A. PA projection. Qualitative analysis after setting 0.05-0.5
mV voltage range. Bipolar maps in along and across configurations showed
LV in the PW, which we considered compatible with patchy fibrosis (set
of different colors), while in the IW only normal tissue (purple color)
was observed in the along configuration and partially patchy fibrosis in
the across configuration. Finally, omnipolar maps in the HD-wave
configuration showed normal tissue in both the PW and IW. Note the gray
color in the bipolar map, which demonstrates isolation of pulmonary
veins, and the red color in the omnipolar map, which seems not to
completely prove PVI. B. Re-evaluation after setting 0.5-1.0 mV
voltage range. The along and across bipolar HD maps showed an LV
increase, with a shift to gray (transformation from potential patchy
fibrosis into scar). The HD-wave map also showed an LV increase, but
with a shift from purple to a set of different colors (transformation
from normal tissue to potential patchy fibrosis). Note that pulmonary
veins are isolated in both bipolar and HD-wave maps (gray color in
both).
Fig. 4. Choice of the optimal range within which to identify
potential patchy fibrosis