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例一,患者男性,61岁,因前间壁心肌梗塞伴反复发作的持续性室速住院。入院前一周曾因短暂性完全性传导阻滞安置了永久性心脏起搏器。心电图示右束支阻滞伴左后分支阻滞与陈旧性前间壁心肌梗塞。起搏前为Ⅰ度AV阻滞。电生理试验:校正窦房结恢复时间正常(220毫秒),A-H间期正常(120毫秒),H-V间期延长(85毫秒)。
Example 1 A male patient, aged 61, was hospitalized for sustained ventricular tachycardia with recurrent anterior myocardial infarction. One week prior to admission, a permanent pacemaker was placed for transient complete conduction block. ECG shows right bundle branch block with left posterior branch block and old anterior wall myocardial infarction. Ⅰ degree AV pacing before pacing. Electrophysiological tests: Normal sinus node recovery time was normal (220 ms), A-H interval was normal (120 ms), and H-V interval was extended (85 ms).