通过胸部X光片明确不适当的模式切换。
Inappropriate mode switching clarified by using a chest radiograph.
作者信息
Marino Brian, Jaiswal Abhishek, Goldbarg Seth
机构信息
Division of Cardiology, Department of Internal Medicine, New York Hospital Queens/Cornell University Medical College, WA 200, 56-45 Main Street, Flushing, NY 11355, USA.
Department of Cardiology, Tulane University Heart and Vascular Institute, Tulane School of Medicine, New Orleans, LA 70112, USA.
出版信息
J Arrhythm. 2015 Aug;31(4):246-8. doi: 10.1016/j.joa.2015.01.001. Epub 2015 Feb 14.
An 80-year-old woman with a history of paroxysmal atrial fibrillation and atrioventricular node disease status post-dual chamber pacemaker placement was noted to have abnormal pacing episodes during a percutaneous coronary intervention. Pacemaker interrogation revealed a high number of short duration mode switching episodes. Representative electrograms demonstrated high frequency nonphysiologic recordings predominantly in the atrial lead. Intrinsic pacemaker malfunction was excluded. A chest radiograph showed excess atrial and ventricular lead slack in the right ventricular inflow. It was suspected that lead-lead interaction resulted in artifacts and oversensing, causing frequent short episodes of inappropriate mode switching.
一名80岁女性，有阵发性心房颤动病史及双腔起搏器植入术后房室结疾病史，在经皮冠状动脉介入治疗期间出现异常起搏事件。起搏器程控显示有大量短持续时间的模式转换事件。代表性心电图显示主要在心房导联出现高频非生理性记录。排除了固有起搏器故障。胸部X线片显示右心室流入道心房和心室导线松弛过多。怀疑导线间相互作用导致伪差和过度感知，引起频繁的短时间不适当模式转换发作。
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