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. Author manuscript; available in PMC: 2014 Dec 9.
Published in final edited form as: Heart Rhythm. 2008 Mar 4;5(4):545–550. doi: 10.1016/j.hrthm.2008.02.033

Figure 2.

Figure 2

A. Baseline rhythm strip showing surface ECG, marker channel, atrial and ventricular intracardiac electrogram leads. There is intermittent ventricular T-wave oversensing observed during the post-ventricular refractory period (“S” in black box) at baseline. B. Rhythm strip after placement of DMP causing interference with the atrial channel, the ventricular channel, an absent atrial sensing marker on the marker channel, but no change in the ventricular channel and no change in intervals on the surface ECG. The electrical noise detected by the programmer is not interfering with the actual pacemaker function.