心律失常在临床非常多见,但多数病例与生命预后关系不大,无需治疗。但原发疾病是缺血性心脏病、心肌病等的心律失常,其心功能显著恶化,如不紧急治疗则不能维持生命。所谓危险的心律失常是指不及时治疗可导致死亡的心律失常及其先兆者。根据心律失常重症程度和治疗的必要性分类如下表。 Arrhythmia is very common in clinical, but most cases have little to do with the prognosis of life, without treatment. However, the primary disease is arrhythmia such as ischemic heart disease and cardiomyopathy, and its cardiac function is significantly deteriorated. If it is not urgently treated, it can not sustain life. The so-called dangerous arrhythmia refers to the lack of timely treatment of arrhythmias can cause death and its precursors. According to the severity of arrhythmia and the need for treatment classification as follows.