstriction, vomiting, diarrhea,         Urination, Defecation, GI upset, Emesis    emergency notifications to staff and
urinary and fecal incontinence, and                  In addition to atropine, providers     local government agencies should be
bradycardia. Over-activating nicotinic           should also administer Pralidoxime         made. This includes the state health
receptors in the skin cause sweating, and        Chloride (2-PAM chloride).                 department to begin mobilizing
in skeletal muscle, they cause weakness          2-PAM works by reactivating the            resources.7
and flaccid paralysis.3 At CNS cholinergic       acetylcholinesterase by scavenging the         The specific level of personal
receptors, nerve agents produce fatigue,         phosphoryl group and attaching it to       protective equipment (PPE) is dictated
lethargy, amnesia, ataxia, seizures, coma,       the functional hydroxyl group of the       by the type of release and air vapor
and respiratory depression.3                     acetylcholinesterase.4,5 Delays in the     concentrations. At a minimum level,
Symptoms                                         administration of 2-PAM can render it      coveralls, gloves, steel toe, shank boots
                                                 ineffective because of the aging of the    [chemical-resistant], should be used
    The clinical presentation of patients
                                                 agent cholinesterase complex.              if no air involvement.8 It is unrealistic
exposed to nerve agents depends on
                                                                                            to expect ED staff to be trained for
the route and duration of exposure.              TABLE 2. Dosing of 2-PAM for
                                                                                            higher levels of PPE; however, the
Exposure to lower concentrations of              Cholinergic Toxicity
                                                                                            decontamination group should at
vapor leads to relatively mild symptoms
                                                  Route Dose                                minimum be operating in level B PPE
such as miosis, ocular pain and
                                                   IV   30 mg/kg (typically 1-2 g),         (SCBA. Chemical-resistant gloves
rhinorrhea followed by gastrointestinal
                                                          over 15-30 min. Followed by       [double-layered], clothing, steel-toe,
and respiratory symptoms with extended
                                                          4-8 mg/kg/hr IV infusion          and boots) if operating within the
durations of exposure.3
                                                          OR                                hot or warm zone.8 Specific federal
    Exposure to high concentrations                       500 mg/h infusion                 decontamination teams are able to
of vapor induces convulsions, flaccid
                                                    IM    Mild Symptoms: 600 mg x3          be mobilized; however, for the initial
paralysis, loss of consciousness, and
                                                          every 15 minutes                  incident response, decontamination
ultimately respiratory failure. The
                                                          Severe Symptoms: 600 mg           will fall on the local institution and
severity is due to nerve agent vapor being
                                                          in rapid succession not to        local emergency response resources.
easily absorbed in the respiratory tract. It
                                                          exceed 1800 mg total initial          Personal provider safety is
is so potent that it exerts its effects within
                                                          dose.                             paramount! You cannot treat others if
seconds of exposure.3
                                                          For persistent symptoms           you become a casualty!
Treatment                                                 repeat the series of three
                                                                                            Conclusion
    Initial therapy should focus on                       injections 1 hr after the last
                                                          injection                             Nerve agent attacks have the
removing the patient’s clothes and
                                                                                            potential to quickly inflict a high
decontamination to avoid further
                                                     The only class of antiepileptics       number of casualties. As emergency
skin absorption followed by assessing
                                                 effective in the management of             medicine providers, we will be some
the patient’s airway, breathing, and
                                                 seizures induced by nerve agents are       of the first providers to treat victims of
circulation. The priority MUST be
                                                 benzodiazepines. The management of         such an attack. Our ability to recognize
decontamination.7
                                                 status epilepticus due to nerve agent      and properly treat these patients is
    Atropine remains the cornerstone of
                                                 exposure requires higher doses of          paramount to mitigating the damage
cholinergic toxicity treatment since its
                                                 anti-epileptic agents than conventional    from such an event. Of course, providers
mechanism of action works as an
                                                 seizure therapy. Animal studies that       must always be mindful to protect
acetylcholine receptor antagonist. The
                                                 have been extrapolated to humans           themselves first and foremost. ¬
dose of atropine is based on the severity
of symptoms. 4,5                                 estimate that doses as high as 30-40 mg
                                                 of diazepam may be required to break        TAKE-HOME POINTS
TABLE 1. Dosing of Atropine for
                                                 seizures due to nerve agent exposure.1
Cholinergic Toxicity                                                                         ü Symptoms: Salivation,
                                                 Provider Considerations
Symptoms                      Dose                                                             lacrimation, urination,
                                                     Your safety and the safety of
1 Mild                        0.8 mg IM                                                        defecation, GI upset, emesis
                                                 the ED must be the No. 1 priority
Definite SLUDGE               2 mg IM q1hr       during any nerve agent attack. Proper       ü Treatment: Decontamination,
1 or more Mild
                                                 decontamination and disaster planning         Atropine and 2-PAM Chloride
1 mild symptom with
                                                 at a hospital-level must be performed on
no effect in 30 min                                                                          ü Personal safety and
                                                 a regular basis to ensure preparedness
    Be aware that you may have to utilize        for such an event.7                           decontamination are the most
2-3 times this dose in severe poisoning              The ED (and hospital) should              important considerations for
situations (4-6 mg) titrated to decrease in      be immediately locked down with               nerve agent attacks.
symptoms.5                                       controlled entry and exit once

References available online                                                                              June/July 2020 | EM Resident 15
WILDERNESS MEDICINE

                                                            Winter Is Still Coming!
                                                                 Reviewing
                                                                 Accidental
                                                                Hypothermia
      Brendan A. Mulcahy, DO, PHP, PA         include the extremes of age, who have a          Respiratory status may become
       Chief Resident, Emergency Medicine     weakened ability to thermoregulate.          tenuous as the initial tachypnea settles
           Allegheny General Hospital                                                      and eventually leads to respiratory
                                              Clinical Manifestations

 S
         ince the dawn of time, biological                                                 depression as core temperature continues
                                                   Cold exposure can lead to an
         life has been affected by the                                                     to drop. Pulmonary edema and aspiration
                                              incredibly variable clinical presentation.
         extremes of temperature.                                                          pneumonia are common findings in the
                                              As the body temperature begins to
  Militarily, wars have been won and                                                       profoundly hypothermic patient.
                                              decrease — breathing, circulation, and
  lost due to the devastation brought on                                                   Prehospital Management
                                              level of consciousness are affected.
  by hypothermia. Hannibal lost nearly        Below 95°F, patients will begin to               The prehospital management of a
  half his men in the Second Punic            have decreased cognitive function and        suspected hypothermic patient can be
  War. Napoleon’s army was crippled           difficulty with fine motor dexterity.        broken down to careful movement, basic
  in the harsh winter of Russia in 1812.      Hypertension and tachycardia quickly         and advanced life support, passive and
  Arguably the greatest American              progress to cardiac instability with         active rewarming, and transportation to
  generation suffered through the             associated hypotension, bradycardia,         an appropriate center. There is a concept
  infamous European winters of WWII.          and ultimately dysrhythmia. EKG              known as Rescue Collapse, which refers
  Unfortunately, accidental hypothermia       findings can consist of bradycardia,         to the cardiac instability that is caused
  remains a substantial cause of death in     QRS widening, prolonged PR and QT            by the sheer movement of a patient
  our developed nation with nearly 1500       intervals, as well as the classic Osborn     suffering from severe hypothermia. Even
  people dying yearly. In 1999, a Swedish     wave.                                        basic movements can cause ventricular
  physician suffered from one of the lowest                                                disturbance leading to fatal arrhythmia.
                                              FIGURE 1. Osborn Wave
  recorded hypothermia cases, with a core
                                                                                           Emergency Department
  temperature of 13.7°C after 9 hours of
                                                                                           Management
  resuscitation — including initiating of
                                                                                               Determining an accurate core body
  ECMO.
                                                                                           temperature can often be difficult but
  Pathophysiology                                                                          remains paramount in the management
      Accidental hypothermia refers to                                                     of the hypothermic patient. An
  an involuntary drop in the body’s core                                                   esophageal probe is a preferred method
  temperature below 35°C (95°F). As the                                                    in your intubated patients. This is closely
  body cools with cold exposure, there is                                                  followed by the bladder probe. If unable
  a natural response to maintain a normal                                                  to obtain an esophageal or bladder
  core temperature, with involuntary                                                       temperature, then rectal temperature
  shivering and active movement. The                                                       becomes the ideal method. Modified
  ability to regulate temperature and                                                      advanced life support should be initiated
  respond appropriately is multifactorial                                                  as soon as possible, with the first and
  depending on age, exposure, health,                                                      foremost focus remaining on rewarming
  nutrition, medications, and intoxicating                                                 the patient. Pharmacologic interventions,
  substances. In the urban setting, the                                                    such as epinephrine and other vasoactive
  majority of patients presenting with                                                     agents, can be arrhythmogenic while
  accidental hypothermia are the homeless                                                  having little to no effect, and thus should
  and alcoholics. Other at-risk populations                                                generally be avoided. Most arrhythmias

16 EMRA | emra.org • emresident.org
convert spontaneously into normal                 until the temperature is above 30°C.             potassium greater than 12 mmol
sinus rhythm during rewarming.                    Transvenous pacing is considered                 per liter (10 mmol per liter in some
Defibrillation can be attempted if                hazardous for hypothermia-induced                institutions) may be used as a hard stop
necessary but is typically unsuccessful           bradydysrhythmias.                               for whether or not CPR may provide
until the core temperature is above 28-               Serum potassium levels have been             benefit. There is no consensus on how
30°C. If defibrillation is unsuccessful,          a controversial marker of non-survival.          hyperkalemia is best treated in levels
then further attempts should be delayed           Research has suggested that serum                less than 12mmol per liter in the non-
                                                                                                   cardiac arrest patient.
TABLE 1. Staging and Management of Accidental Hypothermia                                          Disposition
                                          Typical Core                                                 The disposition of the patient
Stage       Clinical Symptoms             Temperature      Treatment                               is highly variable depending on the
HT I        Conscious, shivering          32 – 35°C        Warm environment and clothing,          degree of hypothermia and response to
                                                           warm sweet drinks, and active
                                                                                                   therapies administered. Patients who
                                                           movement (if possible)
                                                                                                   are classified as mild to moderate may
HT II       Impaired consciousness,       28 –
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