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观察对象为10例(男7、女3)日趋发作频繁的室上性心动过速(SVT)患者,年龄22～70(平均42±15)岁。其中1例连续发作4日,4例为每周、5例为每月发作一次。5例诊断预激综合征。9例无明显器质性心脏病,1例心脏扩大,心功能Ⅱ级。检查前停用抗心律失常药物至少5个半衰期,采用食管心房调搏术进行基础电生理测试。应用频率递增与程序早搏刺激法诱发与终止SVT,测量诱发窗口房室传导
The subjects were 10 (male 7, female 3) patients with an increased prevalence of supraventricular tachycardia (SVT), ranging in age from 22 to 70 (mean, 42 ± 15) years. One case of continuous attack on the 4th, 4 cases for each week, 5 cases of seizures once a month. 5 cases of pre-excitation syndrome diagnosis. Nine cases had no organic disease, one case had enlarged heart and grade Ⅱ heart function. At least 5 half-lives of at least 5 anti-arrhythmic drugs were discontinued prior to the test and esophageal atrial pacing was used to perform basic electrophysiological tests. The application of frequency and premature beat stimulation stimulation and termination of SVT, induced evoked window atrioventricular conduction