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3例健康疗养飞行员,体格检查无异常发现,心电图检查示窦性心动过缓,为测定窦房结功能行食管心房调搏术而发现房室结双径路传导。 1 病例报告 例1男性,32岁,心率55次/min,采用自主窦性心律程序刺激法(RS_2)。当RS_2为250ms时,房室传导时间(SR)为240ms。当RS_2减为240ms时,S_2R突然延长至360MS,增量达120ms,致房室传导曲线中断,提示为房室结双径路传导。 例2男性,25岁,心率54次/min,食管心房调搏采用RS_2法。当RS_2为320ms时,S_2R为240ms。当
3 cases of health recuperation pilots, no abnormal physical examination found that ECG showed sinus bradycardia, sinus odometry for the determination of sino-atrial pacing and found atrioventricular node dual pathway conduction. 1 Case Report 1 male, 32 years old, heart rate 55 beats / min, using independent sinus rhythm stimulation (RS_2). When RS_2 is 250ms, the atrioventricular conduction time (SR) is 240ms. When RS_2 reduced to 240ms, S_2R suddenly extended to 360MS, an increase of 120ms, resulting in atrioventricular conduction curve interrupted, suggesting atrioventricular node dual pathway conduction. Example 2 male, 25 years old, heart rate 54 beats / min, esophageal atrial pacing using RS_2 method. When RS_2 is 320ms, S_2R is 240ms. when