21 | Submersion Injuries with Dr. Sarah Lazarus
In this episode of PEM CHATT, host Toni Dobson is joined by pediatric emergency physician Dr. Sarah Lazarus to break down the critical topic of pediatric drowning and submersion injuries. Together, they explore real-world clinical scenarios, debunk common myths, and provide practical guidance for both clinicians and caregivers.
Drowning remains one of the leading causes of death in children, particularly ages 1–4, and even non-fatal events can result in devastating long-term consequences. This episode emphasizes both clinical management and prevention strategies—highlighting how quickly these events occur and how often they happen despite close supervision.
Drowning is fast and silentOften occurs in seconds with little to no splashing or noiseTerminology matters“Dry drowning” and “secondary drowning” are outdated and misleadingPathophysiology is respiratoryWater aspiration → surfactant washout → impaired gas exchange → hypoxiaObservation is criticalTrue aspiration events should be monitored for ~6 hours from the time of incidentImaging isn’t always helpfulChest X-rays can lead to unnecessary admissions without changing outcomesManagement is symptom-drivenAsymptomatic → observeSymptomatic → oxygen support, VBG, imaging, admissionCardiac arrest cases are severeFocus on oxygenation, ventilation, rewarming, and consider ECMO earlyPrevention requires layersNo single strategy (including swim lessons) is sufficientDrowning is an evolving process, not a single moment eventPatients should be observed for 6 hours after the eventSymptoms appearing days later are NOT due to drowningPediatric arrests are often respiratory in origin → prioritize ventilationAntibiotics and steroids are not routinely indicatedMost toddler submersion injuries do NOT require C-spine immobilization“Dry drowning” isn’t real.
This term originated from outdated medical concepts but is no longer used. If a child had a true submersion injury, symptoms will present within 6 hours—not days later.
Use “arms reach, eyes reach” supervisionPerform a home swim test (can the child swim 2 pool lengths?)Understand that:Swim lessons ≠ drowning proofLife jackets ≠ guaranteed safetyDrowning prevention requires multiple overlapping layers of safetyResources and references:
Brenner’s article: https://pubmed.ncbi.nlm.nih.gov/19255386/CHOA Algorithm: https://www.choa.org/-/media/Files/Childrens/medical-professionals/clinical-practice-guidelines/submersion-event-ed.pdfNEJM Article: https://www.nejm.org/doi/full/10.1056/NEJMra1013317#figures_media00:00 Welcome to PEM CHATT
00:19 Why Drowning Matters
01:12 Meet Dr. Sarah Lazarus
02:14 Bread Pudding is my favorite
03:34 Drowning Terminology
04:38 Who Is Most at Risk
06:08 Silent Drowning Explained
09:15 Systemic Effects Checklist
11:03 Fresh vs Salt vs Cold
11:46 Three Patient Categories
12:36 Case One Asymptomatic Kid
14:12 Avoiding Unneeded X-Rays
16:12 Case Two Symptomatic Infant
18:40 Imaging and Labs Strategy
18:58 When to Skip Antibiotics
20:02 Arrest Scenario Walkthrough
20:30 Resuscitation Priorities And ECMO
21:54 When Resuscitation Is Futile
22:40 C-Spine Immobilization Debate
23:24 Drowning CPR Starts with Breaths
25:29 Injury Prevention Work and Stats
27:14 Layers of Drowning Prevention
30:01 Dry Drowning Myth Busting
33:16 Key Pearls and Closing