Click on image to view larger version.

Figure 3 Based on electroanatomic mapping (CARTO), the biatrial replica could be divided into the nine separate areas: 1) septum including the Bachmann bundle; 2) left posteroseptal mitral annulus and coronary sinus ostium; 3) pulmonary veins; 4) roof of the left atrium; 5) mitral annulus; 6) cavotricuspid isthmus; 7) crista terminalis; 8) right and left atrial appendages; and 9) superior vena cava-right atrial junction. LAO = left anterior oblique; PA = posterior anterior.