BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...

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BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
2/18/18

BPPV best
practice:
Understanding,       Janene M. Holmberg, PT, DPT,
                     NCS
applying and         Intermountain Hearing & Balance
                     Center, SLC, UT
advancing the 2017
                     Susan L. Whitney, PT, DPT, FAPTA
Revised OHNS BPPV    Professor in Physical Therapy and
                     Otolaryngology
Clinical Practice    University of Pittsburgh, PA
Guideline

                                                              1
BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
2/18/18

CPG Implementation Survey
We invite you to take part in a
implementation Survey to better
understand how Clinical Practice
Guidelines (CPGs) are used and
how we can improve
implementation.
›Use  the QR code to access the
survey
›Answer at most 14 questions (
BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
2/18/18

Objectives:
 Upon completion of this presentation, the
 learner will be able to:

 ü   Understand key differences in the
     new AAO-HNS 2017 CPG for BPPV
 ü   Understand key action statements
     and implications for clinical practice
      ü Understand the mandate for
        timely referral for BPPV treatment
      ü Understand resources available in
        connection with the new CPG

 Objectives:
ü Discuss the art of BPPV practice
  beyond the narrow definitions of the
  CPG
   ü What “we wished we could have
     said”
ü Discuss clinical applications of the
  CPG
ü Discuss needs for future research
   ü Important role of PT as a key
     professional in shaping the art and
     science of optimal BPPV
     management

                                                   3
BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
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    Benign Paroxysmal Positional Vertigo
                  (BPPV)
}   Dizziness accounts for 5.6
    million clinic visits a year in the
    US with 17-42% BPPV
       } Bhattacharyya N, 2008,
         Hanley, 2001
}   BPPV is the most common
    vestibular disorder across the
    life span and most common
    cause of recurrent vertigo

    Benign Paroxysmal Positional
    Vertigo (BPPV)
     ◦   Lifetime prevalence 2.4 %
         ◦ >60 years old, 7times greater incidence of
            BPPV
         ◦ 86% experience interrupted activities of
            daily living or lost work
         ◦ Only 10% seen by an MD will receive a
            repositioning maneuver

                            Van Beuren, 2007

                                                             4
BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
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                                                         CPG Multi-Disciplinary
                                                         Panel (2017 revision)

Jonathan Edlow, MD        Emergency MD         American Academy of Emergency Medicine (AAEM)
Hussam El-Kashlan, MD     Otolaryngologist     American Otological Society (AOS)
Terry Fife, MD            Neurologist          American Academy of Neurology (AAN)
Janene M. Holmberg,
                          Physical Therapist   American Physical Therapy Association (APTA)
PT, DPT, NCS
Kathryn Mahoney           Consumer Advocate    Vestibular Disorders Association (Consumer Organization)

Deena B. Hollingsworth,
MSN, FNP-BC, CORLN        Nurse                Society of Otorhinolaryngology Head-Neck Nurses (SOHN)

Richard Roberts, PhD
                          Audiologist          American Academy of Audiology (AAA)

Michael D. Seidman,
MD, FACS                  Otolaryngologist     AAO-HNSF Board of Governors (BOG)

Robert Wm. Prasaad
Steiner, MD, PhD          Family Practice MD   American Academy of Family Physicians (AAFP)

Betty Tsai Do, MD
                          Otolaryngologist     AAO-HNSF Otology and Neurotology Education Committee

Courtney C. J. Voelker,                        AAO-HNSF Section for Residents and Fellows/AAO-HNSF
MD, PhD                   Otolaryngologist     Equilibrium Committee

Richard W.
                          Otolaryngologist     AAO-HNSF Physician Payment Policy (3P) Committee
Waguespack, MD

           2017 OHNS BPPV Summary of key changes
                                        (entnet.org website)

   •    Evidence from 2 clinical practice guidelines,
        20 systematic reviews, and 27 randomized
        controlled trials
       •    Enhanced review process to include public comment &
            journal peer review
   •    Increased patient education resources
       •    Plain language edition available
       •    Frequently asked question handout (can be co-branded)
   •    Increased emphasis on patient education/
        shared decision making

                                                                                                               5
BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
2/18/18

                                            BPPV pamphlet –
                                            some of the
                                            questions

                                             › How  common
                                             › What caused
                                               my BPPV
                                             › Can BPPV be
                                               treated
                                             › Can BPPV go
                                               away on its
                                               own?

        2017 OHNS BPPV Summary of key changes
•    Stronger action statements
    •   Use and diagnostic criteria for Dix Hallpike and roll testing
        (history alone is NOT sufficient)
    • Identify specific quality of nystagmus
    • Inclusion of lateral canal BPPV differential diagnosis table
        and description of the maneuvers

•    Continued emphasis of strong recommendation AGAINST…
    • Medications
    • Need/recommendation for further vestibular testing and
       imaging
    • Postmaneuver precautions

                                                                             6
BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
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CRP as initial therapy

› Thereis high-quality evidence
 that patients diagnosed with
 BPPV should be offered
 expeditious treatment with the
 canalith repositioning
 maneuver” (pg. S20)
   › BPPVshould be diagnosed with
    Dix-Hallpike/roll testing

  CRP as initial therapy
   › There is NO evidence.. to suggest
    that any.. medications are effective
    as a primary treatment or as a
    substitute for a repositioning
    maneuver
      › Repositioning   maneuvers are different
          from Cawthorne-Cooksey or Brandt-
          Daroff exercises

                                                       7
BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
2/18/18

                                  CPG Algorithm
› Target   Population: >18 years old

› Purpose:   improve quality of care/outcomes for
 BPPV
     › accurate   and efficient diagnosis of BPPV
     › Reduceinappropriate use of vestibular suppressant
      medications,
     › decrease    the inappropriate use of ancillary testing i.e.
      imaging
     › Increase   use of therapeutic repositioning maneuvers.

                                  CPG Algorithm
› Target    audience:
 ›   All clinicians who are likely to diagnose
     and manage patients with BPPV
 › Any   setting in which BPPV would be
     identified, monitored, or managed

 › NEW  diagnostic and treatment visual
     ALGORITHM

                                                                          8
BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
2/18/18

CPG Algorithm

CPG Algorithm

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BPPV best practice: Understanding, applying and advancing the 2017 Revised OHNS BPPV Clinical Practice Guideline - Academy of ...
2/18/18

    Open Access resources:
           (www.entnet.org/BPPVCPG)
› Fullguideline
› Executive summary
› Podcasts both for otolaryngologists and
  non-otolaryngologists
› Customizable versions of patient handouts
› Plain language summary
› Press release and links to media articles

         Strength of Action Terms
                 Defined
›   Strong Recommendation
    ›   Quality of supporting evidence high (grade A/B or
        level 1-2)
    ›   Clinicians should follow unless clear and
        compelling rationale for alternative
›   Recommendation
    ›   Quality of evidence not as high (grade B/C or
        level 3-4)
    ›   Clinicians should generally follow but remain alert
        to new information
›   Option
    ›   Quality of evidence is suspect (grade D or level 5
        or not well done studies) to show clear advantage
        to one approach versus another

                                                                  10
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                                                         CPG Summary

Statement              Action                                                 Strength

1a.Diagnsosis of       Diagnose posterior semicircular canal BPPV when        Strong
posterior canal        vertigo associated with torsional, up-beating nystagmus recommendation
BPPV                   is provoked by the Dix-Hallpike maneuver
1b. Diagnosis of       Diagnose lateral canal BPPV when history compatible    Recommendation
lateral (horizontal)   with BPPV and diagnostic testing (Dix Hallpike or
canal BPPV             Supine Roll Test) provokes horizontal nystagmus
2a. Differential       Differentiate BPPV from other causes of imbalance,     Recommendation
diagnosis              dizziness and vertigo.
2b. Modifying          Assess for factors that modify management              Recommendation
factors

3a. Radiographic       RADIOGRAPHIC testing should not be obtain in the       Recommendation
testing                absence of additional signs and/or symptoms
                       inconsistent with BPPV

                                                     CPG Summary

3b. Vestibular Vestibular testing should not be obtained                    Recommendation
testing

4a.                Clinicians should treat, or refer to a clinician Strong
Repositioning who can treat, patients with posterior canal                  recommendation
procedures as BPPV with a canalith repositioning
initial therapy procedure.
4b. Post                                                                    Strong
                   Clinicians should not recommend
procedural                                                                  recommendation
                   post-procedural postural restrictions
restrictions                                                                (against)

4c. Observation Clinicians may offer observation with follow Option
as initial         up as initial management for patients with
therapy            BPPV.

                                                                                                    11
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5. Vestibular      The clinician may offer vestibular rehabilitation, Option
rehabilitation     either self-administered or with a clinician, in the
therapy            treatment of BPPV.

6. Medical         Clinicians should not routinely treat BPPV with        Recommendation
therapy            vestibular suppressant medications                     (against)

7a. Outcome        Clinicians should reassess patients within 1           Recommendation
Assessment         month.

7b. Evaluation Clinicians should evaluate or refer to a clinician         Recommendation
of treatment       who can evaluate, patients with persistent
failure

8. Education       Clinicians should educate regarding the impact of Recommendation
                   BPPV on safety, disease recurrence and the
                   importance of follow-up.

                     DIAGNOSIS OF POSTERIOR
                    SEMICIRCULAR CANAL BPPV

          Criteria:
          • Vertigo associated with torsional, up-beating
            nystagmus is provoked by the Dix‑‑Hallpike
            maneuver
          • Performed by bringing patient to supine position
            with the head turned 45 degrees and neck
            extended 20 degrees with the affected ear down

          Strong recommendation based on diagnostic studies with minor limitations
          and a preponderance of benefit over harm.

                                                                                               12
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 Supporting Text

› Historyalone not adequate to make diagnosis
  of BPPV
› Most commonly due to canalithiasis but can be
  cupulolithiasis (>1min duration)

 Supporting Text
 › Negative     DH does not rule out a diagnosis
   of BPPV
 › Care with certain conditions:
   ›   cervical stenosis, limited cervical ROM,
       Down’s syndrome, severe rheumatoid
       arthritis, cervical radiculopathies, Paget’s
       disease, Ankylosing Spondylitis, low back
       dysfunction, spinal cord injury, morbid
       obesity

                                                          13
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         DIAGNOSIS OF LATERAL
      (HORIZONTAL) SEMICIRCULAR
             CANAL BPPV
If the patient has a history compatible with BPPV
and the Dix‑‑Hallpike test exhibits horizontal or
no nystagmus, the clinician should perform, or
refer to a clinician who can perform a supine
roll test to assess for lateral semicircular canal
BPPV

Recommendation based on diagnostic studies with
limitations and a preponderance of benefit over harm

Supporting Text

 › Second  most common form of BPPV
 › Can be seen with canal conversion
   during a posterior canal repositioning
 › Description of 2 forms of lateral canal
   BPPV (geotropic vs apogeotropic)
 › Valuable chart is included on selected
   methods for identifying the affected ear

                                                           14
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  Determining Affected Side

   DIFFERENTIAL DIAGNOSIS

Clinicians should differentiate, or refer to a
clinician who can differentiate, BPPV from
other causes of imbalance, dizziness and
vertigo
Recommendation

Benefits: Prevent false positive diagnosis of
BPPV when another condition actually exists

                                                     15
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 Supporting Text
›BPPV     is often under or misdiagnosed

›Nice  section in the guidelines for
 differential diagnosis of dizziness

 Supporting Text
  › Centralvs peripheral section about
   differential diagnosis

  › The   CPG also suggests that you consider:
   ›   Panic/anxiety
   ›   Cervical
   ›   Orthostatic hypotension
   ›   medications

                                                     16
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                     MODIFYING FACTORS

Clinicians should assess patients with BPPV for factors that
modify management including:

•    impaired mobility or balance
•    central nervous system disorders
•    a lack of home support
•    increased risk for falling

Recommendation based on observational and cross-
sectional studies and a preponderance of benefit over
harm.

     Supporting Text
    › High   incidence of medical comorbidities
     ›   Diabetes, anxiety, head trauma, migraine,
         peripheral neuropathy, CNS disorder
    › Need     for falls screening and/or assessment
         › Have   you had 2 or more falls in past year
         ›   Do you feel unsteady when standing/walking
         ›   Do you worry about falling
    › Cautionto not miss BPPV when other co-
     morbidity is prominent, e.g. Multiple sclerosis,
     Parkinson's disease, concussion, migraine

                                                                   17
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          RADIOGRAPHIC TESTING
Clinicians should not obtain radiographic
imaging in a patient who meets
diagnostic criteria for BPPV in the absence
of additional signs and/or symptoms
inconsistent with BPPV that warrant
imaging.

Recommendation against radiographic
imaging

 Supporting Text
 › Retrospective   review of 2,374 elderly
   patients with MRI failed to detect any
   significant differences between persons
   with and without dizziness
     › Grill   E et al, 2014

 › Radiographic   imaging is indicated in
   patients with additional neurologic
   symptoms atypical for BPPV

                                                  18
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Opinion Only
 ›I have seen patients in the hospital for BPPV in the
   morning. They had fully cleared (no symptoms and
   a negative Dix Hallpike and roll test) after the
   repositioning
 › The resident wants them scanned prior to leaving
 › Their BPPV can return from lying flat in the scanner

 VESTIBULAR TESTING

Clinicians should NOT order vestibular testing
in a patient who meets diagnostic criteria for
BPPV in the absence of additional vestibular
signs and/or symptoms inconsistent with BPPV
that warrant testing

Recommendation against vestibular testing
based on diagnostic studies with limitations
and a preponderance of benefit over harm.

                                                              19
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Supporting Text
› Defined      vestibular function tests
  ›   Comprehensive video
      electronystagmography, rotary chair test,
      vestibular evoked myogenic potenials,
      computerized Posturography,
      computerized Head Impulse Testing
› Indications      for testing
  ›   Suspect comorbid vestibular hypofunction
  ›   Atypical nystagmus
  ›   Failed response to repositioning
  ›   Frequent reoccurrences

Supporting Text
› Diagnosiscan be made without
 specialized equipment
  ›   “This does not imply that use of video-
      oculographic technology.. Should not be
      used when available”
      › The  goggles help in BPPV identification and
        differentiation
› Unclear or atypical nystagmus may be
 seen in up to 13% of persons seen
      › Bath   AP et al, 2000

                                                           20
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REPOSITIONING PROCEDURES AS INITIAL
THERAPYINITIAL THERAPY

 Clinicians should treat, or refer to a
 clinician who can treat, patients with
 posterior canal BPPV with a canalith
 repositioning procedure.

 Strong recommendation based on
 systematic reviews of randomized
 controlled trials and a preponderance of
 benefit over harm

  Supporting Text
   ›Single  canalith repositioning
     maneuver is >10 times more effective
     than 3 times a week Brandt Daroff
     exercises (Hilton MP et al, 2014)

   ›Success   at 80.5% with the canalith
     repositioning maneuver vs 25%
     success with the Brandt Daroff
     exercise (Amor-Dorado JC 2012)

                                                21
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Supporting Text

› High variability in the number of times the
 canalith repositioning maneuver is applied
 for the initial intervention
 ›   Benefit of multiple repositioning maneuvers in
     persons who are not fully cleared (Gordon
     and Gadoth, 2004; Reinink H et al 2014)

Supporting Text
 ›2  major treatments for the posterior canal
   are the modified Epley and the Semont
   (Liberatory maneuver)
 › Lateral canal BPPV
     ›   Evidence is mounting for the repositioning
         maneuvers
     ›   Determining the side of the horizontal canal
         BPPV and confusion in names of the
         maneuvers in literature is a problem

                                                            22
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Biomechanical
physics of BPPV
(Rabbitt)

                      23
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            DIX-HALLPIKE TESTING

       BPPV is caused by
 displaced otoconia from the          Only one way
utricle most commonly into the
         posterior canal                   OUT

                                          Hillman & McLaren, 1979

                 Canalith Repositioning Treatments or Epley
                                Maneuvers

                                                                        24
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                  › Biomechanics
                    of canalith
                    repositioning
                    maneuver
                  › R. Rabbitt

    Canalith Repositioning
Treatment or Epley Maneuver

                                        25
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  Changing Maneuver Based on
  Quality of Eye movement

 Supporting Text.
› Horizontalcanal BPPV: geotropic/apogeotropic
› Increased spontaneous recovery rates
› Maneuvers discussed in the CPG
  ›   Lempert 360 roll
  ›   Gufoni for geotropic lateral canal BPPV
      › Success   ranges 50-100% (Cassani 2011; Kim et al 2012)

                                                                      26
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Supporting Text.

›   Gufoni for apogeotropic lateral canal BPPV
    › Success   rates are 62-73% (Kim JS 2012),
›   Forced Prolonged Positioning
    › Success ranges 75-90% (Casani 2002; Chiou W-Y 2005;
      Appiani GC 2005)
›   Self Administered modified Epley and Semont
    › Success   64% vs 23% for Brandt Daroff (Radtke et al
      1999)

Lempert Maneuver

                                                                 27
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         Gufoni for geotropic type of benign paroxysmal positional vertigo involving
                         the horizontal canal (HC) (left affected ear)

Randomized clinical trial for geotropic horizontal canal benign paroxysmal positional vertigo.
Kim, Ji; Oh, Sun-Young; Lee, Seung-Han; Kang, Ji; Kim, Dong; Jeong, Seong-Hae; Choi, Kwang-Dong; Moon, In; Kim,
Byung; Kim, Hyo

Neurology. 79(7):700-707, August 14, 2012.
DOI: 10.1212/WNL.0b013e3182648b8b
                                                                                                    2

   Geotropic Right Lateral
   Canal
               •   Forced Prolonged Positioning
                   (Vannuchhi et al, 1997) –
                   • Shown for geotropic right LC-BPPV.
                   • Geotropic –Lie down on back. Roll
                     towards involved side. Sleep on
                     uninvolved side.

                                                                                                                      28
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  Apogeotropic Right Lateral
  Canal
   •   Forced Prolonged Positioning
       (Vannuchhi et al, 1997)
       Apogeotropic – Lie down on
       back. Roll towards uninvolved
       side. Sleep on involved side.

POST-PROCEDURAL RESTRICTIONS

Clinicians should not recommend post‑‑
procedural postural restrictions after canalith
repositioning procedure for posterior canal
BPPV.

Strong recommendation against restrictions
based on randomized controlled trials with
minor limitations and a preponderance of
benefit over harm.

                                                      29
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OBSERVATION AS INITIAL THERAPY

Clinicians may offer observation with follow up as
initial management for patients with BPPV.

Option based on data from cohort and observational
studies with heterogeneity and a relative balance of
benefits and harms.

  Supporting Text
   › We   don’t like this statement
       › Frustrating  given the level of success with the
          repositionings and the potential RISK
   › Medical   option when disease is self
     limiting and/or when likely benign
       › Spontaneous    rates 27-38% (Hilton, 2014)
   › Usually   no serious adverse effects
       › Nausea,    cervical spine pain, headache
       › Listed   contra indications

                                                                30
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Supporting Text
› No consensus on length of “observation”
› Panel favored CRP in subsets of patients
  ›   High risk for falls
  ›   More disabling symptoms
  ›   More distraught/anxious (PPPD not named
      yet)
› Observation may be more of option in
  Primary care settings

Supporting Text
› Risksof observing, patients should be
  informed..
  ›   Possibility of longer duration of symptoms
  ›   WANTED TO ALSO SAY:
      › Fall   risk
      › Death
      › Disability
      › Poorerquality of life
      › Triggering
                 event for persistent postural and
        perceptual dizziness (PPPD)

                                                         31
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  VESTIBULAR REHABILITATION

The clinician may offer vestibular rehabilitation
in the treatment of BPPV.

Option based on controlled observational studies
and a balance of benefit and harm.

   Supporting Text
     › There   are physicians using Cawthorne
       Cooksey/Brandt Daroff (BD) for BPPV
     › Vestibular rehab is significantly less
       effective as first-line treatment
     › Indicated for patients
      › Persistent disability following
         repositioning (refractory and/or high
         recurrence)
      › Refuse the repositioning
      › Not candidate for the repositioning or it
         is too difficult to perform the maneuvers
      › Comorbid modifying factors

                                                         32
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Supporting Text
› Insome cases, vestibular rehab is necessary
  optimize resolution of disability
    › Clear residual complaints (dizziness/
      balance)
    › Improved gait stability
    › Decrease fall risk
    › Secondary assessment to further
      differential diagnosis
      › Comorbid hypofunction, modifying
        factors for recovery

Supporting Text
› Clarification on Customized vestibular
  rehabilitation vs generic
       › Potential to improve outcomes
       › Role of better education and more tailored
         exercise (Hall et al, 2016)

                                                          33
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              MEDICAL THERAPY

Clinicians should not routinely treat BPPV with
vestibular suppressant medications such as
antihistamines and/or benzodiazepines.

Recommendation against routine medication
based on observational studies and a
preponderance of benefit over harm.

    Supporting Text
   › Review of pharmacologic
     management with vestibular
     suppressant medications
   › Benefit
       ›Reduce   spinning
       ›Reduce accompanying motion
        sickness

                                                      34
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Supporting Text: Harm
  ›   Drowsiness, cognitive deficits, GI motility,
      vision
      › Especially   polypharmacy effects in elderly
  ›   Independent risk factor for falls
  ›   Interference with central compensation for
      vestibular insult
  ›   Obscure diagnostic findings
      › Evidencethat BPPV, especially torsional,
        nystagmus is not suppressed well with
        common vestibular suppressants

Supporting Text
› Data   continues to strongly reinforce superiority
  of active treatment (repositioning) for BPPV
  rather then medication
› Some benefit as adjunctive in select patients
  › Minimizing discomfort during CRP
     › Prophylaxis for severe nausea and/or
       vomiting
  › Treating psychological anxiety secondary to
    BPPV

                                                           35
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   Supporting Text
   › Power   statement
     › “There is no evidence in the literature to
       suggest that any of these vestibular
       suppressant medication are effective as
       a definitive, primary treatment for BPPV
       or effective as a substitute for
       repositioning maneuvers.”
       › p.30   of the CPG

           OUTCOME ASSESSMENT
Clinicians should reassess patients within 1
month after an initial period of observation or
treatment to document resolution or
persistence of symptoms.

Recommendation based on observational
outcomes studies and expert opinion and a
preponderance of benefit over harm.

                                                        36
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Supporting Text
›Stressed          variable responses to
  CRP
   ›Accuracy of initial diagnosis
   ›Comorbidities/modifying
    factors

Supporting Text
› Treatment   failures defined as >2-5 canalith
  repositioning sessions
› Definition of treatment success
  ›   Subjective symptom resolution and/or
      conversion to a negative Dix Hallpike
  ›   If symptom-based assessment used
      › Detailed
               to differentiate decreased/minimized
        symptoms due to AVOIDANCE from true
        symptom resolution

                                                          37
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  Supporting statement
   › Responseto treatment, optimal recovery
    and any residual symptoms need to be
    assessed
      › Ifurgent care initial treatment, the primary
        care physician is suitable to reassess
      › Time frame within 1 month
      › Rationale
        ›    Safety with initial diagnosis
        ›    Reduce quality of life impact of unresolved BPPV
        ›    Especially as care shifts from the emergency
             department/primary care physician rather than
             subspecialty

 EVALUATION OF TREATMENT FAILURE

Clinicians should evaluate, or refer to a
clinician who can evaluate, patients with
persistent symptoms for unresolved BPPV
and/or underlying peripheral vestibular or
central nervous system disorders.

 Recommendation based on observational
studies of diagnostic outcomes in patients
with BPPV and a preponderance of benefit
over harm.

                                                                    38
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Supporting Text
› Need    to expeditiously identify treatment
  failures
     › Failure rates of single-session repositioning
       8-50%
› Rationale
  › Persistent BPPV may be responsive to further
    repositionings and/or vestibular
    rehabilitation
       › Success up to 90-98% with additional
         repositionings
       › Canalith respositionings are the initial
         treatment of choice for initial failures

Supporting Text
   ›   Coexisting vestibular condition may be
       present
   ›   Serious central nervous system disorder may
       simulate BPPV and need to be identified
        ›   Case of paroxysmal positional nystagmus as first
            sign of paraneoplastic syndrome
        ›   Atypical refractory to care cases need to be
            questioned for central nervous system disease
   ›   Apogeotropic may be more refractory
       › Cupulolithiasis   in general takes longer to get
         better

                                                                   39
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Supporting Text
› Factors   associated with treatment failure
    › Secondary  BPPV, e.g. head trauma, neuritis, &
      Menieres
    › Migraine
    › Complicating comorbiities e.g. Peripheral
      Neuropathy
    › Biomechanical limitations to optimal positioning
      e.g severe kyphoscoliosis
    › BPPV associated with subclinical, underlying
      impaired vestibular function

                                    Pollak L et al (2002)

Supporting Text
   › Transient vestibular dysfunction (“vestibular
    hangover”) can occur (1-3 months) with BPPV even
    following successful repositionings especially in elderly
    › Need to identify these people and start vestibular
      rehabilitation
    › Improve balance, minimize fall risk, and decrease
      fear of falling (impaired balance confidence)

          Black FO (1984), Blatt P (2000),
    Giacomini PG (2002), Chang W-C (2006)

                                                                    40
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                      EDUCATION

Clinicians should educate patients regarding
the impact of BPPV on their safety, the
potential for disease recurrence and the
importance of follow‑‑up.

Recommendation based on observational
studies of diagnostic outcomes and
recurrence in patients with BPPV and a
preponderance of benefit over harm.

  Supporting Text
  › Expanded      and more detailed with hand out
      › Embracing    advancing evidence of our treatment
       efficacy
       ›   Education, reducing threat, and giving locus of
           control
      › What   we as PT can do SO well
  › Goals   of any Education
      › Reassurance
       ›   Not serious
       ›   Clinicians experience with disorder and treating
       ›   Normalize experience (understandable frightening
           and not so BENIGN)

                                                                  41
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Supporting Text
› Remove    threat
 › Great   potential to heal
  › High success rates
› Patient empowerment
  › Understanding BPPV pathophysiology and rationale
    for success
  › Capacity and role of remaining active/moving again
› Optimize Patient Acute and Long term management
  › Recurrence rates 36% (Hilton, 2014)
  › Need for early recognition
  › Greater risk for falls especially with the elderly
  › Importance of follow-up

                           What We wish
                           we could
                           say….
                           Implications from
                           biomechanical modeling,
                           clinical practice, and non-
                           randomized studies

                                                             42
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What do we wish we could
have said….
› Observation      is NOT an option
 ›   Harm outweighing Benefit
› Stronger   lateral canal treatment statements
› Possibility some patients may need post maneuver
  precautions/long term restrictions
› Art of maneuvers
 ›   Number of repetitions
 ›   Statements about cupulolithiasis vs canalithiasis
 ›   ID critical components of maneuvers
     › Rationale   and success rates of various maneuvers
     › Uniqueness   of individual/customization
 ›   Skilled vs “Youtube-Rx” maneuver

Applying
Mathematical models
                           ›   Posterior canal “Epley”
                               ›   Matches ideally with
                                   biomechanical model
                           ›   Lateral canal
                               ›   Modeling supports 270 degree
                                   roll (involved side to nose down)
                           ›   Can we get rid of any need to
                               think we need to roll prone??
                               ›   Anecdotal conversions
                                   ›   Epley, avoid initial position
                               ›   Research Support
                                   › Gufoni maneuver success
                                   › Forced Prolonged Positioning
                                   › Kim Cupulolith Maneuver

                                                 2008

                                                                           43
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                    Cupulolith
                    Repositioning
                    Maneuver: Apogeotropic,
                    Right LC-BPPV.
    Goal:           Kim, Jo, Chung, Byeon, and
                    Lee, 2011-

                    ›   Moves debris
                        ›       long arm(1st)
                        ›       off utricular (4th)
                    ›   Each position 3
                        min
                    ›   Vibration 1wth
                        and 4th
                    ›    Sleep
                        uninvolved
                    ›   97% success
                        after 2
                        maneuvers

1               2           3

            5

4                       6

                                                          44
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Analyzing Gans Maneuver?
Hybrid liberatory/canalith

›   Number of articles
    noted success
    ›   increased conversion
        rates to Lateral canal
›   IF in Initial position the
    debris is far enough
    into the canal
    ›   Models stress initial
        position as critical
›   Rolling could
    successfully reposition

                                         GANs Maneuver

                          ›     “Liberatory” maneuver does not
                                hold up to anatomic scrutiny
                                ›   Liberation could happen from the
                                    utricular side but would not cause
                                    “Nystagmus burst”
                                ›   Manuever could force a
                                    “secondary burst”

                                                                             45
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Predicting a successful treatment
in posterior BPPV
Oh HJ et al Neurology 2007 10; 68(15): 1219-22

› Important  to monitor the nystagmus
   during CRT
      ›78%     have a secondary Burst (SB)
      ›12%     reversal SB, 10% no SB
      ›80%    of BPPV w/reversal and 67% of no
        SB failed to resolve

› 100%    of BPPV with orthotropic SB
   resolved 1-2 trials
      ›predictive       of success

   Initial Head Position IMPORTANCE
       Use of sloping or Trendelenberg bed

                                                     46
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Clinical Practice: Qualtifying
disability beyond “otoliths”
› Refractory      BPPV associated with
  Meniere’s
    › Balatsouras    DG et al 2012
› Central and psychogenic/
  functional contributors
    › Faralli   M et al 2014
› Triggering
           of Persistent Postural and
  Perceptual Dizziness (PPPD)

Clinical Practice: Post
maneuver Precautions
Devaiah, 2010 Meta analysis

  › Do  the studies answer??
  › Frog otoconia stick in 5 min (Otsuka K
    et al 2010) & randomized controlled
    studies show no difference
    ›But do BPPV need to be “taught”
      to avoid has the study been done
      that asks the right question? (This
      does not make sense to me

                                                 47
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    BPPV Recurrences and
    Education…
›   With Initial presentation is it correct…
       ›   “BPPV is highly recurrent, and likely you are going to
           have this for the rest of your life”
›   Clinical belief that not everyone has the same
    BPPV recurrence odds
       ›   Overall 36% recurrence with up to 47% (Hain TC
           2000)
›   Schruknecht original theory BPPV is in thirds…
       › 1/3: Benign self limiting, highly responsive (isolated
         across lifetime)???
       › 2/3: Increased vulnerability (happens increased
         risk)???
       › 3/3: Refractory/difficult cases
            ›   BPPV: Clinical and Oculographic features in 240 cases; Baloh,
                1987
›    Could we research and further define…

Anterior Canal BPPV???
    Initial findings…                          Discharge…

                                                                                    48
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    What about Anterior canal….
    Edited out in review process
     ›   Although there is growing evidence of the
         existence, definability and treatment
         effectiveness of anterior canal BPPV
     ›   Controversy
         ›   Complexity of the diagnosis
         ›   Differentiate from central nervous system
             involvement
     ›   Anagnostou 2015 Systematic Review concluded:
         ›   Anterior canal BPPV can be treated safely
         ›   Epley or other maneuvers
         ›   Symptom resolution rates comparable
     ›   More multicenter controlled trials are needed to
         make evidence-based recommendations.

Advance Practice with Anterior
Canal BPPV …
›   Need highly skilled clinicians
    ›   Vestibular specialization
›   Well controlled research
      › CNS disease
      › False positives from
         opposite side PC BPPV
      › Inferior Neuritis
             › generatetorsional down
              beating nystagmus
        › Benign Downbeat
          Nystagmus of Aging
        › Spontaneous
          Inversion/Reversal
             › Neurologicdischarge
              from severe PC Rx

                                                                49
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Repetitions of Maneuvers???
Perform until evidence of clearing, no standard in research

› Epley used multiple repositioning's until
  nystagmus cleared

› Superior results with repeated repositionings in
  one session
    ›Gordon and Gadoth 2004; Korn et al 2007

› Variation in clinic
  › 1-3 repositionings/session
  › Ideal setting: repeat test in       30 minutes and
     finish with CRT
       › usually   2 per session, at most 3 per session

    Case Study: How Many
    Repetitions should you do??
Initial sidelying testing            Initial Treatment

                                                                  50
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Retest/2nd CRP

Retesting/Teaching home
augmentative self CRT
                 Final treatment

                                       51
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                               Key points on
                               differential
                               diagnosis
                               Benign vestibulopathy
                               Migraine

 Differentiating other benign
 vestibulopathy…
› 72y.o with history of recurrent Right Posterior
  Canal BPPV
› Return symptoms last 2 weeks
  ›   Onset associated with tripping and falling
  ›   Unsuccessful self Canalith Repositioning attempts
› Central screens/testing NORMAL
› Computerized Head Impulse testing NORMAL
› 3 beats Left Beating after head shake Nystagmus
› Right Dix Hallpike atypical persistent Right Beating
  nystagmus

                                                              52
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     Initial Exam: Left sidelying and
     right roll

            Benign Vestibulopathy NOT
                      BPPV
›   Proposed etiology: “Light Cupula”
        ›   Kim, 2014 Med Hypothesis; T. Imai, 2014 BMJ
›   Change in density of the endolymph due to inner ear
    hypoperfusion
    ›   Trauma from microcirculation/compromise
    ›   Infection disrupts blood-labyrinth barrier increased
        proteins in inner ear
    ›   Seen with sudden sensory neural hearing loss
›   Incidence
    ›    4.9% patient’s diagnosed with BPPV
    ›   14% patient’s with geotropic direction changing
        positional nystagmus
        ›   Kim CH et al, Laryngoscope, 2014
›   CONSIDERED: “Self-limiting benign condition”

                                                                   53
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  Light Cupula Criteria
  Kim CH 2014
› Persistent     Geotropic horizontal DCPN
  ›   No latency (no paroxysmal quality) on Roll testing
  ›   Presence of Null plane: 15-40 degrees affected side
  ›   Lean (supine): Horizontal nystagmus beating away
      from affected side
  ›   Bow (prone): Horizontal Nystagmus reverses beating
      toward the affected side
  ›   Spontaneous nystagmus: beating away
  ›   Other causes ruled out: Central, Unilateral
      peripheral hypofunction

            Clinical characteristics of light cupula vs
                 Lateral Canal Geotropic BPPV
      (Schubert MC et al 2017, Adapted from Kim CH et al, 2014)

                                Light Cupula   BPPV: Canalithiasis

  Geotropic Nystagmus (GN)          YES               YES

  Persistent                        YES               NO

  Prone reversal of GN              YES          Transient/NO

  Fatigability                      NO              YES/NO

  Null plane                        YES             YES/NO

  Latency                           NO                YES

                                                                         54
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    Management & Outcome
›   Suspect for benign, self
    limiting acute vestibular
    crisis
      › Fit criteria for Right
        “Light Cupula”
      › DOESN’T fit criteria for
        lateral canal BPPV
›   Educated
›   Taught VORx1
    adaptation
›   Returned in a week
›   Nystagmus resolved and
    symptom free

    Migraine and Positional
    Nystagmus/Dizziness
                                   ›   Common
                                       ›   3.2 vs 2.4 lifetime
                                           prevalence
                                               ›   Lempert (2009)
                                   ›   Atypical
                                       ›   BPPV or Acute
                                           Unilateral loss
                                   ›   Migraine
                                       ›   Hx
                                       ›   Features
                                           › Light, sound
                                           › Nausea
                                           › Triggers
                                           › ?headache

                                                                        55
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Potential for self limiting
resolve

Comorbidity with definable
BPPV

                                  56
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                                Future
                                Research
                                Needs

 Research needs
› Diagnosticand cost effective studies to ID
 subset of patients
    › Require   additional vestibular testing and/or
      radiographic testing
    › Skilled intervention vs self CRT

› Determine  if CPG changes physician/clinician
  behaviors
› Perform studies on accuracy of diagnosis and
  treatment of BPPV in non-specialty settings

                                                           57
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 Research Needs
 ›    Cost effectiveness for potential advantages for
      earlier intervention
          › Can we take out “observation” as KAS option
          › Define the subset where observation is HARMFUL

 ›    Further epidemiologic studies
      ›   Rates of falls with BPPV as underlying cause/
          diagnosis
      ›   Risk factors associated with development of BPPV
      ›   Extended cohort studies on measures associated
          with decreased recurrence

 Research needs
› More  Studies concerning confirming presence
  and treatment efficacy for Anterior Canal
  BPPV
› More studies on treatment clarification and
  success rates for Lateral canal BPPV
  ›   Clarify and standardize the terms use to describe
      repositioning maneuvers of lateral canal
› Studieson functional impact of BPPV on home
 safety, work safety, absences, and driving risks
  ›   Develop/validate disease-specific QOL measure
      for BPPV

                                                                 58
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Research Needs
› Refine    the “Art of BPPV” treatment
  ›    Determine optimal # of CRPs, time interval
       › When  might multiple repetitions of maneuver
         contraindicated
  ›    ID patient and treatment specific risk factors for
       recalcitrant BPPV
  ›    Investigate role/need of addition VR beyond
       isolated CRP
  ›    Better Differentiate positional nystagmus/
       vertigo that is NOT BPPV
  ›    When is post maneuver precautions and long
       term restrictions indicated

Summary
› BPPV
     2017 Revised CPG is a powerful
 document
 ›    Advocates for treatment
 ›    Advances differential diagnosis across multiple
      disciplines and treatment settings
 ›    Grounds us in state of scientific evidence
 ›    Calls for us to further advance practice
› PT
   has great potential to advance
 particularly the “Art of BPPV” practice

                                                                59
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Questions??

                  60
BPPV best practice: understanding, applying, and advancing the
                      2017 Revised Clinical Practice guideline

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PATIENT INFORMATION

                                                               Frequently Asked Questions:
                                                              Benign Paroxysmal Positional Vertigo (BPPV)

    QUESTION                                                   ANSWER
    What is BPPV?                                              Benign Paroxysmal Positional Vertigo (BPPV) is the most common inner ear
                                                               problem and cause of vertigo, or false sense of spinning.
                                                               BPPV is a specific diagnosis and each word describes the condition:
                                                               Benign: it is not life-threatening, even though the symptoms can be very intense
                                                                and upsetting
                                                               Paroxysmal (par-ek-siz-muhl): it comes in sudden, short spells
                                                               Positional: certain head positions or movements can trigger a spell
                                                               Vertigo: feeling like you are spinning or the world around you is spinning1

    What causes BPPV?                                          There are crystals of calcium carbonate that are a normal part of our inner ear
                                                               and help us with our balance and body motion. These tiny rocklike crystals or
                                                               “otoconia” (oh-toe-cone-ee-uh) are settled in the center “pouch” of the inner
                                                               ear. BPPV is caused by the crystals becoming “unglued” from their normal
                                                               place. They begin to float around and/or get stuck on sensors in the wrong part
                                                               or wrong canal of the inner ear. The most intense part of your BPPV symptoms
                                                               have to do with how long it takes the crystals or sensor to settle after you move
                                                               or change your head or body position. As the crystals move and settle, your
                                                               brain is getting powerful (false) messages telling you that you are violently
                                                               spinning when all you may have done is laid down or rolled over in bed.

    What are the common symptoms                              Everyone will experience BPPV differently, but there are common symptoms.
    and how can BPPV affect me?                               The most common symptoms are distinct triggered spells of vertigo or spinning
                                                              sensations. You may experience nausea (sometimes vomiting) and/or a severe
                                                              sense of disorientation in space. You may also feel unstable or like you are
                                                              losing your balance. These symptoms will be intense for seconds to minutes.
                                                              You can have lasting feelings of dizziness and instability, but at a lesser level,
                                                              once the episode has passed. In some people, especially seniors, BPPV can
                                                              appear as an isolated sense of instability brought on by position change
                                                              like sitting up, looking up, bending over and reaching. BPPV does not cause
                                                              constant severe dizziness and is usually triggered by movement. BPPV does
                                                              not affect your hearing or cause you to faint. The natural course of BPPV is to
                                                              become less severe over time. People will often report that their very first BPPV
                                                              spinning episode was the worst and the following episodes were not as bad.
1
    Adapted from Woodhouse, S. “Benign Paroxysmal Positional Vertigo (BPPV)”. (n.d., para. 1). Retrieved from
    https://vestibular.org/understanding-vestibular-disorders/types-vestibular-disorders/benign-paroxysmal-positional-vertigo
                                                              SOURCE: Bhattacharyya N, Gubbels SP, Schwartz SR, et al; Clinical Practice Guideline: Benign
                                                              Paroxysmal Positional Vertigo (Update). Otolaryngol Head Neck Surg. 2017; 156(3_suppl):s1-s47.

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