Suppression of Demand Pacemakers by Inactive Pacemaker Electrodes

WARREN D. WIDMANN, STELIO MANGIOLA, LAWRENCE A. LUBOW, FAYETTA M. DOLAN
1972 Circulation  
Ventricular inhibited cardiac pacemakers were suppressed by intimate contact of the tip of the active pacemaker electrode with that of the inactive pacemaker electrode in two patients. This contact apparently was sensed as myocardial electrical activity and resulted in variable suppression of pacemaker emission. There was no interference with R-wave sensing function. The threshold for stimulation was unaffected. There was no loss of capture as tested with the magnet-controlled continuous mode
more » ... stimulation. This type of pacemaker failure can be remedied simply by withdrawing the tips of the electrodes from intimate contact.
doi:10.1161/01.cir.45.2.319 pmid:5009476 fatcat:ko2wu4yudnabjnpp3jpon74xqi