A patient who has overdosed and is unresponsive suddenly vomits. What should you do?

In the event of a patient who has overdosed and is unresponsive, the priority is to ensure their airway is protected and to prevent aspiration, which can occur if they vomit while lying on their back. Turning the patient onto their side is the recommended action because this position helps to keep the airway clear and allows any vomit to drain out of the mouth, minimizing the risk of choking or aspiration into the lungs.

This position, known as the recovery position, is particularly important in instances of unresponsiveness, as it can facilitate better oxygenation and reduce the likelihood of airway obstruction. It also helps in monitoring the patient's condition while providing care.

Choosing to place the patient in a supine position would increase the risk of aspiration if they vomit, and administering oxygen immediately although helpful for managing breathing issues, does not address the immediate concern of airway protection. Beginning chest compressions is only indicated if there are signs of cardiac arrest, which is not specified in the scenario of an unresponsive patient who has vomited after an overdose.