患有室性早搏、束支传导阻滞和左前分支阻滞的成年人在II导联的R波峰时间。

R-Wave Peak Time at Lead II in Adults With Ventricular Premature Beats, Bundle Branch Block and Left Anterior Fascicular Block.

作者信息

Yu Min, Chen Tingting, Hu Shuang, Zou Shan, Wang Cantian, Zeng Chujuan, Chen Weijie, Tan Xuerui

机构信息

Department of Cardiology, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China.

出版信息

Am J Med Sci. 2018 Jan;355(1):44-47. doi: 10.1016/j.amjms.2017.08.017. Epub 2017 Sep 1.

DOI:10.1016/j.amjms.2017.08.017

PMID:29289261

Abstract

BACKGROUND

Recently, the R-wave peak time (RWPT) at lead II was reported to be a helpful and simple tool for differentiating wide QRS complex tachycardias with a RWPT ≥ 50ms for ventricular tachycardia diagnosis. Our previous study showed that the duration of RWPT at lead II in adults was ≈29ms. However, the effects of ventricular premature beats (VPBs), bundle branch block (BBB) or left anterior fascicular block (LAFB) on RWPT at lead II remain unknown.

METHODS

The study was conducted in the First Affiliated Hospital of Shantou University Medical College in Southern China. Adults with VPBs, BBB or LAFB were included. RWPT at lead II was determined.

RESULTS

Compared with the control groups, the right BBB, LAFB, RWPT were longer in groups with left BBB and VPBs. Compared with the group with left BBB, the group with VPBs had a significantly longer RWPT at lead II (54.20 ± 18.52 versus 84.76 ± 16.38ms, P < 0.01).

CONCLUSION

Our study showed that there is a significant difference in the RWPT at lead II between groups with left BBB, ventricular premature beat, right BBB and LAFB. A RWPT of 50ms may be optimal to differentiate between ventricular tachycardia and supraventricular tachycardia with right left BBB and LAFB, but not with left BBB.

摘要

背景

最近，有报道称Ⅱ导联的R波峰时间（RWPT）是一种有助于诊断宽QRS波群心动过速的简单工具，当RWPT≥50ms时有助于室性心动过速的诊断。我们之前的研究表明，成年人Ⅱ导联的RWPT持续时间约为29ms。然而，室性早搏（VPB）、束支传导阻滞（BBB）或左前分支传导阻滞（LAFB）对Ⅱ导联RWPT的影响仍不清楚。