新西兰兔实验性高前壁心肌坏死的Wilson和头胸导联的定位诊断

目的：比较新西兰兔实验性高前壁心肌坏死Wilson和头胸（head-chest,HC)导联的定位诊断。方法：采用冰乙酸化学腐蚀法复制高前壁心肌坏死的动物模型30只，记录心表心电图加以确认，再记录胸痛体表70点的ECG。根据病理性Q波出现和分布范围的不同，判断两种导联定位诊断的差异。结果：Wilson导联在胸痛部区域都记录到病理性Q波，而HC导联仅在胸部小范围内记录到病理性Q波，同一测试点两种导联记录到的病理性Q波的例数，经配对计数资料的x^2检验有显性差异（P＜0．05），同一试点H导联病Q波阳性率显少于Wilson导联。结论：Wilson导联记录到病理Q波的范围过于广泛，而HC导联则相对集中，与心肌坏死区域相当，故HC导联对于高前壁心肌坏死定位诊断的价值优于Wilson导联。

Localization of acute experimental myocardial necrosis in high anterior wall by Wilson and head-chest lead

Objective: Compare the localization of acute experimental myocardial necrosis in high anterior wall by Wilson and head-chest (HC) lead. Methods: Acute myocardial necrosis of 30 New-Zealand rabbits was reproduced by the quantitative chemical injury with glacial acetic acid and corroborated by pericardial ECG. ECG at 70 points on chest and back surface were recorded by Wilson lead and HC lead simultaneously. The difference between two leads to localize the necrosis was judged by the emergence and distribution of pathologic Q wave. Results: Pathologic Q wave appears at many points in broad expanse of the surface of back and chest by Wilson lead. while at a few points on the surface of anterior part of chest in HC lead. X2 verification of paired enumerated information shows their significant difference(P<0. 05) see also tablel. Conclusion:Distribution zone of pathologic Q wave recorded by Wilson lead is much wider than that by HC lead. HC lead. But distribution zone of pathologic Q wave recorded by HC lead is more concentration, so for necrosis localization in high anterior wall HC lead possesses more value.