25
Figure 7. Selective and Nonselective HBP
B. Transition from ns HBP to RV myocardial pacing is shown. Pseudodelta waves are seen
during ns His capture. During RV myocardial only capture, slur/notch is seen in 1, L, and V
4
–V
6
;
stimulus to V
6
RWPT is 105 ms; and stimulus to V
6
RWPT is 80 ms during ns HBP, which is the
same as His-V
6
RWPT.
Adapted with permission from Vijayaraman, et al. Heart Rhythm 2018;15:460-468.
A. During selective HBP, paced QRS duration and morpholog y are identical to baseline. His-V
6
R-wave peak time (RWPT) is same as stimulus to V
6
RWPT.
aVF, augmented Vector Foot; aVR, augmented Vector Right.
