Clinical analysis of 87 cases of permanent cardiac pacemaker replacement
Zhao Zhanyong
Wu Xiangyu
Wang Qian
Li Ning
Zhang Jingmei
Li Zhizhong
Abstract：Objective To analyze the reasons of permanent cardiac pacemaker replacement and the treatment strategies for relevant complications.Methods Clinical data of 87 patients who had cardiac pacemaker replacement in Beijing Anzhen Hospital,Capital Medical University from June 2008 to July 2018 were retrospectivelyanalyzed.There were 48 cases of sick sinus syndrome,21 cases of atrioventricular heart-block and 18 cases ofatrial fibrillation with long interval.Results A total of 87 pacemaker pulse generators were replaced.Singlechamber pacemakers were replaced in 11 cases(12.6％).Dual chamber pacemakers were replaced in 76 cases(87.4％).Average service life of batteries was (96 ± 13) months (72-168 months).Expected life of battery wasachieved in 86 cases(98.9％).Pacemaker lead was replaced in 1 case due to the service life.Temporary pacingwas used during operation in 18 patients(20.7％) with pacemaker dependence.Before replacement,ventricularand atrial pacing thresholds [(1.1 ± 0.3),(1.2 ± 0.2) V] were significantly higher than the initial thresholds[(0.5 ± 0.2),(0.7 ± 0.2) V] (P ＜ 0.01).There were no significant differences of electrode impedance and R/Pwave amplitude between pacemaker replacement [(481 ± 102),(530 ± 113)Ω;(10.0 ± 1.1),(2.9 ± 1.3)mV] andinitial implantation[(470 ±98),(521 ± 100)Ω;(9.8 ± 1.4),(2.7 ± 1.7)mV] (P＞0.05).Conclusions Theprimary reason of pacemaker replacement is battery depletion.Most leads function well.Patients with pacemakerdependence need te.mporary pacing during operation to protect the heart.Appropriate strategies can minimizeperioperative complication.
Keywords：Cardiac pacemakerPermanentBattery depletionPacemaker replacement
Publication Date：2019-01-01
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：4( 25-28 )