Please click here to obtain permission to reproduce this image.
Click on image to view larger version.
Figure 2 Pace Mapping (Case 8)
The PVCs with a left coronary sinus cusp (LCC) origin showed a left bundle branch block and inferior QRS axis morphology with a QRS transition between V4 and V5. An excellent pace map was obtained at the EVA site in the RVOT (pace map [PM] score = 22/24). However, a poor PM was obtained at the EVA site in the LCC (PM score = 5/24). The pacing stimulus to QRS interval was 0 ms and 50 ms during pace mapping from the RVOT and LCC, respectively. Abbreviations as in Figure 1.
|
