[答]肺心病并发心律失常并非少见。国内报告约为17～40%,以室上性心律失常较为多见。引起心律失常的原因是由于长期缺氧;右房室压增高;心肌本身的病变;电解质紊乱(如高血K~+或低血K~+);交感神经兴奋性增高;内源性儿茶酚胺增多以及洋地黄应用后之中毒因素所引起。部分病人心律失常可能由于并发冠心病所致。 [A] Pulmonary heart disease complicated with arrhythmia is not uncommon. Domestic reports of about 17 to 40%, more common in supraventricular arrhythmias. The cause of arrhythmia is due to long-term hypoxia; right atrial pressure increase; myocardial lesions itself; electrolyte imbalance (such as high blood K ~ + or low blood K ~ +); sympathetic excitability increased; endogenous catecholamines increased And digitalis poisoning caused by factors. Some patients with arrhythmia may be due to complicated by coronary heart disease.