As a medical professional with expertise in cardiology, I can explain the function of a defibrillator in both English and Chinese. English Answer: A defibrillator is a medical device that delivers an electric shock to the heart during a life-threatening arrhythmia, such as ventricular fibrillation or pulseless ventricular tachycardia. The primary purpose of this device is to re-establish normal heart rhythm by terminating the chaotic electrical impulses that are causing the arrhythmia. When the heart is in a state of fibrillation, its muscle fibers are quivering in a disorganized manner, which prevents the heart from pumping blood effectively. The electric shock from the defibrillator synchronizes the heart's electrical activity, allowing it to contract and relax in a coordinated, rhythmic manner. This can be a life-saving intervention, especially in cases of sudden cardiac arrest. Chinese Translation: 心脏除颤器是一种医疗设备，用于在危及生命的心律失常（例如室颤或无脉搏的室性心动过速）期间向心脏提供电击。该设备的主要目的是通过终止导致心律失常的混乱电脉冲来重新建立正常的心脏节律。当心脏处于颤动状态时，其肌肉纤维以无序的方式颤抖，这阻碍了心脏有效地泵血。来自除颤器的电击同步心脏的电活动，使其能够以协调、有节奏的方式收缩和放松。这可能是一种救命的干预，特别是在心脏骤停的情况下。 read more >>

An ICD is a battery-powered device placed under the skin that keeps track of your heart rate. Thin wires connect the ICD to your heart. If an abnormal heart rhythm is detected the device will deliver an electric shock to restore a normal heartbeat if your heart is beating chaotically and much too fast.read more >>