Skip to main content
Fig. 2 | BMC Cardiovascular Disorders

Fig. 2

From: Macro-reentrant atrial tachycardia after tricuspid or mitral valve surgery: is there difference in electrophysiological characteristics and effectiveness of catheter ablation?

Fig. 2

“Figure-of-eight” right atrial MAT ablation after mitral valve prosthesis replacement. AJ showed the activation sequence of the “figure-of-eight” macro-reentry using a common isthmus, which was localized in a low voltage area, bounded by bilateral lines of block K at the postero-lateral wall of the RA. The white solid lines represented lines of block defined by the system algorithm. White arrows indicated the activation direction from the earliest to the latest area. In L, M the MAT was terminated by a short linear ablation across the common isthmus (LL and PA view). Note the small diastolic potentials at the site of MAT termination. In N a prophylactic short line was added to prevent other possible macro-reentries. Abbreviations referred to Fig. 1

Back to article page