Electrical characteristics of low atrial septum pacing compared with right atrial appendage pacing

被引:15
作者
de Voogt, WG
van Mechelen, R
van den Bos, AA
Scheffer, M
van Hemel, NM
Levine, PA
机构
[1] St Lucas Andreas Ziekenhuis, NL-1061 AE Amsterdam, Netherlands
[2] St Franciscus Gasthuis, Rotterdam, Netherlands
[3] Amphia Ziekenhuis, Breda, Netherlands
[4] St Clara Ziekenhuis Rotterdam, MCRZ, Rotterdam, Netherlands
[5] St Antonius Hosp Nieuwegein, Heart Lung Ctr Utrecht, Nieuwegein, Netherlands
[6] Loma Linda Univ, Sch Med, Loma Linda, CA 92350 USA
[7] St Jude Med CRMD, Loma Linda, CA 92350 USA
来源
EUROPACE | 2005年 / 7卷 / 01期
关键词
electrocardiography; heart septum; atrial septum pacing; pacing; artificial; far field R-wave; comparative study; electrodes; implanted;
D O I
10.1016/j.eupc.2004.10.001
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Aim The study was designed to compare the electrical characteristics of atrial, leads placed in the tow atrial. septum (LAS) with those placed in the right atrial appendage (RAA) associated with dual chamber pacing. Methods In 86 patients an active-fixation (St. Jude Medical's Tendril DX model 1388T) atrial lead was positioned in RAA and in 86 patients the same model atrial lead was placed in the LAS. Pacing thresholds, sensing thresholds, impedances and the Far Field paced R-Wave (FFRW) amplitude and timing were compared at 6 weeks and at 3 and 6 months. Results The pacing threshold did not differ between groups. Sensed voltage of the P-wave was higher in the LAS compared with the RAA at 3 and 6 months (P = 0.004). Impedance was higher in the LAS at 6 weeks and 3 months (P = 0.002) but this difference was no longer significant at 6 months (P = 0.05). The atrial. sensed FFRW voltage was significantly higher in the LAS position compared with the RAA at 3 and 6 months follow-up (P = 0.0002). FFRW voltage > 1 mV was seen in 87% of the RAA pacing group and in 94% of the LAS pacing group (P = ns). The time between the ventricular pacing stimulus and the sensed FFRW in the atrium, (V spike-FFRW) in RAA was longer than in LAS at all follow-up measurements (P = 0.006). Conclusions The electrical characteristics of LAS pacing makes this alternative position in the atrium safe and feasible. Though statistical differences were found in P-wave sensing (LAS higher voltage than in the RAA) and FFRW sensing was higher in the LAS compared with the RAA this did not interfere with the clinical applicability of the LAS as alternative pacing site. (C) 2004 The European Society of Cardiology. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:60 / 66
页数:7
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