Fig. 1

The Mirror-Image Dextrocardia and Mapping of the Recurrent AFL in left atrium (LA). (A) Contrast-enhanced computed tomography examination: Confirmed the patient’s rare mirror-image dextrocardia anatomy. (B) Intracardiac echocardiography ruled out intracardiac thrombus and revealed severe compression of the left atrium, increasing the difficulty of ablation. (C) PVI and additional linear ablation was performed during the index radiofrequency ablation procedure (CARTO). (D) Entrainment mapping within the LAA and at three different sites in LA. PA = pulmonary artery, AO = aorta, LA = left atrium, SVC = superior vena cava, LAA = left atrial appendage, LIPV = left inferior pulmonary vein, RIPV = right inferior pulmonary vein, RSPV = right superior pulmonary vein, LSPV = left superior pulmonary vein, MA = mitral annulus