心房纤维性颤动(auricu1ar fibrillation,AF)是较常见的心律失常,尤其多见于风湿性心脏病、甲状腺机能亢进症、冠心病及高血压病,也可见于无明显原因可查的一些中、老年人。有报道70岁以上人群的发病率约为2～5%,男多于女。AF常可引起心慌、气促、头晕等临床症状,在活动状态下,心室率加快时更明显。文献指出,在循环中,心房酷似心室充盈辅助泵(booster pumper)。AF时因为失去了房室的同步,使心排血量下降10～15%。 Atrial fibrillation (AF) is a more common arrhythmia, especially common in rheumatic heart disease, hyperthyroidism, coronary heart disease and hypertension, can also be found in no obvious reason to check some of the elderly people. It is reported that the incidence of people over 70 years old is about 2 ~ 5%, more men than women. AF can often cause palpitation, shortness of breath, dizziness and other clinical symptoms, in the active state, the ventricular rate is more obvious when accelerated. The literature states that in the circulation, the atrium resembles a ventricular filling booster pumper. AF because of the loss of atrioventricular synchronization, cardiac output decreased by 10 to 15%.