Cardiac arrest and Heart failure

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.

Heart failure and cardiac arrest are semantically related in heart attack topic. In some cases you can use "Heart failure" instead a noun phrase "Cardiac arrest".

Heart failure noun - Inability of the heart to pump enough blood to sustain normal bodily functions.

Cardiac arrest and heart failure are semantically related in heart attack topic. You can use "Cardiac arrest" instead a noun phrase "Heart failure".