Prevention of Drowning - American Academy of Pediatrics
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TECHNICAL REPORT Prevention of Drowning Sarah A. Denny, MD, FAAP,a Linda Quan, MD, FAAP,b Julie Gilchrist, MD, FAAP,c Tracy McCallin, MD, FAAP,d,e Rohit Shenoi, MD, FAAP,f Shabana Yusuf, MD, Med, FAAP,f Jeffrey Weiss, MD, FAAP,g,h Benjamin Hoffman, MD, FAAP,i COUNCIL ON INJURY, VIOLENCE, AND POISON PREVENTION Drowning is a leading cause of injury-related death in children. In 2018, abstract almost 900 US children younger than 20 years died of drowning. A a Nationwide Children’s Hospital and College of Medicine, The Ohio State number of strategies are available to prevent these tragedies. As University, Columbus, Ohio; bPediatric Emergency Medicine, Seattle Children's Hospital, University of Washington School of Medicine, educators and advocates, pediatricians can play an important role in Seattle, Washington; cUS Public Health Service (Retired); dChildren’s prevention of drowning. Hospital of San Antonio, San Antonio, Texas; eBaylor College of Medicine, Houston, Texas; fSection of Emergency Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas; gPhoenix Children's Hospital Medicine, Phoenix Children's Hospital, Phoenix, Arizona; hUniversity of Arizona College of Medicine-Phoenix, Phoenix, INTRODUCTION Arizona; and iDoernbecher Children’s Hospital and Oregon Health and Science University, Portland, Oregon Background This document is copyrighted and is property of the American Drowning is the leading cause of unintentional injury–related death in Academy of Pediatrics and its Board of Directors. All authors have filed conflict of interest statements with the American Academy of US children 1 through 4 years of age and, as of 2018, has surpassed Pediatrics. Any conflicts have been resolved through a process birth defects as the most common cause of death among this age group. approved by the Board of Directors. The American Academy of Pediatrics has neither solicited nor accepted any commercial Drowning is the third leading cause of unintentional injury–related involvement in the development of the content of this publication. death among US children and adolescents 5 through 19 years of age.1 Technical reports from the American Academy of Pediatrics In 2018, almost 900 US children and youth under 20 years died of benefit from expertise and resources of liaisons and internal (AAP) and external reviewers. However, technical reports from the drowning and more than 7200 were seen at a hospital emergency American Academy of Pediatrics may not reflect the views of the department (ED) for a drowning event, with 35% of those children liaisons or the organizations or government agencies that they represent. either hospitalized or transferred for further care.1 Rates of drowning The guidance in this report does not indicate an exclusive course death vary with age, sex, and race; those at greatest risk are toddlers of treatment or serve as a standard of medical care. Variations, and male adolescents. Underlying medical conditions, such as seizures taking into account individual circumstances, may be appropriate. and autism, also increase risk. Fortunately, childhood unintentional All technical reports from the American Academy of Pediatrics drowning fatality rates have decreased steadily from 2.68 per 100 000 automatically expire 5 years after publication unless reaffirmed, revised, or retired at or before that time. in 1985 to 1.09 per 100 000 in 2018. Most victims of nonfatal drowning DOI: https://doi.org/10.1542/peds.2021-052227 do well, but severe long-term neurologic deficits are seen with Address correspondence to Sarah Denny, MD, FAAP. E-mail: extended submersion times, prolonged resuscitation efforts, and lack of sarah.denny@nationwidechildrens.org early bystander-initiated cardiopulmonary resuscitation (CPR).2–4 PEDIATRICS (ISSN Numbers: Print, 0031-4005; Online, 1098-4275). Copyright © 2021 by the American Academy of Pediatrics The American Academy of Pediatrics (AAP) has revised this technical FINANCIAL DISCLOSURE: The authors have indicated they have no report because of new information and research regarding (1) financial relationships relevant to this article to disclose. populations at increased risk; (2) racial and sociodemographic disparities in drowning rates; (3) water competency (water safety knowledge and attitudes, basic swim skills, and response to a swimmer To cite: Denny S A, Quan L, Gilchrist J, et al; AAP Council on Injury, Violence, and Poison Prevention. Prevention of in trouble)5,6; (4) the need for close, constant, attentive, and capable Drowning. Pediatrics. 2021;148(2):e2021052227 adult supervision when children are in and around water as well as life Downloaded from www.aappublications.org/news by guest on October 10, 2021 PEDIATRICS Volume 148, number 2, August 2021:e2021052227 FROM THE AMERICAN ACADEMY OF PEDIATRICS
jacket use among children and group (2.26 per 100 000 individuals have the lowest adults; (5) the importance of population), with children aged 12 drowning risk of all races and physical barriers to prevent access to 36 months being at highest risk ethnicities in swimming pools but to water when children are not (3.38 per 100 000). There is a the highest in natural water settings expected to be around water; and second peak incidence in (1.22 per 100 000 among AI and AN (6) the Drowning Chain of Survival adolescence (1.90 per 100 000 versus 0.63 per 100 000 among and importance of bystander CPR among boys aged 15 to 19 years), Black and 0.42 per 100 000 among (Table 1). attributable largely to a high white individuals). AI and AN number of male drowning deaths. individuals could not be included in In 2002, the World Congress on Approximately 75% of childhood additional analyses of race and Drowning and the World Health drowning victims are boys,1 and, ethnicity (eg, white, Black, Hispanic) Organization revised the definition after the first year of life (during by single year of age because of of drowning to be “the process of which risks are often similar), boys small numbers. When considering experiencing respiratory impairment are at greater risk of drowning than race and ethnicity as a risk factor, from submersion/immersion in are girls at each age. Among age dramatically influences liquid.” Drowning outcomes are children and preteens, drowning drowning disparities. The highest classified as death, no morbidity, or death is roughly twice as common in rates were among children aged 1 morbidity (further divided into boys as in girls, but among year, with rates for white children moderately disabled, severely adolescents, the rate is almost 10 (5.22 per 100 000) higher than disabled, vegetative state/coma, and times higher among boys (Table 2).1 those for Hispanic (4.14 per brain death). Terms such as wet, The higher drowning rate for boys 100 000) and Black (2.98 per dry, near, secondary, active, passive, has been explained by greater 100 000) children. Between the ages and silent drowning should not be exposure to aquatic environments, of 1 and 5 years, drowning rates used. The 2002 revised definition overestimation of swimming ability, decreased significantly for each and classification is more consistent higher risk taking, and greater racial and ethnic group but with other medical conditions and alcohol use.9,10 decreased less among Black injuries and should help in children. However, the drowning drowning surveillance and collection Among children aged 0 to 19 years rates for Black children were of more reliable and comprehensive overall, drowning rates from 2014 significantly higher than those for epidemiological information.7 to 2018 are highest among Black white and Hispanic children at every (1.79 per 100 000) and American Sociodemographic Factors age from 5 years to 18 years, and Indian (AI) and Alaska native (AN) this difference persisted when Rates of drowning vary by (1.49 per 100 000) individuals; examining drowning in swimming sociodemographic factors, such as drowning rates are lower among pools and natural water settings. An age, sex, race and ethnicity, and the white (1.06 per 100 000), Asian analysis that was focused presence of neurodevelopmental American and Pacific Islander (0.85 specifically on swimming pool disorders such as epilepsy, autism per 100 000), and Hispanic (0.82 per drowning deaths in the 5- to 24- spectrum disorder (ASD), and 100 000) individuals.1 One analysis year age group demonstrated that intellectual disability. Drowning of 11 years of fatal drowning data Black males had higher drowning rates are reported on the basis of among people younger than 30 rates than either white or Hispanic the population under examination, years reveals that AI and AN males, even when adjustments were not on the basis of the group’s individuals have the highest rates of made for income. Although the exposure; exposure-based rates fatal drowning (2.57 per 100 000), majority of white children drowned might increase disparities among higher than both Black (1.90 per in residential pools, Black children groups.8 The highest rate of 100 000) and white (1.32 per were more likely to die in a public drowning is in the 0- to 4-year age 100 000) individuals. AI and AN pool, often at a motel or hotel.11 In swimming pools, Black children TABLE 1 Key Evidence-Based Strategies aged 5 to 19 years were 5.5 times Assess all children for drowning risk on the basis of risk and age, and prioritize evidence-based strategies: more likely to drown than white Barriers children of the same age.12 With no Supervision physiologic differences to explain Swim lessons the difference in drowning risk, race Life jackets and ethnicity are likely a proxy for CPR social and cultural differences Downloaded from www.aappublications.org/news by guest on October 10, 2021 2 FROM THE AMERICAN ACADEMY OF PEDIATRICS
TABLE 2 Unintentional Drowning Deaths, United States, 2014–2018 The role of socioeconomic status Average Annual (Crude Rate No. Deaths Per 100 000) and income on drowning rates, independent of race, is not well Age Group, y Boys Girls Totala known. Worldwide, drowning rates
occurring between noon and 9 PM.27 occurred in bathtubs, and 8% were (rivers, creeks, lakes, ponds, canals, In another report, approximately unspecified.32 and quarries).29 In children younger one-half of drownings occurred than 5 years, the largest numbers of between 4 PM and 6 PM, coinciding Most infant drowning deaths occur natural water drownings occur in with the busiest swim times as well in bathtubs (62%–71%) and large ponds, whereas older children more as distractions secondary to meal buckets (16%).25,29 Almost all commonly drown in lakes.39 preparation.28 parents report believing a child should be at least 6 years old before Although children aged 5 to 14 For the period 2014–2018, the 3 US being allowed to bathe alone.33 years are slightly more likely to states with the highest number of However, approximately 15% to drown in a natural body of water drowning deaths in the 0- to 19- 30% of caregivers have reported than in a swimming pool, a high year age group were California (419 leaving their children younger than proportion (69%) of adolescents 2 years unsupervised in the bath for aged 15 to 19 years drowned in per 100 000), Florida (489 per a period ranging from 1 minute to natural bodies of water.29 More than 100 000), and Texas (516 per slightly over 5 minutes.34,35 In fact, one-half of natural water drownings 100 000). For the same age group, in this study, 33% of parents occur in children younger than 14 the states with the highest rates of reported leaving children younger years, and a greater proportion of drowning deaths per 100 000 than 2 years for a little over 1 these occur in urban settings with population aged 0 to 19 years were minute and 24% for more than 2 populations of more than 1 Louisiana (2.3), Florida (2.1), and minutes but less than 5 minutes.34 million.39 Mississippi (2.0). The lowest The caregivers were distracted by a drowning death rates were reported phone, getting diapers or clothes for In-ground Pools in some of the New England and the child, or completing household As opposed to open bodies of water, mid-Atlantic states.25 chores.34 Of note, first-time parents swimming pools have fewer were less likely to leave children in drowning hazards, such as unknown Setting the bathtub when compared with depths, undefined areas, and Age is an important determinant of parents with an older child.36 The presence of currents and waves.12 drowning location. Most infants association of unsupervised bathtub However, swimming pools can pose drown in bathtubs and buckets, drowning deaths with the use of a serious risk to toddlers and young whereas the majority of preschool- bathtub seats and rings was children and older children who do aged children drown in swimming recognized more than 2 decades not know how to swim. There are pools. Older children and ago.37 The bath seat and ring are an estimated 6700 pool- or spa- adolescents are more likely to designed to position the infant in a related, hospital ED-treated, nonfatal drown in natural bodies of water. In sitting position with 3 to 4 legs and drowning injuries and 379 pool- or a large national study of 1420 suction cups at their base. Three spa-related fatal drownings each drowning deaths in children hazard scenarios have been year involving US children younger younger than 20 years, 47% of described with these devices: (1) than 15 years.40 Of these, 75% drownings in all age groups the seat tipping over from suction involve children younger than 5 occurred in fresh water, 32% in cup failure, (2) the child becoming years. The recurring drowning artificial pools, 9% in the home entrapped in leg openings that are scenario in pools and spas for young (bathtubs, buckets), and 4% in salt too big, and (3) the child climbing children includes unexpected, out of the seat.37 Additionally, infant unsupervised access to the water. water.29 In a study from Washington tubs pose another risk contributing Only 17% had been last seen in or state, natural bodies of water were to bathtub drownings. Between near the pool or spa before the the setting in 35% of drownings in January 2004 and December 2015, a incident and 10% had compromised the 0- to 4-year age group, 69% of total of 247 incidents were reported or circumvented a pool or spa the drownings in the 5- to 14-year to the Consumer Product Safety barrier.40 age group, and 95% of the Commission (CPSC) involving infant drownings of adolescents.30 Similar tubs, 31 fatal and 216 nonfatal.38 Pediatric swimming pool drownings findings were found in another occur in single-family and study conducted in Massachusetts.31 In a national study, 56% of multifamily residences or public In contrast, for nonfatal drowning drownings in children aged 0 to 4 pools. Pediatric swimming pool involving children and adults, 57% years occurred in swimming pools, drownings in single-family and occurred in pools, 25% occurred in but a sizable portion (26%) multifamily residences are best natural bodies of water, 9% occurred in fresh bodies of water predicted by the number of pools by Downloaded from www.aappublications.org/news by guest on October 10, 2021 4 FROM THE AMERICAN ACADEMY OF PEDIATRICS
housing type and the number of surrounded by a barrier to prevent Drain Entrapment children aged 0 to 17 years by access when the pool is not in use.42 Entrapment and hair entanglement housing type.41 The risk of a The American Society for Testing remain causes of injury and submersion is 2.7 times higher for a and Materials (ASTM) has published drowning in the pediatric child at a multifamily than a single- a standard (F 2666-16) for population. The CPSC reported 11 family residence and 28 times more aboveground pools for residential victims of circulation entrapment likely in a swimming pool at a use that addresses structural from 2014 to 2018 (4 pool and 7 multifamily property than a pool at integrity, sanitation, electrical safety, spa), including 2 fatalities, all in a single-family residence.41 and safety message labeling.44 children aged 0 to 14 years, with the Fixed and Portable Aboveground peak in the 5- to 9-year age group.48 Unfortunately, many parents do not Pools A circulation entrapment is defined consider fencing for an inflatable or as an entrapment involving the Aboveground pools can be fixed or portable pool, and such pools often water circulation system of the portable. Aboveground pools can fall outside of local building codes product. Hair entanglement typically vary in size and height from small that require pool fencing. Because involves girls with long hair who are inflatable pools to larger versions they contain such large amounts of water, these pools are often left underwater near a suction outlet. that can hold thousands of gallons of The water flow into the drain water.42 A portable pool is any filled for weeks at a time, presenting a continuous danger. The soft sides sweeps the hair into and around the movable structure intended for of some models allow children to drain cover, where it becomes swimming or other water lean over and easily fall into the entangled in the holes and recreation, including wading pools, protrusions of the cover. Other inflatable pools, and “soft-sided, self- pool headfirst. Ladders supplied with inexpensive aboveground pools types of entrapment involve a limb rising” pools. Portable pools are generally cannot be locked to block or body part. This scenario often increasingly popular compared with fixed aboveground pools because access and are cumbersome to involves a child playing with an they can be set up and taken down remove from the pools. Whether open drain, inserting a hand or foot or moved to another location with portable or fixed, children may be into the pipe, and then becoming relative ease. Portable pools in able to gain access to the water trapped by increasing suction and residential settings also pose a risk more easily than parents and resulting tissue swelling. Deaths of submersion-related morbidity and caregivers intend. Children can enter occur from drowning. mortality to children. the pool using the pool ladder (68%) or by climbing on a nearby Entrapment and entanglement can From 2014 to 2016, there were, on object (20%).45 In a study of be prevented by the use of special average, 363 fatalities each year aboveground pools, children drain covers, safety vacuum release associated with pool or spa between 42 and 54 months of age systems (SVRSs), filter pumps with drownings involving children were shown to be able to climb into multiple drains, and a variety of younger than 15 years. a pool with a 48-inch wall, even if other pressure-venting filter Aboveground pools accounted for the ladder was removed.46 construction techniques.49 19% and portable pools accounted Unfortunately, many parents and for 5% of these fatalities.43 It is important to stress that no pool and spa owners are not aware single intervention is fully protective. of the risk of entrapment and The CPSC recommends that all Rather, multiple layers of protection entanglement; only 15% have pools, in-ground and aboveground, are recommended. Industry is installed antivortex drain covers, have a barrier, optimally 4-sided advised to develop affordable and only 14% have multiple drain isolation fencing. The pool structure effective products that include systems, and only 12% have SVRSs can serve as a barrier if the walls of isolation fencing, safety covers, and in their pools or spas.50 In 2007, the pool are high enough to meet alarms for portable pools. Extensive Congress passed the Virginia the recommended 4-foot height for public education should stress that Graeme Baker Pool and Spa Safety barrier fencing. Alternatively, a children can drown in portable pools. Act, which requires drain covers, barrier can be mounted onto the top These efforts should be combined unblockable drains, and SVRSs for of the pool structure. The CPSC also with strategies that reduce drowning all public pools and spas in the recommends that, if the pool walls risk, such as close supervision, CPR United States.51 The act markedly are not high enough, the steps or education, and methods to prevent reduced the number of injuries and ladder leading to the pool be unsupervised children from gaining deaths attributable to drain secured, locked, or removed or access to these pools.47 entrapment.52 Although the act does PEDIATRICS Volume 148, number 2, Downloaded August 2021 from www.aappublications.org/news by guest on October 10, 2021 5
not apply to private pools, children compared with matched, over 8 months, as parents’ residential pool owners can protect alive children.22 Among 127 perceptions of their child’s swim against entrapment by implementing drowning deaths in children skill increased, their belief in the the recommendations reflected in examined by a state’s child death child’s ability to keep themselves the legislation. review teams, 38 (30%) were not in safe in the water increased and their the care of an adult (4% perception regarding the need for Lapses in Adult Supervision unsupervised entirely, 25% with parental supervision decreased.59 Although poor supervision is often other children or friends, 4% at a The sociocultural norms and cited as a contributing factor for location with lifeguards present). In environment of a community can childhood drowning, especially for deaths occurring among children also influence parental perceptions younger children,18,53,54 an accepted younger than 5 years, teams and resultant supervisory behavior definition for adequate supervision identified inadequate supervision that is deemed appropriate.60 is lacking.55 Supervisory behavior and isolated neglect as a factor in has been described as being 68% (21 of 31) of cases.18 When Alcohol composed of 3 components: responding to an online Alcohol plays a significant role in proximity, attention, and questionnaire, parents admitted that drowning risk related to boating, continuity.56 Attention and they talked to others (38%), read swimming, and supervision. A meta- continuity are related to awareness, (18%), ate (17%), and talked on the analysis found that 30% to 70% of and proximity is related to the phone (11%) while supervising their swimming and boating fatal ability to intervene if needed. child near water.57 In a study of 496 drowning victims had a measurable Proximity might be particularly drowning deaths in children blood alcohol concentration (BAC) important for young children and/or younger than 14 years that were and that 10% to 30% of these nonswimmers. For beginning reviewed by state child death deaths could be attributed swimmers, adequate supervision review teams, only 10% were specifically to alcohol use.61 In should include “touch supervision” completely unsupervised at the time boating, there is evidence that the in which the supervising adult is of the drowning.57 A more recent relative risk of drowning death is within arm’s reach of the child so examination of national child death directly related to BAC, with a 16- they can pull the child from the review data found that supervision fold greater risk when BAC was water if the child’s head becomes was assessed to be lacking in 49% greater than 0.10 (100 mg/dL).62 submerged. High levels of all 3 of incidents involving children Boat passengers are at risk for components are likely necessary to drowning in pools. Caregivers often alcohol-related drowning regardless keep children safe when around provided inadequate supervision of the alcohol use of the boat water. When children are not because of drug or alcohol operator.63 Most drownings intended to be in or around the impairment, injury or illness, or associated with alcohol occur during water, differing levels of the distraction. Necessary supervision recreational periods, over weekends, components may be appropriate, was noted to be lacking more often and in the afternoon. A longitudinal but the inevitable decreases in among drowning deaths involving study showed that a decrease in attention and proximity and lapses younger children compared with regional unintentional drowning in continuity highlight the need for older children.54 Similarly, in an rates was associated with a decrease barriers to prevent water entry. It is Australian study of 339 in deaths attributable to alcohol important to note that supervision unintentional drowning deaths use.64,65 cannot replace barriers, and barriers among children aged 0 to 14 years, cannot eliminate the need for coroners identified lack of Alcohol may increase the risk of supervision; they should work in supervision as a contributory factor drowning not only by impairing conjunction with each other. in 72% of cases.53 judgment and performance but also through physiologic effects (eg, poor Drowning most often occurs quickly Parental perceptions regarding balance, impaired orientation, and quietly during periods of necessary levels of supervision hypothermia) that affect survival inadequate supervision. In change as children progress through once submersion occurs.62 Alcohol Bangladesh, a case-control study of swim training, potentially to the use while boating is also unintentional injury deaths among detriment of the child’s safety.58,59 significantly associated with low or children younger than 5 years found In a survey of parents of children no life jacket use.66 Little that fatalities were 3 times more aged 2 to 5 years enrolled in information is available regarding likely to occur in unsupervised community swim lessons 4 times the association of drug use and Downloaded from www.aappublications.org/news by guest on October 10, 2021 6 FROM THE AMERICAN ACADEMY OF PEDIATRICS
drowning. In a 10-year retrospective 10 to 18 months can climb into a contributing to 30% to 70% of study from Ohio, researchers found bathtub.70 recreational water deaths among US that only 3% of 141 accidental adolescents and adults.76 Providing drowning deaths were associated Therefore, the primary problem for drowning prevention anticipatory with illicit drugs.67 this young age group is lack of guidance to adolescents and their barriers to prevent unanticipated, caregivers, especially relating to Studies examining the relationship unsupervised access to water, alcohol use, can help address of caregiver alcohol use and including swimming pools, hot tubs reported low rates of water safety unintentional childhood injury and spas, bathtubs, natural bodies of knowledge in this age group.77 indicate that caregiver-reported water, and standing water in homes number of drinks predicted (buckets, tubs, and toilets). The Boaters decreased caregiver supervision and CPSC found that 69% of children In 2019, the US Coast Guard a higher likelihood of children younger than 5 years were not reported 46 boating deaths in sustaining injury.68,69 Avoidance of expected to be at or in the pool at individuals aged 19 years and alcohol and drug intake positively the time of a drowning incident.71 younger, with 59% attributed to affects caregivers’ prevention of and drowning; the remainder were Adolescents recognition and response to a child mostly attributable to trauma. The struggling to swim in water, Older adolescents (aged 15 to 19 majority (78%) of the boating resulting in better drowning years) have the second-highest fatal deaths in this age group occurred surveillance. Alcohol and other drug drowning rates. In this age group, while riding in an open motorboat use should be avoided when approximately one-half of all (39%) or canoe or kayak (39%). swimming, boating, or supervising drownings occur in natural water Analysis of all fatal boating incidents children in and around the water. settings.72 In 2016, SafeKids revealed that 70% of the operators Boaters should be educated about Worldwide reported that the natural had not had boating safety water fatal drowning rate for instruction, and 23% of the the dangers of consuming alcohol adolescents aged 15 to 17 years was incidents cited alcohol as a leading when operating or riding in a watercraft, and authorities should more than 3 times higher than that factor.78 for children aged 5 to 9 years and enforce local Boating Under the twice the rate for children younger Most boating-related drowning Influence legislation. than 5 years.54 Adolescence is a deaths (86%) occur among At-Risk Populations formative period, often involving individuals who are not wearing a seeking high-intensity and exciting life jacket.78 In children younger Certain populations are at increased experiences and sensations.73 than 14 years, nearly 45% of those risk of drowning because of During this time, adolescents are who died in a boating-related behavioral, skill, or environmental especially vulnerable to the incident were not wearing a life factors as well as underlying presence of peers. The mere jacket.57 Federal law requires life medical conditions. presence of peers promotes risk- jacket use for children younger than Toddlers taking activity, especially if the 13 years on recreational boats in the adolescent has experienced previous United States. In an observational For the period 2014–2018, the social isolation.74 This behavioral study of small boats, researchers highest rate of drowning occurred in psychology plays a role in found that 90% of children younger the 0- to 4-year age group (2.26 per vulnerable teenagers, especially than 5 years wore life vests, but 100 000 population), with children adolescent boys of racial and ethnic only 13% among those aged 14 aged 12 to 36 months being at minorities, in social aquatic years or older wore life vests.79 highest risk (3.38 per 100 000). activities. The increased risk for Trends in life jacket use from 1999 Most infants drown in bathtubs and fatal drowning in adolescents can be to 2010 showed an increase in life buckets, whereas the majority of attributed to several factors, jacket use across all pediatric age preschool-aged children drown in including overestimation of skills, groups in all boat types, but only an swimming pools.29 These children underestimation of dangerous increase among adult boaters in are developmentally curious and situations, engagement in high-risk sailboats.80 Another observational drawn to water but lack the and impulsive behaviors, and study of swimmers and waders in awareness of its dangers. For substance use.75 Alcohol remains a designated swim areas revealed that instance, as many as 35% of leading factor in drowning deaths life jacket and other flotation device typically developing children aged among adolescents and adults, use decreased with increasing age, PEDIATRICS Volume 148, number 2, Downloaded August 2021 from www.aappublications.org/news by guest on October 10, 2021 7
with 50% of children younger than Autism increased risk of drowning related 6 years using a life jacket compared Children with ASD are at increased to increased risk taking and with 3% of adults.81 risk of drowning. A 2017 study impulsivity. Studies suggest a strong revealed that unintentional injury association between ADHD and risk deaths were nearly 3 times as likely of all unintentional injuries.91,92 Underlying Medical Conditions for all individuals with ASD Studies have demonstrated a Epilepsy compared with the general reduction in unintentional injury Epilepsy is a known risk factor in population.86 This excess risk was risk among those children diagnosed drowning, and drowning is the most particularly high for children with with ADHD who are being treated common cause of death from greater degrees of intellectual with medication.92,93 unintentional injury for people with disability87 and for those younger Other Neurologic Diagnoses epilepsy, most commonly in than 15 years, who were reportedly bathtubs.82 Children with epilepsy 40 times more likely to die of For children with neuromuscular have a relative risk for fatal and injury.86 Drowning, specifically, is a junction and muscle diseases or nonfatal drowning 7.5-fold to 10- leading cause of unintentional injury peripheral neuropathies, risk of fold higher than children without deaths among children with ASD.86 participation in water-based Wandering was the most commonly activities may depend on the degree seizures.83,84 Drowning risk is reported behavior leading to of fatigability and whether the dependent on such factors as age, drowning, accounting for nearly disease is rapidly degenerative. If severity of illness, degree of 74% of fatal drowning incidents engaging in water-based activities, exposure to water, and level of among children with ASD.88 It has consultation with the child’s supervision.83–85 been proposed that swimming neurologist and one-to-one adult Despite this drowning risk, water- lessons be provided to children after supervision (ie, constantly attentive based activities such as swimming the diagnosis of ASD is made.86 A and ready to quickly intervene) is small pilot study of an 8-hour advised. Children with movement can be safe for children with aquatic group therapy program disorders, hemiplegia or diplegia epilepsy, especially for those with demonstrated a statistically (eg, cerebral palsy, stroke), white well-controlled seizures (as defined significant increase in water safety matter diseases (eg, by the child’s neurologist). Many skills among children with ASD.89 adrenoleukodystrophy), and children with epilepsy learn to swim However, swimming instruction neuroimmunological disorders (eg, (and can do so safely), and some multiple sclerosis), have varied alone may not confer the necessary children with epilepsy swim effects of the diseases on water ability to transfer learned skills from competitively. Children with poorly safety and may have individualized one water setting to another. controlled seizures (as defined by Supervision and barriers with capabilities. Therefore, consultation the child’s neurologist) might be alarms are critical layers of with a child’s neurologist is advised safest with one-to-one direct protection against drowning for regarding participation in water- supervision (ie, constantly attentive children with ASD and other based activities. Children with and ready to quickly intervene) disabilities. Additionally, removal of implantable devices (eg, during water-based activities. enticing toys from the pool area ventriculoperitoneal shunts, vagus Bathtubs and shallow water can when the pool is not in use is nerve stimulators) are also advised present a hazard for any child with advised. The National Autism to consult their neurosurgeon about epilepsy, and showers are preferred Association’s Big Red Safety Box90 is water safety. over baths when age appropriate.17 a resource that aids in development of a safety plan for public places Cardiac Arrhythmias Parents of children with poorly where there is a handoff of Exertion while swimming can controlled seizure disorders should supervision so that children with trigger arrhythmia among have a discussion with their child’s ASD and other disabilities do not individuals with long QT neurologist or pediatrician before wander off. syndrome.94 Although the condition any swim activity. Whenever is rare and such cases represent a possible, children with epilepsy Attention-Deficit/Hyperactivity Disorder small percentage of drownings, long should also consider swimming only Although it has not been specifically QT syndrome should be considered at locations where there is a examined, children with a diagnosis as a possible cause for unexplained lifeguard to add a layer of protection of attention-deficit/hyperactivity submersion injuries among to their one-to-one supervision. disorder (ADHD) may have an proficient swimmers in low-risk Downloaded from www.aappublications.org/news by guest on October 10, 2021 8 FROM THE AMERICAN ACADEMY OF PEDIATRICS
settings. Additionally, Brugada capable of recognizing and in Melbourne, Australia. At syndrome and catecholaminergic responding appropriately to a intervention pools, researchers polymorphic ventricular tachycardia swimmer in distress. Diligent observed improved attention, may also lead to increased risk.95 supervision, along with other proximity, and preparedness among This increased drowning risk measures, may be increasingly parents of children aged 6 to 10 underscores the need to counsel on important among children with years but no significant changes the importance of close supervision conditions that increase drowning among parents of younger or older for any child or adolescent with risks, such as ASD or seizures, as swimmers.98 these conditions when in or around noted above. Additionally, water. supervision is paramount in Appropriate adult supervision for environments where barrier fencing children around water is close, Interventions is not possible. constant, competent, and attentive. In the Haddon matrix of injury In addition, supervisors need to prevention, safety interventions are Unfortunately, parents and know what a distressed swimmer aimed at changing the environment, caregivers may have misperceptions looks like and how to safely the individual at risk, or the agent of about what drowning looks like and intervene if needed. Development injury (in this case, water). For how to appropriately supervise and evaluation of effective water drowning prevention, the children.54,97 In a survey of 1003 safety education for parents are still environment and the individual are parents of children aged 0 to 12 needed. the prime targets (Table 3). Experts years with access to a pool, researchers found that 48% of Antientrapment and generally recommend multiple parents mistakenly believed they Antientanglement Measures layers of protection be used to would be able to hear splashing or Entrapment and entanglement prevent drowning because no single crying if their child was in trouble in prevention measures include use of strategy is likely to prevent all the water, 56% believed that a special drain covers, SVRSs, filter submersion deaths and injuries. lifeguard, if present, is the primary pumps with multiple drains, and a Such layers might include person responsible for supervising variety of other pressure-venting environmental changes, such as their child, and 32% reported filter construction techniques.49 adult supervision, antientrapment leaving their child entirely and antientanglement measures, Although such devices are required unsupervised in a pool for 2 pool fencing, pool covers, water in commercial pools, they are often minutes or longer.54 entry alarms, lifeguards, and CPR not required in residential pools.47 training. Additional prevention Residential pool owners should be Because young children who fall layers focused on the individual into water often make no noise and educated to include these effective would include strategies such as can be hard to see below the water safety measures. swimming and survival skills surface, proper care of a young Pool Fencing training and use of life jackets. A nonswimmer or beginning swimmer concise list of recommendations can requires the supervising adult to be Pool fencing is one of the most be found in the AAP policy constantly attentive, in close important prevention strategies to statement “Prevention of proximity (ie, within arm’s reach) decrease the risk of drowning in Drowning.”96 and prepared to intervene. To stress swimming pools when children are the importance of supervision, as not supposed to have access to the Adult Supervision water. Compared with no fencing, part of a water safety program, Close, attentive, and constant some communities promote “water installation of 4-sided fencing that supervision of young children when watchers,” encouraging a designated isolates the pool from the house and they are in or around any body of adult (identified with a hat or yard has been demonstrated to water is an essential preventive lanyard) to be responsible for decrease the number of pool strategy.18,53 Appropriate constant supervision without immersion injuries among young supervision also includes engaging in any distracting children by more than 50%.99–101 A examination of any unfamiliar activities.39 However, these Cochrane meta-analysis of available environment for water hazards (eg, programs have not been evaluated. studies found that the odds ratio for unfenced pool or pond) and In an attempt to improve parental a drowning in a fenced versus an prevention measures (eg, doors supervisory behaviors at public unfenced pool was 0.27 (95% locked, gates closed). Adequate pools, an educational program (Keep confidence interval [CI]: 0.16–0.47). supervision should include being Watch @ Public Pools) was piloted In this analysis, 4-sided fencing PEDIATRICS Volume 148, number 2, Downloaded August 2021 from www.aappublications.org/news by guest on October 10, 2021 9
TABLE 3 Haddon Matrix for Drowning Prevention Strategies With Associated Levels of Evidence Personal Equipment Physical Environment Social Environment Pre-event Provide close, constant, Install 4-sided fencing that Swim where there are Mandate 4-sided attentive supervision of completely isolates the lifeguardsa residential pool fencingb children and poor pool from the house and swimmersa yardb Evaluate preexisting health Install self-closing and Attend to warning signagec Mandate life jacket wearb conditionc latching gatesb Develop water competency, Wear life jacketsb Swim at designated swim Adopt the Model Aquatic including swim abilitya sitesc Health Codec Know how to choose and fit Install compliant pool Remove toys from pools Increase availability of a life jacketc drainsa when not in use to lifeguardsa reduce temptation for children to enter the poolc Avoid substance usea Install door locksc Empty water buckets and Increase access to wading poolsc affordable and culturally compatible swim lessonsc Know the water’s hazards Enclosures for natural Lakefront slope gradientd Close high-risk waters and conditionsc bodies of waterc during high-risk timesd Swim at a designated swim Promote life jacket loaner Develop designated natural sited programsc water swim sitesd Learn CPRb Role model life jacket use by Enforce Boating Under the adultsa Influence lawsb Take a boater education Make rescue devices coursec available at swim sitesc — Provide ability to call for helpb — Ensure functional watercraftc Event Water survival skillsc Rescue device availablec Lifeguard or bystander Emergency Medical responseb Systemb Postevent — AEDc Early bystander CPRb Advanced medical carec — Rescue equipmentc EMS responseb a Trials or diagnostic studies with minor limitations; consistent findings from multiple observational studies. b Well-designed and conducted trials, meta-analyses on applicable populations. c Expert opinion, case reports, reasoning from first principles. d Single or few observational studies or multiple studies with inconsistent findings or major limitations. (which isolates the pool from the by barriers to entry that will compliance with pool fencing laws house and yard) was superior to 3- effectively prevent small children from approximately 50% to 97%.102 sided fencing (which allows direct from gaining unsupervised and Another study from Australia access to the pool from the house) unfettered access to the pool or revealed that in the 5 years after with an odds ratio of 0.17 (95% CI: spa.”51 Three-sided fencing with enactment of legislation to improve 0.07–0.44).101 In an Australian self-locking or alarming doors the effectiveness of pool fencing, the study, researchers found that the between the house and pool area number of private swimming pool risk of a child drowning in a pool are often considered acceptable, drowning deaths halved.103 with 3-sided fencing was almost and, in some locales, pool covers can twice that seen in pools with 4- substitute for a fence. Often, a fence Children’s ability to climb fences sided fencing (incidence rate ratio, law pertains only to new pool varies with the type of fence. In one 1.78; 95% CI: 1.40–1.79).28 construction or to homes in which a study, chain-link fences were easily young child is actually living at the scaled by children, whereas Unfortunately, laws and ordinances time of the pool installation. ornamental iron bar fences proved regarding pool fencing may have Furthermore, in the United States, more difficult to climb.104 Fences dangerous loopholes. The Virginia pool fences are rarely inspected and should be at least 4 feet high, and Graeme Baker Pool and Spa Safety ordinances are often not enforced. no opening under the fence should Act defined minimum state law In a recent Australian study, be more than 4 inches (some requirements as “the enclosure of all researchers found that government building codes require a 5-foot fence outdoor residential pools and spas inspections raised the rate of and a maximum fence-to-ground Downloaded from www.aappublications.org/news by guest on October 10, 2021 10 FROM THE AMERICAN ACADEMY OF PEDIATRICS
distance of only 2 inches). Vertical they cannot be recommended as a feature.42 Effectiveness of door members of the fence should be less substitute for isolation fencing. alarms has not been studied, and than 4 inches apart to keep a child they should only be used as an from squeezing through, and there On the contrary, some types of pool adjunct to other proven layers of should be no foot- or handholds that covers actually present a hazard for protection against drowning. could help a young child climb the children. In 1980, the CPSC issued a warning about solar pool covers that Lifeguards fence. The fence should not prevent a clear view of the pool. Gates are designed to keep the water Although no formal scientific study should be self-closing and self- warm and minimize pool chemical has quantified the value of and water evaporation. When lifeguards, anecdotal reports latching, with the latch placed at children try to walk on or remove indicate that drowning rates are least 54 inches above the bottom of these thin sheets of plastic, they can lower when lifeguards are the gate. The gate should open away drown when they become entangled present.109 The United States from the pool (so that it will not in the cover or hidden from view.107 Lifesaving Association (USLA) open if leaned on) and should be Additionally, even weight-bearing reports that more than 75% of checked often to ensure good pool covers can make it difficult to drownings at USLA sites occurred at working order. Pool gate alarms see beneath them, potentially times when the beaches were may provide additional protection, concealing a drowning victim. unguarded, and the estimate that a but no research exists on their efficacy. Detailed guidelines for Alarms person will die by drowning while safety barriers for home pools are protected by USLA-affiliated Pool Alarms lifeguards is 1 in 18 million.110 In available online from the CPSC,42 The CPSC has evaluated the addition to rescue efforts, lifeguards but homeowners must also be performance of surface, subsurface, serve to make beaches safer by aware of local laws and building and wristband pool alarms. Several monitoring the aquatic environment, codes regarding pool fence of these alarms functioned properly; enforcing rules and regulations, and construction and after installation however, the report concluded that educating beachgoers about safety continue to check the fence and alarms “should not be relied on as a and injury prevention. Lifeguards gate’s integrity. substitute for supervision or a most often perform prevention Pool Covers barrier completely surrounding the activities (54.8%), with rescues pool.” No study has demonstrated representing only 1.9% of lifeguard Retractable pool covers and pool whether pool alarms prevent interventions.111 Studies indicate nets capable of holding the weight drowning.108 Additional research is that lifeguards are cost- of a child have been advertised as needed to evaluate the efficacy of effective112,113 and reduce situations effective barriers for drowning pool alarms, door alarms, and pool likely to end in injury or prevention. Because these covers covers in the prevention of drowning.109 Those choosing to must be removed and replaced each drowning. swim in natural bodies of water or time the pool is used, they are less other sites accessible to the public likely to be effective. Active Door Alarms should swim in designated swim interventions requiring an action Many homes with pools, including areas with lifeguards present. each time they are to be used are private residences and homes used proven to be less effective than as vacation rentals, have doors that Although lifeguards are an passive interventions, which are open directly into the pool area. It is important layer of protection always in effect.105,106 The CPSC important that all homes with pools against drowning, they are only one states that power safety covers can have security measures in place so part of a multilayered approach. A be installed on pools to serve as a that children cannot enter the pool study examining fatalities in security barrier, especially if the area unsupervised. Door alarms are lifeguarded US swimming pools pool is not completely separated one way to alert that the child has found that, in fatal incidents, from the house and the yard by a gained access to the pool area. The swimmers and pool bystanders fence.42 However, there is currently CPSC recommends that door alarms were twice as likely to identify the no evidence to support this sound for at least 30 seconds within submersion victim as were recommendation, and pool covers 7 seconds of the door opening, that lifeguards.114 A survey found that may impart a false sense of security. the alarm be loud and distinct from 20% of parents interviewed thought Because there are no studies other sounds in the house, and that that the lifeguard was the main regarding the efficacy of pool covers, the alarm have an automatic reset person responsible for supervising PEDIATRICS Volume 148, number 2, Downloaded August 2021 from www.aappublications.org/news by guest on October 10, 2021 11
their child while in the water, continuum (ie, after a witnessed or Swimming Lessons, Water Survival leading to a false sense of security brief submersion), rescue breathing Training, and Water Competency and a resultant lack of parental to provide effective ventilation of All children should eventually learn supervision.57 Nevertheless, trained, the victim may be sufficient if to swim. Swim skill and water professional lifeguards provide a circulation remains intact. As the competency may be the most significant layer of protection to drowning victim progresses from important drowning prevention swimmers, especially through respiratory arrest to cardiac arrest (no measures in natural water settings trained rescue and resuscitation in palpable pulse), resuscitation using the because fencing and lifeguarding the event of a significant compressions-airway-breathing may be impractical in these settings. submersion. However, lifeguards do sequence is initiated. “Hands-only” The position of the AAP has focused not take the place of caregiver CPR is not appropriate for drowning on the child being “developmentally supervision. victims because hypoxia is almost ready” for formal swimming lessons. exclusively the cause of cardiac arrest Developmental readiness for swim Bystander CPR resulting from drowning.118 In a lessons is multifaceted; the Immediate resuscitation at the recent study on bystander CPR after determinant of readiness is not the submersion site, even before the drowning, resuscitation of victims aged child’s age but the confluence of arrival of emergency medical 5 to15 years using compression and physical, social, behavioral and services (EMS) personnel, is the ventilation CPR was statistically emotional, and cognitive skills most effective means to improve significantly associated with balanced against the environmental outcomes in the event of a neurologically favorable survival and risks of drowning. submersion incident.2,3 Prompt survival to hospital discharge initiation of bystander CPR and compared with compression-only It has been demonstrated that activation of prehospital advanced CPR.119 children aged 2–4 years can acquire cardiac life support for the pediatric the motor skills for swimming and submersion victim have the greatest Automated external defibrillator that most children aged 4.5 years effects on survival and significantly (AED) use may not be beneficial in are developmentally ready to do so; improved neurologic prognosis.4,115 resuscitation of the drowning victim by 5 or 6 years of age, most can as opposed to other etiologies of master the front crawl.121–123 Although the Centers for Disease cardiac arrest. In a recent study, Subsequently, Brenner et al revealed Control and Prevention recommends application of an AED before the the preschool age group experienced all caregivers and supervisors of arrival of EMS, even for patients a reduction in fatal drowning risk if children be trained in CPR,32 several found to have a shockable rhythm, they had had swim lessons,124 as strategies can increase first response was associated with decreased did Yang et al in a study of Chinese skills, including rescue and infant and likelihood of favorable neurologic preschoolers.125 School-aged child CPR training for caregivers of at- outcome.115 Authors postulated that children in the Bangladesh SwimSafe risk drowning populations. A video on lay rescuers may have prioritized Program were demonstrated to have drowning risk, pool fencing, and CPR AED application over ventilation significantly decreased drowning shown to pregnant pool owners provided by CPR or had prolonged rates.126 increased their likelihood of obtaining CPR instruction compared with those resuscitation duration until arrival of not shown the video.116 Another study, EMS.115 The Heimlich maneuver is Before a case-control study of the American Heart Association’s not recommended because positive- swimming lessons,124 concerns “Child CPR Anytime,” a 25-minute CPR pressure ventilation by mouth or about early swim lessons were instruction given to parents while their mask will accomplish adequate based on the fear that swim lessons children were in a community swim oxygenation without the delay caused might increase drowning risk,127 lesson, led to significant sustained by performing the Heimlich with the premise that parents whose improvement in parental knowledge maneuver.108 Current American Heart children were in swim programs and confidence in performing CPR.117 Association guidelines recommend would have a false sense of security, that drowning victims who require resulting in inadequate supervision Drowning can be described as a any form of resuscitation (including around water. Several studies have continuum, with an initial phase of only rescue breaths) be transported shown that parents of small children respiratory arrest but intact to the ED for evaluation and enrolled in swimming lessons were circulation that will progress to monitoring, even if they appear alert more likely to endorse the cardiac arrest if hypoxia persists. In with effective cardiopulmonary statements “swimming lessons are the first stage of the drowning function at the scene.120 the best way to prevent drowning,” Downloaded from www.aappublications.org/news by guest on October 10, 2021 12 FROM THE AMERICAN ACADEMY OF PEDIATRICS
“toddlers can learn to save The international drowning deliver water safety classes, and themselves if they fall into water,” prevention community has begun to working with health care clinics and and “it is better to develop expand the concept of water places of worship to refer families to swimming ability rather than rely competency to include needed skills, swim programs.17,132 on adult supervision.”128,129 When knowledge, and behaviors.5 In these parents were given a targeted addition to basic swim skills, water Although early instruction may be educational program to reverse competency should include beneficial, there are currently no misconceptions about toddler water knowledge of local hazards in the data to support a recommendation safety or given feedback about their aquatic environment, risk judgment for infant swim lessons. Aquatic child’s progress or stories of close and self-assessment of abilities, and programs for young children calls, they were more likely to agree recognition and response to a (especially those younger than 1 that their child required more, not person in distress in the water, year) pose some medical concerns, less, supervision and more likely to including safe rescue and CPR.5 and initiation of a swim program disagree that swimming lessons Thus, acquisition of water should be discussed between an were the best way to prevent competency is a protracted process infant’s caregiver and pediatrician. drowning.58,128 Thus, swim lessons that involves learning in conjunction These include the risk of gastrointestinal tract infections, should include parental training to with developmental maturation and dermatitis, and acute respiratory improve the parents’ understanding physical skill sets by the child. illness that result from exposure to of their child’s actual swimming Barriers to swim lessons and water infectious agents and pool abilities and continued risk. competency are more commonly chemicals. Hyponatremia from The American Red Cross Scientific based in cultural norms, economics, ingesting water and hypothermia Advisory Council defines basic swim and access. Black communities have are also health risks to the infant.133 skills as the following: ability to reported a legacy of reluctance to Fortunately, medical problems from enter the water, surface, turn engage in swimming related to long- swimming are rare, treatable, and around, propel oneself for at least standing segregation and exclusion preventable events.134,135 The World Aquatic Babies and Children 25 yards, and then exit the water.129 from public pools.130 Vietnamese Network has published guidelines It is important to recognize that immigrant families reported that for the operation of aquatic performance of these water survival pool environments are alien and programs for children younger than skills, usually learned in a pool, is cold and recreational swimming is 3 years. The guidelines recommend affected by the aquatic environment not valued.131 Clothing that protects (1) required parental involvement, (water temperature, movement, modesty may not be allowed in (2) a fun atmosphere with one-on- depth, clothing, distance), for which some pools, and, for some religious one teaching, (3) qualified teachers, a person may be unprepared. and ethnic groups, single-sex aquatic (4) warm water to prevent Demonstration of skills in one settings are required.17 In addition, hypothermia, (5) maintenance of aquatic environment may not the multiple swim sessions required water purity, and (6) a limited transfer to another. Effective swim to achieve basic water competency number of submersions to prevent lessons should provide repeated and can be costly, and access to water ingestion and progressively more experiential affordable, convenient, and hyponatremia.136 The American Red training, including swimming in culturally appropriate swim lessons Cross has resources for choosing a clothes, swimming in life jackets, may be limited. Moreover, decreased swim program.137 falling in, and self-rescue. municipal funding for swimming Consequently, achieving basic swim pools and lifeguards has worsened Multiple studies have found that skills requires multiple sessions of access to swimming lessons and safe exposure to chlorination byproducts lessons. Thus, parents need to be water recreation in many in swimming pools can damage aware of their child’s progress and communities. These barriers can, respiratory epithelium and can keep their child in lessons until and should, be addressed through result in a child’s predisposition to basic water competency skills are community-based programs asthma and bronchitis and other achieved. More research is needed targeting high-risk groups by allergic conditions.138–142 However, to determine which types of swim providing free or low-cost swim a longitudinal study of children from instruction and water survival skills lessons, developing special birth to age 7 to 10 years revealed training are most effective in programs and changing pool no increased risk of respiratory preventing drowning in children of policies, using language and symptoms, allergy, or asthma among all ages. culturally appropriate instructors to those with chronic but PEDIATRICS Volume 148, number 2, Downloaded August 2021 from www.aappublications.org/news by guest on October 10, 2021 13
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