Nakata Y, Ogura S, Tokano T, Yasuda M, Ohno Y, Hisaoka T, Sumiyoshi M, Nakazato Y, Yamaguchi H
Department of Cardiology, Juntendo University, School of Medicine, Tokyo, Japan.
Pacing Clin Electrophysiol. 1992 Oct;15(10 Pt 1):1425-9. doi: 10.1111/j.1540-8159.1992.tb02914.x.
Three patients who had undergone implantation of a rate modulated, atrial sensitive RS4 pacemaker, with a single orthogonal lead underwent replacement of a depleted unit with a DDD pulse generator, reusing the original lead with an adapter that allowed conversion of the bipolar atrial electrode into unipolar configuration. The mean atrial electrogram amplitude was 1.8 mV and no significant atrial sensing defects were found during Holter monitoring. As the RS4 pulse generator is no longer available, continued VDD pacing is possible by replacing it with a DDD pulse generator using the previously implanted single lead system.
