对心电图V_（3R～8R）诊断急性下壁心肌梗死合并右室梗死的评价

ELECTROCARDIOGRAPHIC V_(3R) TO V_(8R) IN THE DIAGNOSIS OF RIGHT VENTRICULAR INFARCTION COMPLICATING ACUTE INFERIOR MYOCARDIAL INFARCTION

应用平衡法核素心室造影在７２例患者中评价心电图Ｖ（３Ｒ～８Ｒ）单导联ＳＴ段抬高≥１ｍｍ诊断急性下壁心肌梗死合并右室梗死的价值。结果表明，右胸外侧导联Ｖ（５Ｒ～８Ｒ）高于右胸中部导联Ｖ（３Ｒ）、Ｖ（４Ｒ），其中以Ｖ（６Ｒ）最准确。

The value of ST segment elevation≥1mm in individual right precordial leads V(3R) to V(8R) in the diagnosis of right ventricular infarction (RVI) complicating acute inferior myocardial infarction was evaluated in 72 patients. Multigated equilibrium radionuclide ventriculography was performed in 30°right anterior oblique projection as well as 30° and 70° left anterior oblique projections to detect RVI and patients were grouped according to the presence or absence of it. Among them RVI was present in 28 patients. ECGs were obtained within 10 hours of the onset of symptoms in each patient. The result indicates that the six individual right precordial leads are all diagnostically reliable. However, the diagnocstic accuracy was higher for lateral leads (V(5R) to V(8R))than for medial leads (V(3R), V(4R)). In particular, V(6R) appears to be the most accurate one.(Department of Cardiovascular Xuan Wu Hospital, Beijing)