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作者对15(男12、女3)例健康成人志愿者(年龄20～36岁)进行电生理测试,以确定经食道心房调搏的最佳方式.受试者取仰卧位,经口向食道内插入6Fr六极导管,少数改用6Fr四极导管或10Fr双极导管.电极与心电图仪V导联相连,记录单极心房电图.调搏周期500ms,确定1∶1房室调搏所需的最佳条件.距门齿35.4±1.6cm处单极心房电图呈双向,振幅最大(0.67±0.34mV,n=10).该距离与受试者身高、体重的相关性很差.以该处为中心进行双极电刺激或于该处进行单极电刺激所需阈强度最
The author of 15 (male 12, female 3) cases of healthy adult volunteers (aged 20 to 36 years) electrophysiological tests to determine the best way transesophageal atrial pacing subjects were supine, oral to the esophagus Inserted 6Fr six catheter, a small number of 6Fr quadruode catheter or 10Fr bipolar catheter. Electrocardiograph and ECG lead connected to record monopolar atrial electrocautery. Pacemaker cycle 500ms, to determine the 1: 1 atrioventricular pacing The optimal conditions were as follows: the unipolar atrial electrogram was 35.2 ± 1.6 cm from the incisor with a maximum amplitude of 0.67 ± 0.34 mV (n = 10), which was not correlated with the height and weight of the subjects. The threshold intensity required for bipolar electrical stimulation at the center or unipolar electrical stimulation there is the highest