Incidence and location of Marked Low Voltage (MLV) areas acquired with
Circular catheters (CMC) AFocus and LassoNav, omnipolar catheter (OC)
and multipolar catheter (MC). MLVareas were quantified as a percentage
of the surface of each left atrial anatomical area analyzed,and were,
in turn, calculated in square centimeters through the measurements
yielded by the 3D mapping system used. The values are expressed as
mean ±SD. B. Comparison between OC and MC.OC identified a
significantly lower percentage of MLVthan MCin all the anatomical
areas analyzed, with the exception ofthe LW. AW=anterior wall;
IW=inferior wall; LW=lateral wall; PW=posterior wall; SW=septal wallFig. 6. Kaplan–Meier estimation of the time to atrial
fibrillation recurrence