A middle-aged man is found unresponsive, apneic, and pulseless. What should be done first?

The correct action in this scenario is to begin CPR starting with chest compressions, apply the AED, and request backup.

This approach aligns with the established guidelines for managing unresponsive, apneic, and pulseless patients. CPR is crucial because it helps maintain blood flow to vital organs, specifically the brain and heart, during a cardiac arrest. The immediate initiation of chest compressions is vital, as it increases the chances of survival by promoting circulation even before advanced help arrives.

Simultaneously, applying an AED is a critical step that can potentially restore a normal heart rhythm. It is recommended to make use of the AED as soon as it becomes available, but initiating CPR takes priority, as immediate compressions can make a significant difference.

Requesting backup ensures that additional help is on the way, which is essential for a more comprehensive response to the emergency situation. This combined approach of performing CPR while preparing to use the AED and ensuring that more medical assistance is on the way maximizes the chances of a positive outcome for the patient.

While initiating CPR with a specific compression to ventilation ratio is important in certain circumstances, in a case where the patient is unresponsive, apneic, and pulseless, immediate chest compressions without delay is