另外三个心电图胸导联（V7、V8和V9）在急性心肌梗死诊断中的应用价值。
Usefulness of three additional electrocardiographic chest leads (V7, V8, and V9) in the diagnosis of acute myocardial infarction.
作者信息
Melendez L J, Jones D T, Salcedo J R
出版信息
Can Med Assoc J. 1978 Oct 7;119(7):745-8.
Additional electrocardiocardiographic chest leads (V7, V8, and V9) were used in 117 persons consecutively admitted to a coronary care unit. Among the 46 (39%) with a proven acute myocardial infarction the electrocardiograms (ECGs) of 9 (20%) showed ST-segment elevation or abnormal Q-waves, or both, in the three additional leads. In six of the nine, such changes were associated with signs of anterolateral or inferior wall infarction (in three each) on the standard 12-lead ECG, but in the other three (7% of the 46) electrocardiographic changes diagnostic of acute myocardial infarction were found only on the additional chest leads; the last three had characteristic changes in serum enzyme concentrations. This study showed that additional chest leads are helpful in detecting myocardial injury of necrosis in areas of the heart not properly reflected on the standard 12-lead ECG.
117名连续入住冠心病监护病房的患者使用了额外的心电图胸导联（V7、V8和V9）。在46例（39%）经证实为急性心肌梗死的患者中，9例（20%）的心电图在这三个额外导联中显示ST段抬高或异常Q波，或两者皆有。在这9例中的6例中，此类变化与标准12导联心电图上前侧壁或下壁梗死的征象相关（各3例），但在另外3例中（46例中的7%），仅在额外的胸导联上发现了诊断急性心肌梗死的心电图变化；最后3例患者血清酶浓度有特征性变化。本研究表明，额外的胸导联有助于检测标准12导联心电图未能充分反映的心脏区域的心肌损伤或坏死。
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