经食道心房调博术中降低起搏阈值方法的探讨

A STUDY ON THE METHOD OF LOWERING THE PACING THRESHOLD IN TEAP

在为８０例患者行经食道心房调搏（Ｔｒａｎｓｅｓｏｐｈａｇｅａｌａｔｒｉａｌｐａｃｉｎｇ；ＴＥＡＰ）电生理检查术中，将用传统方法所测得的平均起搏阈值〔简称阈值（２７．６１±４．８）Ｖ〕作为基础对照，与分别用本文四步操作方法，即导管塑形；三个标志电极定位；诱导刺激；确定佳阈值所测得的平均阈值〔（１９．０±３．１）Ｖ〕相比较，结果显示：用本文四步法可以显著降低平均阈值（Ｐ＜０．０５）。随着阈值的下降，可使８４％（６７／８０）患者受检之苦明显减轻。

In a group of 80 cases receiving TEAP,a comparison was made between this 4-step and traditional TEAP. Our method is as follows:plasticky of TEAP electrode;three mapping electrode; in troducing stimulus; to ensure the optionalthreshold value. Threshold value (19.0±3.1)V,asa result of the 4-step method,was significantly lower than traditional value(27.61±4.8)V,(P<0.05).In 84%(67/80)patients,the discomfort (burning)were relieved,and the patients are morewilling to take the examination,Therefore,the 4-step method has a practical clinical value.