What is an essential part of the first response to a person unresponsive due to a suspected cardiac arrest?

Calling emergency services immediately is a critical first step in responding to a person who is unresponsive and suspected of experiencing a cardiac arrest. This action ensures that professional medical help is on the way as quickly as possible. Cardiac arrest is life-threatening, and timely intervention is essential for improving the chances of survival.

While starting CPR immediately is also vital, it is important to ensure that emergency services are contacted right away the moment an individual is found unresponsive. This dual action of calling for help while providing immediate life support measures can significantly increase the outcome for the patient. Checking for breathing and administering first aid are relevant but secondary to securing professional assistance. The prompt initiation of emergency services allows trained responders to arrive with the equipment and skills needed to provide advanced care.