AT= atrial tachycardia; MAT = macroreentry atrial tachycardia; CL=cycle length; CTI=cavotricuspid isthmus; DP=double potentials; ESA = electrically silent area; FCB=functional conduction block; FP=fragmented potential; LAA=left atrial appendage; PM=pace marker; PMF=perimitral flutter; PTF=peritricuspid flutter; RPV, right pulmonary vein; RMAT= roof-dependent macroreentrant tachycardia; SR, sinus rhythm