Pavri Behzad B
Thomas Jefferson University Hospital, 111 So 11(th) Street, Philadelphia, PA 19107, United States of America.
Thomas Jefferson University Hospital, 111 So 11(th) Street, Philadelphia, PA 19107, United States of America.
J Electrocardiol. 2020 Sep-Oct;62:138-141. doi: 10.1016/j.jelectrocard.2020.07.020. Epub 2020 Aug 3.
We report of case of an 87 year old lady with preexisting RBBB who developed LBBB after transcatheter aortic valve replacement (TAVR) for the treatment of severe aortic stenosis. She underwent pacemaker implantation, and subsequently developed high-grade atrioventricular (AV) block. Dual chamber pacing in the setting of complete heart block with a long programmed AV delay showed retrograde P waves. Ventricular pacing showed intact retrograde conduction. Shortening the programmed AV delay resulted in loss of retrograde P waves during dual chamber pacing. These findings are discussed.
我们报告了一例87岁女性患者，该患者既往有右束支传导阻滞（RBBB），在接受经导管主动脉瓣置换术（TAVR）治疗严重主动脉瓣狭窄后出现了左束支传导阻滞（LBBB）。她接受了起搏器植入，随后出现了高度房室传导阻滞。在完全性心脏传导阻滞且房室延迟程控较长的情况下进行双腔起搏时出现了逆行P波。心室起搏显示逆行传导完整。缩短房室延迟程控导致双腔起搏时逆行P波消失。对这些发现进行了讨论。
