Figure 3
Representative bipolar voltage map of the left atrium in a patient with
LVZs on the anterior LA wall at the LA-ascending aorta contact area. The
blue, green, yellow, orange, and red areas indicate LVZs (<0.5
mV), and the purple areas are those of higher voltage (≥0.5 mV).
LSPV = left atrial pulmonary vein; LVZs = low-voltage zones; RIPV =
right inferior pulmonary vein, RSPV = right superior pulmonary vein.