Vomiting during resuscitation is more common than most people expect, and how you handle it in the moment can be the difference between a clear airway and a fatal aspiration. It happens often enough that trained rescuers are taught to expect it rather than be thrown off by it.
Vomiting Versus Regurgitation
Vomiting is an active, noisy process involving muscular effort to forcefully eject stomach contents, and it is usually obvious when it happens. Regurgitation is quieter and passive, a slow flow of stomach contents up into the throat that can happen in an unconscious person without any obvious muscular effort or sound, which is exactly what makes it dangerous. An unconscious patient can regurgitate silently while you are focused elsewhere, and the material can be drawn into the lungs before anyone notices.
Why This Matters During CPR and EAR
Vomit in the airway can physically block airflow, and if inhaled it can damage lung tissue severely. If vomiting occurs while you are performing rescue breaths or CPR, you need to manage the airway immediately rather than continuing as though nothing has happened.
What to Do If a Patient Vomits During Resuscitation
- Immediately turn the patient onto their side into a recovery style position to let vomit drain out of the mouth rather than down the throat.
- Clear the mouth of any visible vomit using your fingers or a cloth if needed.
- Reassess breathing and circulation once the airway is clear.
- If CPR is still needed, roll the patient back and resume compressions and breaths without unnecessary delay.
Recognising Silent Regurgitation
Because regurgitation can be silent, get into the habit of glancing at the mouth area each time you reposition during CPR or rescue breathing, rather than assuming the airway remains clear just because nothing has happened so far. A gurgling sound during rescue breaths is a warning sign that fluid has entered the airway and needs to be cleared.
A Distended Stomach
Rescue breaths given too forcefully or too quickly can push air into the stomach instead of the lungs, causing it to distend. Do not press on a distended stomach to try to relieve it, since this significantly increases the risk of triggering vomiting or regurgitation with the airway less protected than it would be if you simply continued with correctly paced breaths and let the body manage the excess air itself.
Why the Recovery Position Exists at All
This entire risk is exactly why the recovery position matters so much for any unconscious but breathing patient. Lying on the side, with the head tilted appropriately, uses gravity to keep the airway clear of both vomit and the person’s own relaxed tongue, without needing you to watch constantly for a problem to develop.
Frequently Asked Questions
What is the difference between vomiting and regurgitation?
Vomiting is active and noisy, involving obvious muscular effort. Regurgitation is a quiet, passive flow of stomach contents that can happen in an unconscious person without any obvious sign.
What should you do if a patient vomits during CPR?
Turn them onto their side immediately, clear the airway, then reassess and resume CPR if it is still needed.
Should you press on a patient’s stomach if it looks distended during rescue breathing?
No. This can trigger vomiting or regurgitation. Instead, focus on giving breaths at the correct pace and volume.
References and Last Reviewed
- American Heart Association, Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care
- International Liaison Committee on Resuscitation (ILCOR), Consensus on Science and Treatment Recommendations
Jurisdiction: General first aid guidance, internationally applicable.
Last technically reviewed: September 2026
Reviewed by: EHS Guidelines Editorial Team
This article is educational and does not replace accredited first aid training or professional medical care. In a real emergency, call your local emergency number immediately.
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- The Secondary Survey: A Head to Toe Patient Examination
- Vital Signs Observations: Pulse, Breathing, Conscious State and Skin
- First Aid for Wounds: A Wide-ranging Guide
- First Aid: Bleeding Type Treatment and Precaution
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