EMS Treatment for Near-Drowning
For near-drowning patients, EMS should immediately prioritize rescue breathing and ventilation as the first intervention, followed by standard CPR if cardiac arrest has occurred, with all patients requiring any level of resuscitation transported to the emergency department regardless of apparent recovery. 1
Immediate Rescue and Extrication
When approaching a drowning victim, EMS personnel should:
- Remove the patient from water in a near-horizontal position with head elevated and airway open to prevent aspiration and facilitate breathing 1
- Maintain cervical spine precautions if trauma is suspected (diving incidents, water sports) 2
- Begin assessment immediately upon safe extrication
Primary Treatment Algorithm
1. Airway and Ventilation (FIRST PRIORITY)
The dominant pathophysiology in drowning is acute hypoxia, not primary cardiac arrest. Therefore:
- Provide rescue breathing/ventilation immediately - this is the single most important intervention that increases survival 1, 2
- Establish airway patency and provide oxygen supplementation
- For patients in cardiac arrest, administer 5 cycles of CPR before activating EMS if you are a lone rescuer 1
- The resuscitation sequence for drowning differs from standard cardiac arrest: use Airway-Breathing-Compressions rather than the standard Compressions-Airway-Breathing sequence 1
2. Cardiac Arrest Management
If cardiac arrest has occurred (less than 0.5% of all drowning rescues):
- Initiate standard BLS immediately
- Begin chest compressions with ventilations (not compression-only CPR)
- Dry the chest and apply AED when available 1
- Progress to ALS interventions including early intubation 2
3. Advanced Life Support Measures
Once ALS capabilities are available:
- Early endotracheal intubation for patients in cardiac arrest or with severe respiratory compromise 2
- Establish IV access
- Continue aggressive ventilation and oxygenation
- Monitor for and treat complications (pulmonary edema, aspiration)
Critical Pitfalls to Avoid
Do not assume oxygen therapy alone is sufficient. Recent evidence shows that supplemental oxygen without adequate ventilatory support does not improve outcomes or oxygenation in drowning victims 3. The key is ventilation, not just oxygenation.
Do not delay transport based on apparent recovery. The 2024 AHA guidelines are explicit: all persons requiring any level of resuscitation following drowning (including only rescue breaths) should be transported to the emergency department 1. Secondary deterioration can occur hours after the incident due to pulmonary edema and acute lung injury 4.
Do not use compression-only CPR. Unlike standard cardiac arrest where compression-only CPR may be acceptable, drowning victims require ventilation because the arrest is respiratory in origin 1, 2.
Prognostic Factors During Transport
Document and communicate these time-sensitive factors that influence survival:
- Duration of submersion 5
- Whether the drowning was witnessed 5
- Time to first resuscitation attempt 5
- Response to initial ventilation
- Total arrest time if applicable 5
Transport Considerations
- Rapid transport is essential - transportation time significantly affects survival 5
- Continue ventilatory support throughout transport
- Anticipate deterioration even in initially responsive patients
- All drowning victims requiring resuscitation need emergency department evaluation, regardless of field improvement 1
The evidence strongly supports that early, aggressive ventilation is the cornerstone of successful drowning resuscitation, with standard BLS/ALS protocols modified to prioritize airway and breathing over compressions in the initial approach.