How to tell if these are signs of cardiac arrest?

Cardiac arrest: Cardiac arrest means the heart stops. Unfortunately, cardiac arrest is too often the first "symptom" of coronary artery disease. Think James Gandolfini, for example.

Cardiac arrest: If you die suddenly you probably have cardiac arrest. You won't know it however. When you have cardiac arrest your blood flow loss means you'll pass out in a few seconds. Should you feel suddenly like you're about to pass out best to call out for help and hope CPR is available.