Left bundle branch pacing (LBBP) has recently emerged as a novel physiological pacing technique with a paced morphology of a pseudoright bundle branch block (RBBB). We herein present a 63-year-old man with a high-degree atrioventricular block and complete RBBB, whose intrinsic QRS duration and terminal R' wave duration in V1 were significantly shortened after LBBP and further shortened with the increase in output.

中文翻译：

---

左束支起搏缩短了右束支传导阻滞的 QRS 时限

左束支起搏 (LBBP) 最近作为一种新的生理起搏技术出现，具有伪右束支传导阻滞 (RBBB) 的起搏形态。我们在此介绍了一名高度房室传导阻滞和完全性 RBBB 的 63 岁男性，其内在 QRS 持续时间和 V1 终末 R' 波持续时间在 LBBP 后显着缩短，并随着输出的增加而进一步缩短。