抄録
During the pacemaker implantation and puls generator replacement, unipolar right ventricular electrograms were recorded from 26 patient (24 at implantation and 6 at puls generator replacement). The mean voltage was 7, 5 7 my in initial implantations. The chronic voltage amplitude is 11 percent lower than that of acute electrogram.
There was a direct correlation between surface area of the electrodes and the Q RS potentials measured. With the present trend toward utilization of small surface area electrodes to reduce pacemaker cell draine, care must be taken to avoid the sensing problems.
