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室性早博是临床上常见的一种心律失常，多种病因均可引起。冠心病和扩张型心肌病是室性早搏的常见原因，但二者的病因及发病机制不同，对心肌造成的病理损害也不同。而测定心脏不应期来观察两种不同病因所引起的室性早搏是否有异常变化，目前国内文献尚未见报道。我们用食道心?
Ventricular premature beats are clinically common arrhythmias, a variety of causes can be caused. Coronary heart disease and dilated cardiomyopathy are common causes of premature ventricular contractions, but the etiology and pathogenesis of the two are different, the pathological damage caused by the myocardium is also different. The determination of cardiac refractory period to observe two different causes of ventricular premature beats caused by abnormal changes, the current domestic literature has not been reported. We use esophageal heart?