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经临床、心电图与食管调搏检查,选择病窦组8例(男5,女3),平均年龄49岁;窦缓组8例(男5,女3),平均年龄33岁;对照组10例(男4,女6),平均年龄37岁。检查前3天,停用所有心脏活性药物。采用XD-Ⅱ型多功能心脏程控刺激仪,经食管调搏测定窦房结恢复时间(SNRT)、校正SNRT(CSNRT)、窦房传导时间(SACT)、房室结有效不应期(AVN_(ERP))、房室结相对不应期(AVN_(RRP))。测量方法与通用者相同。随后给予加有10%葡萄糖20ml的氮茶碱0.25g,静注10分钟。于静注后半小时内,
Eight patients (male 5, female 3) with sinus dystrophy group were selected, and the average age was 49 years. Eight patients (5 males and 3 females) Example (male 4, female 6), the average age of 37 years old. 3 days before the test, disable all cardiologically active drugs. The SNRT, CSNRT, SACT and AVN_ (AVN_ (2)) were measured by esophageal pacing with XD-Ⅱ multifunctional heart program stimulator. ERP)), atrioventricular node refractory period (AVN_ (RRP)). The same measurement methods and general. Subsequently, 0.25 g of theophylline to which 20 ml of 10% glucose was added was administered intravenously for 10 minutes. Within half an hour after intravenous injection,