Duelling pacemakers: Unexpected pacemaker interaction resulting from a proprietary rate smoothing algorithm Justin M. Cloutier, MD, Colette M. Seifer,

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Presentation transcript:

Duelling pacemakers: Unexpected pacemaker interaction resulting from a proprietary rate smoothing algorithm Justin M. Cloutier, MD, Colette M. Seifer, MD, MB (Hons), FRCP, Clarence Khoo, MD, FRCPC HeartRhythm Case Reports Volume 1, Issue 4, Pages 229-231 (July 2015) DOI: 10.1016/j.hrcr.2015.03.007 Copyright © 2015 Heart Rhythm Society Terms and Conditions

Figure 1 Percentage of pacing of right-sided “active” pacemaker as obtained from interrogation of device. Pacing mode set to DDD 60–130. RR = sensor-driven paced events; Pace = paced events; Sens = sensed events; PAC = premature atrial complexes; PVC = premature ventricular complexes. HeartRhythm Case Reports 2015 1, 229-231DOI: (10.1016/j.hrcr.2015.03.007) Copyright © 2015 Heart Rhythm Society Terms and Conditions

Figure 2 Left-sided intracardiac device statistics on interrogation. Pacemaker set at VVI 40 with rate smoothing set at “slow.” Magnet rate at ERI = 80 ppm. HeartRhythm Case Reports 2015 1, 229-231DOI: (10.1016/j.hrcr.2015.03.007) Copyright © 2015 Heart Rhythm Society Terms and Conditions

Figure 3 Intracardiac electrogram from right-sided device. EGM = electrogram; A = atrial; V = ventricular; Ar = atrial refractory; As = atrial sensing; Vs = ventricular sensing; Vp = ventricular pacing. HeartRhythm Case Reports 2015 1, 229-231DOI: (10.1016/j.hrcr.2015.03.007) Copyright © 2015 Heart Rhythm Society Terms and Conditions