Affiliation:
1. Cardiovascular Medicine Department, Dongguan Kanghua Hospital, Dongguan 523000, China
Abstract
A 63-year-old female patient with a history of pulmonary heart disease underwent radiofrequency ablation because of a persistent atrial flutter. Endocardial mapping with the carto3 system confirmed atrial flutter counterclockwise reentry around the tricuspid annulus. Routine ablation
of the cavo-tricuspid isthmus line to bi-directional block was performed. However, tachycardia with the same cycle length was induced again. After remapping, the tachycardia was confirmed to be focal atrial tachycardia located in the crista terminalis. After ablation, the tachycardia was terminated
and could not be induced again.