Example of SVC isolation from the RA posterior wall. A: 3D EAM in the RAO and LAO superior view, displaying ablation points (purple dots) with the site of SVC isolation (green dot), along with PN capture sites (white dots). B: electrograms recorded during the various stages of SVC isolation: left, baseline; middle, ablation at the level of septal SVC–RA junction (pink star in the EAM); right, ablation at the level of the posterior SVC-RA junction (yellow star). C: ablation in the RA posterior wall (green star) showing progressive delay and isolation. D: intracardiac echocardiography showing the site of SVC isolation. ABL, ablation; CR, crista terminalis; CS, coronary sinus; EAM, electroanatomical map; Ls, circular mapping catheter; LAO, left anterior oblique; PN, phrenic nerve; RA, right atrium; RAO, right anterior oblique; SVC, superior vena cava.