伴有和不伴有持续性室性心动过速的束支传导阻滞患者QRS波群的频率分析

Frequency analysis of QRS complex with bundle branch block in patients with and without sustained ventricular tachycardia.

作者信息

Yoneda N, Itoh S, Fujimoto T, Kurogane H, Yoshida Y

机构信息

Department of Internal Medicine, National Sasayama Hospital, Japan.

出版信息

Jpn Circ J. 1993 Nov;57(11):1027-37. doi: 10.1253/jcj.57.1027.

DOI:10.1253/jcj.57.1027

PMID:8230680

Abstract

To distinguish patients with bundle branch block (BBB) and sustained ventricular tachycardia (s-VT) from patients with BBB but without s-VT, a frequency analysis of the QRS complex was performed in 71 patients. Frequency analysis of the QRS complex of patients with left bundle branch block (LBBB) showed that patients with s-VT had significantly larger areas and area ratios between 50 and 100 Hz in the X lead than patients without s-VT (area: -0.905 +/- 0.231 vs -1.195 +/- 0.286. area ratio: -0.783 +/- 0.230 vs -1.125 +/- 0.310; P < 0.05). The area and area ratios from 100 to 200 Hz in the Z lead were also larger in patients with s-VT. The highest predictive accuracy using the area ratio from 50 to 100 Hz in the X lead was 86%, with a sensitivity and specificity of 83% and 88%, respectively. In cases with LBBB, time domain analysis showed no significant difference between patients with s-VT and those without s-VT. Frequency analysis of the QRS complex may be useful for distinguishing LBBB patients with s-VT from those without s-VT.

摘要

为了区分患有束支传导阻滞（BBB）和持续性室性心动过速（s-VT）的患者与仅有BBB但无s-VT的患者，对71例患者的QRS波群进行了频率分析。左束支传导阻滞（LBBB）患者QRS波群的频率分析显示，与无s-VT的患者相比，有s-VT的患者在X导联50至100Hz之间的面积和面积比显著更大（面积：-0.905±0.231对-1.195±0.286；面积比：-0.783±0.230对-1.125±0.310；P<0.05）。有s-VT的患者在Z导联100至200Hz的面积和面积比也更大。使用X导联50至100Hz的面积比预测准确性最高为86%，敏感性和特异性分别为83%和88%。在LBBB病例中，时域分析显示有s-VT的患者与无s-VT的患者之间无显著差异。QRS波群的频率分析可能有助于区分有s-VT的LBBB患者和无s-VT的LBBB患者。