Does verification of a complete line of block between the tricuspid annulus and the Eustachian valve/ridge improve long-term ablation success in patients with atrial flutter?
Verification of a complete line of block between the tricuspid annulus and the Eustachian valve/ridge is crucial for long-term success in atrial flutter ablation.
(1) The EVR forms a line of fixed conduction block between the IVC and the CS; (2) the EVR and the TA provide boundaries for the AFL reentrant circuit; and (3) verification of a complete line of block between the TA and the EVR is a more reliable criterion for long-term ablation success.
Nakagawa et al. (Thu,) studied this question.