How should a drowning victim be managed in the emergency setting?

Emergency Management of Drowning

Prioritize airway and breathing over circulation (A-B-C sequence, not C-A-B) because drowning-induced cardiac arrest results from severe hypoxemia, making immediate ventilation the single most critical intervention for survival. 1

Immediate Prehospital Actions

Water Rescue and Initial Positioning

• Remove the victim from water as quickly as possible and place them in a near-horizontal position with the head elevated above the body 1
• If trained and safe to do so, begin rescue breathing while the victim is still in the water to prevent progression from respiratory arrest to cardiac arrest 1
• Do NOT routinely perform cervical spine immobilization unless specific circumstances suggest spinal injury (incidence ≈0.009%); unnecessary immobilization delays critical airway management 2, 1

Airway Management – Critical Pitfalls to Avoid

• Do NOT attempt the Heimlich maneuver or abdominal thrusts to clear water from the airway—only modest amounts of water are aspirated and it is rapidly absorbed, making these maneuvers unnecessary and potentially harmful 1
• Deliver two rescue breaths immediately after removal from water if the victim is unresponsive and not breathing 1
• Use suction only when needed to clear vomitus or debris, not for water 1
• Administer 100% oxygen as soon as available, then titrate to maintain normal oxygen saturation once measurable 1

Cardiopulmonary Resuscitation Protocol

Pulse Check and Compression Initiation

• Check for a pulse within 10 seconds after the initial two rescue breaths 2, 1
• If no pulse is definitively felt, start chest compressions immediately and continue standard CPR cycles 2, 1

CPR Sequence Specifics

• Healthcare providers should follow the A-B-C sequence (airway-breathing-compressions) rather than standard C-A-B because drowning arrests are primarily hypoxic 1
• Trained rescuers may initiate either A-B-C or C-A-B, but prioritizing ventilation is strongly preferred given the hypoxic etiology 2, 1
• CPR must include rescue breaths; compression-only CPR is inferior for drowning victims and should only be used when the rescuer cannot or will not provide breaths 1

Defibrillation Strategy

• Dry the chest and attach an automated external defibrillator (AED) once the victim is out of water 1
• Initiate rescue breaths and CPR before attaching an AED—do not delay CPR to obtain or apply an AED, as postponement worsens outcomes 1
• Shockable rhythms are uncommon in drowning arrests, occurring in only 2%–12% of cases, but attempt defibrillation if indicated 1

Managing Vomiting During Resuscitation

• Vomiting occurs in approximately two-thirds of victims receiving rescue breathing and 86% of those requiring full CPR 1
• Turn the victim onto their side and remove vomitus using a finger, cloth, or suction device 1
• If cervical spine injury is suspected, log-roll the victim as a unit to protect the spine 1

Hospital Advanced Life Support

Standard ACLS/PALS Protocols

• After initial resuscitation, follow standard Pediatric Advanced Life Support (PALS) or Advanced Cardiovascular Life Support (ACLS) protocols 2, 1
• Drowning does not require unique medication dosing—standard ACLS/PALS drug regimens apply 1

Medication Dosing

• Epinephrine: 0.01 mg/kg (0.1 mL/kg of 1:10,000 solution) IV/IO every 3–5 minutes; maximum single dose 1 mg in adults 1
• Amiodarone (for shockable rhythm): 5 mg/kg IV/IO bolus in pediatrics; adult loading dose 300 mg, second dose 150 mg 1

Ventilation Management

• Patients with severe symptoms may present with rales and foamy secretions and should be managed with high-concentration oxygen and positive airway pressure 3
• Ventilation therapy should target an intrapulmonary shunt ≤20% or PaO₂:FiO₂ ≥250 4
• Avoid premature ventilatory weaning, which may cause return of pulmonary edema requiring re-intubation 4

Mandatory Observation and Disposition

• All drowning victims who required any form of resuscitation must be transported to the hospital and admitted, even if they appear alert with effective cardiorespiratory function 2, 1
• Minimum observation period of 4–6 hours is required because decompensation can occur within this timeframe after both fresh- and salt-water drowning 2, 1
• Patients with minimal or no symptoms require physical examination and 4–6 hours of observation prior to discharge 3

Red Flags Requiring Immediate EMS Activation

• Altered mental status or excessive sleepiness, indicating ongoing hypoxemia 1
• Difficulty breathing or abnormal breathing patterns 1
• Persistent coughing after submersion 1
• Any history of loss of consciousness during the drowning incident 1

Prognostic Factors

• The duration and severity of hypoxia is the single most important determinant of outcome, outweighing factors such as water type (fresh vs. salt) or water temperature 1
• The pathophysiology involves acute lung injury with loss of surfactant, increased capillary-alveolar permeability, decreased lung compliance, and noncardiogenic pulmonary edema—salt and fresh water aspirations cause similar pathology 4