aVF导联低电压预测冠状动脉多支病变的价值

目的 探讨aVF导联低电压对预测冠状动脉多支病变的价值。方法 回顾性分析225例冠心病患者的心电图与冠状动脉造影资料，选取aVF导联低电压作为观测指标。结果 aVF导联低电压对不同冠状动脉病变范围有一定的鉴别价值。多支病变时阳性率明显增高，在排除影响因素前后分别为54．41％和56．60％，束支传导阻滞、心室肥大等对指标的判断影响不大，其预测的敏感性、特异性和准确性在排除影响因素前后分别为54．41％、68．15％、64．00％和56．60％、69．78％、66．15％。结论 aVF导联低电压对预测冠状动脉多支病变具有一定价值。

Low voltage of aVF lead for predicting on of multiple-vessel lesions of coronary artery

Objective To explore the value of the low voltage of aVF lead for predicting the multiple vessel lesions of coronary artery.Methods Electrocardiogram(ECG) and coronary angiography(CAG) of 225 patients with coronary heart disease(CHD)were retrospectively analyzed.The low voltage of aVF lead was taken as variable.Results The low voltage of aVF lead was valuable in distinguishing the lesion scopes of the coronary artery.The positive rate was increased when multiple vessel lesion occurred and it accounted for 54.41% and 56.60% before and after excluding the ECG confounders,respectively.The ECG confounders such as bundle branch block and ventricular hypertrophy did little harm to the results.The sensitivity,the specificity and the accuracy of the aVF accounted for 54.41%,68.15%,64.00% and 56.60%,69.78%,66.15% before and after excluding the ECG confounders,respectively.Conclusion The low voltage of aVF lead helps to identify the multiple vessel lesion of coronary artery.