Abstract：Objective To investigate the value of R-wave peak time(RWPT) in lead Ⅱ and the method of initial R-wave of QRS complex in lead aVR in the differential diagnosis of wide QRS complex tachycardia(WCT). Methods Retrospective analysis was performed on 132 patients diagnosed with ventricular tachycardia(VT) and 33 cases with supraventricular tachycardia(SVT). We analyzed the characteristics of electrocardiogram(ECG) morphology, measured RWPT in lead Ⅱ and observed whether the initial wave in lead aVR was R-wave or not. In this method, the sensitivity, specificity, accuracy, positive predictive value and negative predictive value in the diagnosis of VT were measured. Then we compared the results with those in the diagnostic method of RWPT.Results When RWPT combined with the initial Rwave of QRS complex in lead aVR were applied in diagnosing VT, the sensitivity, specificity, accuracy, positive predictive value and negative predictive value was 96.97%, 72.73%, 92.12%, 93.43% and 85.71%, respectively. Compared with the results in RWPT method, the sensitivity, accuracy and negative predictive value all significantly increased(P＜0.05). Conclusion When RWPT combined with the initial Rwave of QRS complex in lead aVR is applied in the differential diagnosis of WCT, it has high sensitivity and specificity. Due to its simplicity, convenience and rapidity, the method is more suitable for the differential diagnosis of WCT in emergency.
魏炜. QRS波第一峰时限联合aVR单导联法对宽QRS波心动过速的鉴别诊断价值[J]. 实用心电学杂志, 2016, 25(2): 109-111.
WEI Wei. Clinical value of Rwave peak time combined with aVR single lead in differential diagnosis of wide QRS complex tachycardia. JOURNAL OF PRACTICAL ELECTROCARDIOLOGY, 2016, 25(2): 109-111.
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