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AVRT ablation using CARTO Univu. RAO 30° and LAO 40° projection. Coronary sinus activation map shows earliest ventricular signal during preexcitation in red color. Red dot represents successful ablation site. Green: real‐time CS. Brown: shadow CS allowing detection of catheter dislodgement. Abl, Ablation catheter; AVRT, atrioventricular reentrant tachycardia; Cs, coronary sinus catheter; LAO, left anterior oblique; RAO, right anterior oblique
