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作者对连续收入冠心病监护单位的117例患者作15个导联心电图。3个附加导联都在V(?)同一水平上,分别位于腋后线(V_7)、肩胛中线(V_8)和肩胛中线与脊柱中间(V_9)。心肌梗死的确诊根据为病史(胸前剧痛持续半小时以上)加典型的12导联心电图(心肌损伤图形或异常Q波)及/或血清酶浓度特征性改变(无其他原因的谷草转氨酶、乳酸脱氢酶或肌酸磷酸激酶浓度增高和降低)。对20名正常人作15导联心电图,以确定V_7、V_8和V_9的正常图形。20名正常人中没有1人的附加胸导联心电图显示持续
The authors made 15 lead electrocardiograms of 117 patients in continuous-income CHD units. The three additional leads were all at the same level of V (?), Located in the posterior axillary line (V_7), medial scapular line (V_8) and midline of the scapula and in the middle of the spine (V_9). Myocardial infarction was diagnosed on the basis of a history of (chest pain lasting more than half an hour) plus a typical 12-lead electrocardiogram (myocardial injury pattern or abnormal Q wave) and / or characteristic changes in serum enzyme concentrations (aspartate aminotransferase, Lactate dehydrogenase or creatine phosphokinase concentration increased and decreased). Fifteen lead electrocardiograms were taken on 20 normal subjects to determine the normal pattern of V_7, V_8 and V_9. An additional chest lead electrocardiogram of 1 in 20 normal subjects showed persistence