1. Lilian Mantziari et al. JACEP 2015;1:411-420
Typical Atrial Flutter RA maps in the left anterior oblique (LAO) caudal view (case 11). (A) Voltage and activation map of the RA during typical counter-clockwise atrial flutter (Online Video 1). (B) Voltage map after ablation on the CTI line shows low voltage along the line but a possible isthmus of conduction. The activation mode of the same map shows a gap on the CTI line and conduction of the activation during CS pacing. Review of the points on the site of the gap shows fractionated signal. (C) Voltage map after further ablation of the gap shows very low voltage along the line. The time map confirms bidirectional blockage with widely split double potentials. CS = coronary sinus; CTI = cavotricuspid isthmus; EGM = electrogram; IVC = inferior vena cava; RA = right atrium; TV = tricuspid valve.
Lilian Mantziari et al. JACEP 2015;1:
American College of Cardiology Foundation