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经临床及心电图证实确有阵发性室上性心动过速(PSVT)发作史的8例病人,男5例,女3例,年龄18～73岁。经体检、胸片及二维超声心动图(有3例未作)等检查未发现心血管病的临床证据。按常规方法施行食管心房调搏(TEAF),使用仪器为苏州东方电子仪器厂XD—2A型心脏电生理诊疗仪。测定用药前心率(HR),窦房结恢复时间、房室传导功能、房室结不应期。并重复S_1S_1连续递增电刺激及S_1S_2程序扫描,若未能促发PSVT,则在心电图连续记录下以
The clinical and electrocardiographic evidence confirmed the onset of paroxysmal supraventricular tachycardia (PSVT) in 8 patients, 5 males and 3 females, aged 18 to 73 years. After physical examination, chest X-ray and two-dimensional echocardiography (3 did not make) and other tests found no clinical evidence of cardiovascular disease. Esophageal atrial pacing (TEAF) was performed according to the conventional method. The instrument used was XD-2A cardiac electrophysiology treatment instrument at Suzhou Oriental Electronic Instrument Factory. Heart rate before treatment (HR), sinus node recovery time, atrioventricular conduction function, atrioventricular node refractory period. And repeated S_1S_1 continuous increase in electrical stimulation and S_1S_2 program scan, if failed to trigger PSVT, continuous recording in the ECG