Location of the putative endocardial ablation sites for the 4 main ganglionated plexi (GPs) and P point in a 3-dimensional electroanatomical model. Electroanatomical model of the left atrium (A) and electroanatomical model of the right and left atria (B): the GP between the superior vena cava and aorta (Ao-SVC) (GP1), the right superior GP (RSGP) (GP2), the right inferior GP (RIGP) (GP3), and the left superior GP (LSGP). In some patients, there may be an extended GP4 or even an left inferior GP. In this nomenclature, right and left describe the relative position in the left atrium and numbered GPs are used because the sites on the electroanatomic map represent the putative sites of the GPs. IVC = inferior vena cava; LIPV = left inferior pulmonary vein; LSPV = left superior pulmonary vein; RIPV = right inferior pulmonary vein; RSPV = right superior pulmonary vein.