Cardiac shock is a low energy blunt force applied to the precordial region of the heart that results in predominantly electrophysiologic disturbances. The vast majority of cardiac shock deaths occur after blunt force is applied to the precordial region of the chest by an object such as a ball, bat or fist, and serious arrhythmias, including ectopic ventricular rhythms and ventricular tachycardia, occur immediately after the injury. They usually return to normal within a short period of time. In severe cases, they eventually transform into ventricular fibrillation or die from ventricular fibrillation immediately after the injury. If the patient already has a persistent or permanent cardiac shock, it can be treated with a combination of anticoagulation and ventricular rate control, i.e., it can be done by subcutaneous injection of low molecular heparin, and then it is recommended that the patient take oral medications such as bisoprolol or metoprolol to slow down the heart rate. Patients with cardiac shock should be treated under the guidance of a professional doctor, and should not use medication on their own to avoid adverse effects.