Edenbrandt L, Pahlm O, Lyttkens K, Albrechtsson U
Department of Clinical Physiology, University of Lund, Sweden.
Clin Physiol. 1990 Nov;10(6):551-9. doi: 10.1111/j.1475-097x.1990.tb00447.x.
The vectorcardiogram (VCG) is commonly stated to be more sensitive than the 12-lead electrocardiogram (ECG) for the diagnosis of inferior myocardial infarction. However, a recent study indicated that VCG is not superior to ECG for this diagnosis. The purpose of this study was to compare the performance of VCG and ECG criteria and to indicate possible explanations for the disagreement between earlier studies. Accordingly, we studied 65 patients with inferior myocardial infarction verified by left ventriculography or 201-TI myocardial scintigraphy and 351 normal subjects. Sensitivity was 69% (45/65) and 43% (28/65) for the VCG and ECG criteria, respectively. This difference was highly significant (P less than 0.001). Among the normal subjects there were only three with false positive ECG. We conclude that both VCG and ECG criteria for the diagnosis of inferior myocardial infarction are highly specific and that VCG criteria have greater sensitivity than ECG criteria.
一般认为，向量心电图（VCG）在诊断下壁心肌梗死方面比12导联心电图（ECG）更敏感。然而，最近一项研究表明，VCG在该诊断方面并不优于ECG。本研究的目的是比较VCG和ECG标准的性能，并指出早期研究结果不一致的可能原因。因此，我们研究了65例经左心室造影或201-TI心肌闪烁显像证实为下壁心肌梗死的患者以及351例正常受试者。VCG和ECG标准的敏感性分别为69%（45/65）和43%（28/65）。这种差异具有高度显著性（P小于0.001）。在正常受试者中，只有3例ECG出现假阳性。我们得出结论，VCG和ECG诊断下壁心肌梗死的标准都具有高度特异性，且VCG标准的敏感性高于ECG标准。
