Refers to when someone's heart stops working This means the person is dead and if there is any hope, rescuers will attempt CPR and ALS methods to restore life
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
—The sudden cessation of the heart's pumping action, possibly due to a heart attack, respiratory arrest, electrical shock, extreme cold, blood loss, drug overdose, or a severe allergic reaction
The absence of mechanical function of the heart (when the heart stops beating or beat so abnormally as to not effectively pump) This results in the loss of arterial blood pressure and irreversible brain damage and death if circulation of the blood is not restored within minutes