ICD也是一种植入性心律装置,其由两部分组成:心脏起搏部分+心室除颤部分。心脏起搏部分相当于VV(I单腔ICD)和DDD起搏器(双腔ICD)。而心室除颤系统则不在上述范围。ICD感知系统的功能十分重要,感知系统出现故障时,将能抑制ICD发放救治病人生命的电除颤脉冲或引起ICD的误放电,给病人造成剧痛,引起恐惧及抑郁症状。 The ICD is also an implantable cardiac rhythm device that consists of two parts: the cardiac pacing part + the ventricular defibrillation part. The pacemaker part is equivalent to VV (I single chamber ICD) and DDD pacemaker (double chamber ICD). The ventricular defibrillation system is not in the above range. The function of the ICD sensing system is very important. When the sensing system fails, it will inhibit the ICD from delivering defibrillation pulses to the patient’s life or causing misdischarges of the ICD, causing severe pain to the patient and causing fear and depression.