Figure 1. Comparison of mean regional voltage between patients
with and without low-voltage areas
Mean regional voltages between patients with and without low-voltage
areas were compared. Low-voltage
areas indicated localized areas with bipolar voltage < 0.50
mV. Mean regional voltage was calculated by averaging evenly selected 10
points at the region. The left atrium was divided into 6 regions.
Patients with localized low-voltage areas at any portion of the left
atrium had significantly lower mean regional voltage throughout all
regions than those without.