实验性香猪心肌缺血及心电监测

Experimental Myocardial Ischemia And Its Electrocardiographec Monitoring in Xiang Pigs

本文用香猪１１头，分别快速静脉注射２０、１０、５、２．５单位垂体后叶素以及生理盐水作对照，分别记录注射０、１、３、５、１０ｍｉｎⅡ导心电图。结果表明垂体后叶素可致香猪心肌严重供血不足，反映心肌缺血心电图变化典型明显，表现心率变慢，Ｓ—Ｔ段下移，Ｔ波双相继而倒置，１０ｍｉｎ后心电恢复正常。Ｓ—Ｔ段下移程度，Ｔ波倒置深度与剂量相关。

xiang pigs were divided into 5 groups.The pigs in groups 1,2,3 and 4were injicted intravenously with 20u,10u,5u and 2.5u pituitrin,respectively.The ECG wasrecordedby means of a model-362 polygraph made in Japan at 0’,1’,3’,5’,and 10’after injection.The results showed that the myocardial ischemia of ECG caused by pituitrinwas of typical and regular pattern The major changes included slowed heart rate,S-Tsegment depression,depressed T wave, biphasic T wave and inverted T wave.The extent ofS T segment depression and depth of inverted T wave were related to the doses of pituitrin.The changes in ECG were the most obvious 5m in after injection.The ECG returned tonormal 10 min after iniection.The pigs in the fifth group as a control were injected with0.9% NaCl solution and their ECG showed no changes.