Long-term follow-up of right ventricular outflow tract septal pacing

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Author:
Xiaoqing Ren(Center of Arrhythmia Diagnosis and Treatment, Fuwai Hospital and Cardiovascular Institute, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 10003 7, China)
Shu Zhang(Center of Arrhythmia Diagnosis and Treatment, Fuwai Hospital and Cardiovascular Institute, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 10003 7, China)
Jielin Pu(Center of Arrhythmia Diagnosis and Treatment, Fuwai Hospital and Cardiovascular Institute, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 10003 7, China)
Fangzheng Wang(Center of Arrhythmia Diagnosis and Treatment, Fuwai Hospital and Cardiovascular Institute, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 10003 7, China)
Journal Title:
JOURNAL OF GERIATRIC CARDIOLOGY
Issue:
Volume 6, Issue 02, 2009
DOI:
Key Word:
Cardiac pacemaker;right ventricular outflow tract septurn;pacing threshold;complications

Abstract´╝Ü Objective Right ventricular outflow tract septum has become widely used us an electrode placement site. However, data concerning lead performances and complications for lead repositioning with this technique were scant. The purpose of this study was to observe long-term lead performances and complications of right ventricular outflow tract septal pacing and provide evidences for choosing an optimal electrode implantation site. Methods Thirty-six patients with septal active electrode implantation and 39 with apical passive electrode implantation were enrolled in this study. Pacing threshold, R-wave sensing, lead impedance, pacing QRS width and pacing-related compli-cations for two groups at implantation and follow-up were compared. Results There were higher pacing threshold and shorter pacing QRS width at implantation in the septal group compared with the apical group. There were no differences between the septal and the apical groups in pacing threshold, R-wave sensitivity, lead impedance and pace-related complication during a follow-up. Conclusions Right ventricular outflow tract septum could be used as a first choice for implantation site because it had long-term stable lead performances and no serious complications compared with the traditional apical site.

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