常见而需要治疗的心律失常可分为两大类:快速心律失常心动过速引起的症状不一,多数患者(尤其青年人),除偶有心悸外无其它症状,年老者常出现一些症状。气短常为最初的症状。冠心病、心瓣膜病或心绞痛患者可因持久性心动过速而诱发充血性心力衰竭或肺水肿,室率极快者可发生昏厥。起搏点位置愈低的患者愈易引起心 Common and need to be treated arrhythmia can be divided into two categories: tachyarrhythmia Tachycardia caused by different symptoms, most patients (especially young people), in addition to occasional heart palpitations and no other symptoms, the elderly often appear some symptoms. Shortness of breath is the initial symptom. Coronary heart disease, valvular heart disease or angina patients may be due to persistent tachycardia induced congestive heart failure or pulmonary edema, ventricular rate may occur syncope fast. The lower the pacemaker position, the more likely to cause the heart