QRS波第一峰时限诊断期前宽QRS波的价值

目的探讨应用QRS第一峰时限对期前宽QRS波的鉴别诊断价值。方法分别测量已确诊的106例房性早搏并室内差异传导和593例室性早搏心电图的Ⅱ导联QRS第一峰时限,以检测该指标的符合率。结果右心室早搏、左束型室内差异常传导、左心室早搏和右束支型室内差异传导诊断符合率分别为78.91%、35.00%、76.34%和96.51%。结论 QRS第一峰时限对右束支型室内差异传导与左心室早搏的鉴别诊断有重要的临床意义。应用同步12导联法可提高QRS第一峰时限诊断的准确性。

Diagnostic value of R-wave peaktime in the differential diagnosis of premature wide QRS wave

Objective To investigate the Clinical significance of R-wave peaktime in the differential diagnosis of premature wide QRS wave. Methods 106 patients with atrial premature beats companion intraventricular aberrant conduction and 593 patients with ventrieular premature beats （VPB） were examined by using R-wave peaktime, and then diagnosing correct rate were analyzed. Results The diagnosing correct rates of right ventricle premature beats , type left bundle branch block intraventricular aberrant conduction, left ventricle premature beats and type right bundle branch block intraventricular aberrant conduction were 78.91%, 33.00% , 78.34% and 96.51% respectively. Conclusion It has a very important clinical significance in the differential diagnosis of left ventricle premature beats and type right bundle branch block intraventricular aberrant conduction by using R-wave peaktime. The application of the method ofl 2-cynchronous-lead ECG system can improve the veracity of diagnostic test results.