Asystole and Cardiac arrest

Asystole noun - Absence of systole; failure of the ventricles of the heart to contract (usually caused by ventricular fibrillation) with consequent absence of the heart beat leading to oxygen lack and eventually to death.

Cardiac arrest is a synonym for asystole. In some cases you can use "Cardiac arrest" instead a noun "Asystole".

Cardiac arrest noun - Absence of systole; failure of the ventricles of the heart to contract (usually caused by ventricular fibrillation) with consequent absence of the heart beat leading to oxygen lack and eventually to death.

Asystole is a synonym for cardiac arrest in heart attack topic. You can use "Asystole" instead a noun phrase "Cardiac arrest".