Drowning
Nonfatal drowning High-yield Verified · Sep 2026Drowning is "the process of developing respiratory impairment due to submersion or immersion in a liquid medium"; outcomes are death, morbidity or no morbidity (StatPearls; WHO uses the same process definition).
Drowning is fast and usually silent. Everything that follows comes back to one problem — no oxygen. The nurse restores breathing first, protects the neck only when there was trauma, keeps the patient warm and handles a cold patient gently, and watches a patient who looks well for the delayed breathing trouble that can appear hours later.
What’s going wrong in the body
The normal physiology, where it fails, and why the body’s compensation backfires.
01 A process, not a single moment
WHO: "Drowning is the process of experiencing respiratory impairment from submersion/immersion in liquid. Outcomes are classified as death, morbidity and no morbidity." ILCOR notes that "In accordance with the Utstein consensus the World Health Organisation’s (WHO) definition of drowning was used."
Old terms are gone. StatPearls: the terms "wet drowning," "dry drowning," and "near-drowning" "are no longer accepted, although they may appear in older literature." Modern classification "distinguishes between fatal drowning, which results in death, and nonfatal drowning, which results in survival with or without morbidity." CDC: "Drowning is not always fatal."
It is silent. "Events usually occur rapidly and are most often silent. Thrashing movements are uncommon, and the typical presentation involves a motionless individual floating at the surface who then quickly disappears underwater" (StatPearls). CDC: "It can happen in seconds and is often silent."
02 Hypoxia is the injury
The sequence. "An initial episode of panic disrupts normal breathing patterns and prompts struggling to remain above water. Involuntary inspiratory effort follows, leading to hypoxemia. Subsequent aspiration of fluid and reflex laryngospasm occur when water reaches the lower respiratory tract" (StatPearls).
Lungs. "Death from drowning primarily results from hypoxemia caused by water aspiration, which disrupts alveolar gas exchange, destroys surfactant, and produces noncardiogenic pulmonary edema." "No significant difference exists between saltwater and freshwater drowning. Both result in hypoxemia and surfactant destruction, predisposing to noncardiogenic pulmonary edema and acute respiratory distress syndrome (ARDS)" (StatPearls).
Heart. "If rescue does not occur, hypoxia rapidly leads to loss of consciousness, apnea, and hypoxic cardiac arrest, usually presenting with bradycardia or pulseless electrical activity." "Arrhythmias may occur secondary to hypoxemia and water-induced hypothermia" (StatPearls).
Brain. "Most patients lose consciousness within 2 minutes, and irreversible brain injury typically occurs within 4 to 6 minutes." "Cerebral edema and elevated intracranial pressure develop as consequences of cerebral hypoxia, which is the major contributor to morbidity and mortality." So "Rapid correction of hypoxia is the highest priority in resuscitation" (StatPearls).
Cold water. "Cold water can confer neuroprotection, especially in children" — but hypothermia "also increases the risk of cardiac dysrhythmias" (StatPearls).
03 Rescue: breathing first
StatPearls: "Since tissue hypoxia, especially cerebral hypoxia, is the principal determinant of morbidity and mortality in nonfatal drowning, airway and breathing take precedence over chest compressions. Rescue breaths should be initiated promptly for apneic patients, with supplemental oxygen administered if available. Current guidelines recommend 5 initial rescue breaths before chest compressions, contrasting with the usual 2 breaths in standard BLS."
Evidence (ILCOR review). "There is a lack of high certainty evidence to inform treatment recommendations in relation to adults and children who sustain a cardiac arrest in the context of drowning. Empirical evidence suggests that priority should be placed on rapid reversible of hypoxia through ventilations, chest compressions and oxygen."
What not to do. "The Heimlich maneuver is no longer recommended in drowning resuscitation." "Routine cervical spine immobilization is indicated only for patients with a history or signs of trauma, such as from diving or a fall." "Supraglottic airway devices are not recommended in drowning" (StatPearls).
AEDs. "Automated external defibrillators (AEDs) have a limited role in drowning resuscitation as shockable rhythms occur in only 2% to 12% of patients. AED application should not delay or interfere with rescue breaths and chest compressions, which remain the priority" (StatPearls).
04 After rescue: observe, because lungs can worsen later
"Common, mild effects include coughing, respiratory distress, and laryngospasm, which may resolve with observation and supportive care. Uncommon but severe complications include hypoxic-ischemic brain injury, ARDS, pneumonia, and cardiac dysfunction" (StatPearls).
Observation. "Patients with mild or no symptoms may be observed in the emergency department for 4 to 8 hours. These individuals may be discharged with appropriate return precautions if they remain clinically stable. Symptomatic patients require extended observation and may need admission to the hospital ward or intensive care unit, depending on symptom severity" (StatPearls).
Delayed pulmonary edema. "Rarely, victims with normal initial chest radiography may develop fulminant pulmonary edema within 12 hours, potentially reflecting delayed ARDS, neurogenic edema, or airway hyperreactivity" (StatPearls). The sources teach this delayed risk; they do not use a separate diagnosis name for it.
Causes & risk factors
Modifiable factors are teaching targets — the patient can act on them.
Signs & symptoms
Each finding tied to the mechanism that produces it — and the triage it calls for.
Diagnostics
Complications
Medications for this condition
Why each class is prescribed here — every card links to its full pharmacology page.
Warmed fluids, not electrolytes. StatPearls (Hypothermia): "Warmed intravenous fluids, typically 38 to 42 °C, are useful for preventing additional heat loss and treating volume depletion, although they provide only modest rewarming when used alone." Routine electrolyte replacement is not a drowning treatment — "Electrolyte disturbances are uncommon unless hypothermia is present."
Nebulized bronchodilators such as albuterol may be given for bronchospasm after submersion (StatPearls).
When crystalloid is not enough, vasopressors may be required for refractory hypotension; cardiac support follows ACLS protocols (StatPearls).
Beyond medications
- Oxygen and airway support — StatPearls: rescue breaths for apneic patients "with supplemental oxygen administered if available"; "Acceptable measures include noninvasive positive-pressure ventilation and endotracheal intubation when airway protection is inadequate." "Noncardiogenic pulmonary edema and ARDS may develop and should be managed with evidence-based supportive care." In hospital, intubation is warranted when the airway is unprotected or saturation cannot be kept at 90% or above despite high-flow oxygen; oxygen is titrated to 92% to 96% to avoid both hypoxemia and hyperoxia; nebulized bronchodilators may be given for bronchospasm; cardiac support follows ACLS; and crystalloid or vasopressors may be needed for refractory hypotension (StatPearls).
- Not routine — StatPearls: "Glucocorticoids, diuretics, and empiric antibiotics are not recommended for routine use."
- Rewarming by severity (StatPearls, Hypothermia) — "Wet clothing should be removed promptly and replaced with dry insulation or warming blankets." Passive external rewarming suits many alert, stable patients with mild hypothermia who can shiver; "Active external rewarming is used for moderate hypothermia, severe hypothermia with preserved circulation, and mild hypothermia that does not improve with passive measures." Bypass and VA ECMO are "reserved for patients in hypothermic cardiac arrest, hemodynamically unstable individuals, and people unresponsive to less invasive rewarming techniques."
- Prognosis in the cold — StatPearls (Hypothermia): "Prognostication in hypothermic cardiac arrest should not be based on core temperature alone."
- Drowning Chain of Survival (StatPearls) — "First, primary prevention, including pool fencing, lifejacket use, swimming instruction, and vigilant supervision, addresses the root cause." Second, early recognition and calling for help; third, flotation from a safe distance; "Fourth, extrication should occur only when safe." "Fifth, BLS should be initiated immediately, escalated to ACLS as indicated, and emergency department transport should be arranged for all patients receiving any resuscitative intervention."
- Pool barriers (CDC) — "Construct and use a four-sided fence that is at least four feet in height and fully encloses the pool." "Remove all toys from the pool area that might attract children to the pool when the pool is not in use."
- Life jackets (CDC) — "Life jackets reduce the risk of drowning while boating for people of all ages and swimming abilities. Life jackets should be used by children for all activities while in and around natural water."
- Swimming, supervision and never swimming alone — CDC: "Participating in formal swimming lessons can reduce the risk of drowning among children and young adults." WHO: "The risk of drowning increases when children interact with water outside of active adult supervision." MedlinePlus: "Don't swim alone, or in bad weather," and "Supervise your children when they are in the water." CDC (epilepsy): swimming and other water sports can be risky for people with epilepsy, and swimming alone should be avoided.
- Other CDC prevention — "Avoid drinking alcohol before or during swimming, boating, or other water activities." "Do not drink alcohol while supervising children." "Lakes, rivers, and oceans have hidden hazards such as dangerous currents or waves, rocks or vegetation, and limited visibility." "Your CPR skills could save someone's life in the time it takes for paramedics to arrive."
- Community measures (WHO) — "Covering wells, using doorway barriers and playpens, fencing swimming pools and otherwise controlling access to water hazards greatly reduces water hazard exposure and risk." "Community-based, supervised childcare for pre-school children can reduce drowning risk." The WHO guideline on day-care (under 6) and basic swimming and water-safety skills (6 and older) "issues strong recommendations in favour of both interventions."
Nursing considerations
The RN-specific layer — each action paired with the reason it matters.
How a real nurse thinks
The clinical-judgment loop, worked for a typical presentation — reasoning, not reference.
- 1 Recognize cues
A nonfatal drowning with mild symptoms — intermittent cough, normal oxygen saturation, alert. No trauma mechanism. An open pool gate.
- 2 Analyze cues
Hypoxia is the main risk. He looks well now, but pulmonary edema can rarely develop within 12 hours even after a normal first assessment. With no diving or fall, cervical spine immobilization is not indicated.
- 3 Prioritize
Breathing and oxygenation first — continuous monitoring during a 4 to 8 hour observation period; keep him warm.
- 4 Generate solutions
Continuous pulse oximetry and respiratory checks; oxygen if saturation falls; report any worsening immediately; teach return precautions and pool-safety measures before discharge.
- 5 Take action
The nurse keeps him on continuous monitoring, removes his wet swimsuit and gives a warm blanket, and teaches the family about the pool fence, the gate and supervision.
- 6 Evaluate
After 6 hours his cough has stopped and his oxygen saturation has stayed normal. He is discharged, and the parents can say which breathing changes mean they must come back at once.
Scenario — you’re the nurse
Work each question before revealing the answer. Rationales explain the wrong options too.
A 6-year-old was pulled from a backyard pool by a parent after an unknown time under water. He coughed and cried on the pool deck; no CPR was needed. The gate had been left open.
Q1 Multiple choice A bystander pulls an adult out of a lake; she is not breathing. There was no diving or fall. What should the rescuer do first? - A. Perform abdominal thrusts to drain water from the lungs
- B. Give 5 initial rescue breaths, then begin chest compressions
- C. Immobilize the cervical spine before any other care
- D. Attach the AED and wait for its analysis before any breaths
Reveal answer & rationale
Q2 Select all that apply Which statements about drowning are correct? Select all that apply. - A. Saltwater and freshwater drowning need different treatment
- B. Drowning is usually silent
- C. Hypoxia is the main cause of injury
- D. Electrolyte disturbances are uncommon unless hypothermia is present
- E. The term near-drowning is no longer accepted
Reveal answer & rationale
Q3 Multiple choice Four hours into observation, the child in the scenario develops a faster breathing rate, a new cough and a falling oxygen saturation. What does the nurse do? - A. Reassure the parents — coughing is expected after a submersion
- B. Treat it as an emergency: notify the provider immediately and support oxygenation
- C. Give a diuretic to clear water from the lungs
- D. Discharge him, since the 4-hour minimum has passed
Reveal answer & rationale
Q4 Select all that apply A rescued swimmer is cold and wet with a core temperature of 30 °C. Which nursing actions are appropriate? Select all that apply. - A. Remove wet clothing and insulate
- B. Handle the patient gently
- C. Check for a pulse for 30 seconds before starting compressions
- D. Rub the arms and legs briskly to warm them
- E. Obtain an ECG
Reveal answer & rationale
Q5 Multiple choice The parents ask how to prevent this from happening again. Which advice is supported by CDC? - A. A three-sided fence with the house as the fourth side is enough
- B. A four-sided fence at least 4 feet high that fully encloses the pool, with self-closing, self-latching gates
- C. A supervising adult may drink alcohol if they stay close to the pool
- D. Pool toys can stay in the pool area when the pool is not in use
Reveal answer & rationale
Common questions
What causes drowning?
Can breathing get worse hours after a patient seems fine?
Why rescue breaths before compressions?
Should every drowning victim get a cervical collar?
How long is a well-looking patient watched?
How many people drown?
Sources
- Health and Safety Concerns — Epilepsy — CDC — Centers for Disease Control and Prevention
- Drowning: Prevention, Evaluation, and Management — StatPearls — StatPearls (NCBI Bookshelf)
- Drowning — fact sheet — World Health Organization
- Drowning Facts — CDC — Centers for Disease Control and Prevention
- Preventing Drowning — CDC — Centers for Disease Control and Prevention
- About Drowning — CDC — Centers for Disease Control and Prevention
- A systematic review of interventions for resuscitation following drowning (ILCOR, Resuscitation Plus 2023) — PubMed Central (CC BY-NC-ND 4.0)
- Hypothermia — StatPearls — StatPearls (NCBI Bookshelf)
- WHO Guideline on the prevention of drowning through provision of day-care, and basic swimming and water safety skills (2021) — World Health Organization (NCBI Bookshelf)
- Risk Factors for Drowning — CDC — Centers for Disease Control and Prevention
- Water Safety (Recreational) — MedlinePlus — MedlinePlus (National Library of Medicine)
Reviewed by Hae Suk Lee, RN
Educational summary for nursing students. Scenarios are fictional teaching cases. Always verify against current guidelines and your institution's protocols before acting in practice. Not medical advice.