Cardiopulmonary arrest and Heart attack

Cardiopulmonary 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.

Heart attack and cardiopulmonary arrest are semantically related. In some cases you can use "Heart attack" instead a noun phrase "Cardiopulmonary arrest".

Heart attack noun - A sudden severe instance of abnormal heart function.

Cardiopulmonary arrest and heart attack are semantically related. You can use "Cardiopulmonary arrest" instead a noun phrase "Heart attack".