What is the first action to take if you witness a cardiac arrest?

When you witness a cardiac arrest, the first action to take is to ensure that emergency services are notified immediately. This is crucial because the chances of survival decrease significantly with each passing minute during a cardiac arrest event. Calling emergency services alerts ambulance personnel to the situation, allowing them to mobilize and arrive to provide advanced care as soon as possible.

While checking for breathing, starting chest compressions, and using an AED are vital components of the response to cardiac arrest, they should be performed promptly after ensuring that help is on the way. Once emergency services are called, the responder can then proceed to check for breathing and begin chest compressions or use an AED if available. This prompt alerting of emergency services lays the groundwork for comprehensive care and optimal patient outcomes.