Karjalainen Pasi P, Nammas Wail, Paana Tuomas
Heart Center, Satakunta Central Hospital, Sairaalantie 3, Pori, Finland.
Heart Center, Satakunta Central Hospital, Sairaalantie 3, Pori, Finland.
J Electrocardiol. 2016 Jul-Aug;49(4):554-6. doi: 10.1016/j.jelectrocard.2016.05.002. Epub 2016 May 13.
An 83-year-old lady had a DDDR pacemaker inserted in 1997 for symptomatic atrioventricular block. She underwent battery replacement in 2008. In 2010, she developed atrial fibrillation; the pacemaker was switched to VVIR mode. During the last 2years, ventricular lead threshold increased progressively. In December 2015, she presented for elective battery replacement. After successful battery replacement, the ventricular lead threshold remained high; therefore, we implanted a leadless transcatheter pacemaker, via femoral vein access, using a dedicated catheter delivery system. Electrical measurements at this stage revealed a pacing threshold of 0.28V at 0.24msec, and an impedance of 650Ω.
一位83岁女性于1997年因症状性房室传导阻滞植入DDDR起搏器。她在2008年进行了电池更换。2010年，她发生房颤；起搏器切换至VVIR模式。在过去2年中，心室导线阈值逐渐升高。2015年12月，她因择期电池更换就诊。成功更换电池后，心室导线阈值仍然很高；因此，我们通过股静脉入路，使用专用导管输送系统植入了无导线经导管起搏器。此时的电学测量显示起搏阈值在0.24毫秒时为0.28伏，阻抗为650Ω。
