Asynchronous electrical resuscitation is used in patients who experience ventricular fibrillation or normal cardiac arrest, so asynchronous electrical resuscitation is also called electrical defibrillation. Under normal conditions, the heartbeat is controlled by the sinus node, which sends electrical signals to cause synchronized contraction activity throughout the heart. In pathological state, the sinus node cannot send electrical signals or other abnormal parts appear electrical signals, thus causing the uncoordinated excitation of the heart resulting in pathological state, if this pathological state can appear the regular beating of the ventricles, you can choose synchronous electrical resuscitation for treatment; if this pathological state is more serious, the heart has lost the normal regular beating, you need to choose non-synchronous electrical resuscitation for treatment, that is If this pathology is more severe and the heart has already lost its normal regularity, it is necessary to choose non-synchronous electrical resuscitation, that is, to induce the heart to return to a normal state by giving a strong electric current.