Peters W, Greve H, Gülker H, Heuer H
Medizinische Klinik, Westfälischen Wilhelms-Universität, Münster.
Z Kardiol. 1988 Apr;77(4):201-7.
In order to compare bi- (b) and unipolar (u) stimulation, sensing and electrical interference, twelve patients were followed over a period of ten months. The implanted device was the CPI Delta 925, programmable to the bi- and unipolar mode in the atrium (a) as well as in the ventricle (v). A CPI-4266 screw-in lead positioned in the atrium and a CPI-4260 hook lead placed in the ventricle were connected to the pacemaker. Intraoperatively determined were: (1) the threshold at pulse durations of 0.1 ms, of 0.5 ms and of 1.0 ms, (2) the P/QRS-amplitude, (3) the slew-rate and (4) the resistance in both the bi- and unipolar mode. Having programmed the atrial sensitivity to 0.25 mV or to 0.75 mV and the ventricular sensitivity to 0.5 mV or to 1.5 mV, we postoperatively examined and compared in the two modes of polarity the threshold (2.2 V and 5 V), the P/QRS-amplitude and finally the electrical interference triggered with the help of chest wall stimulation. All measurements were performed one day, four weeks and four months after implantation.(ABSTRACT TRUNCATED AT 250 WORDS)
为了比较双极（b）和单极（u）刺激、感知及电干扰情况，对12例患者进行了为期10个月的随访。植入设备为CPI Delta 925，可在心房（a）和心室（v）编程为双极和单极模式。一根置于心房的CPI - 4266旋入式电极和一根置于心室的CPI - 4260钩状电极与起搏器相连。术中测定了：（1）脉冲持续时间为0.1 ms、0.5 ms和1.0 ms时的阈值；（2）P/QRS波幅；（3）转换速率；（4）双极和单极模式下的电阻。将心房感知度编程为0.25 mV或0.75 mV，心室感知度编程为0.5 mV或1.5 mV后，术后在两种极性模式下检查并比较了阈值（2.2 V和5 V）、P/QRS波幅，最后比较了借助胸壁刺激引发的电干扰。所有测量均在植入后1天、4周和4个月进行。（摘要截选于250词）
