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The Effect of Anodal Stimulation on V‐V Timing at Varying V‐V Intervals
Author(s) -
VAN GELDER BERRY M.,
BRACKE FRANK A.,
MEIJER ALBERT
Publication year - 2005
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.2005.00185.x
Subject(s) - qrs complex , medicine , stimulation , cardiology
We studied the effect of anodal capture at the ring electrode of the right ventricular (RV) lead on interventricular (V‐V) timing during biventricular (BiV) pacing, in which left ventricular (LV) pacing was preceding RV pacing. The V‐V interval was programmed from 80 to 4 ms (LV first) in the LV unipolar (LV tip—generator can) followed by the LV tip‐RV ring pacing configuration. In the LV unipolar configuration, V‐V programming leads to a continuous change in morphology of the QRS complex according to a change in collision of both activation fronts. When using the LV tip‐RV ring configuration with anodal capture at the RV ring electrode no change in QRS morphology was recorded varying the V‐V interval from 80 to 60 and 40 ms. However, at V‐V intervals between 20 and 4 ms a change in morphology of the QRS complex was recorded, which was due to additional cathodal stimulation of the RV tip electrode during RV stimulation.