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食管电极心电图能较清楚地显示P波和P—Ta段,所以对心房梗塞的诊断有较大的帮助。现将笔者观察的二例报告如下。 检查方法 将JD-4730-20-15型四极食管电极导管由鼻腔插入食管约35cm,用带鳄鱼夹的导线与心电图机的V_1导联连接并记录。根据P波的形态和振幅调整食管电极的深度,以出现振幅最大的正向P波为准。
Esophageal electrode ECG can clearly show the P wave and P-Ta segment, so the diagnosis of atrial infarction have a greater help. Now I observe the two cases are as follows. Inspection method JD-4730-20-15 type four-pole esophageal electrode catheter nasal cavity inserted into the esophagus about 35cm, with a crocodile clip wire and electrocardiogram V_1 lead connection and record. Adjust the depth of the esophageal electrode according to the shape and amplitude of the P wave, whichever is the P wave with the largest amplitude.