Atrial flutter with an epicardial and endocardial breakthrough in the cavotricuspid isthmus.
Shuhei KobayashiHidehira FukayaDaiki SaitoTetsuro SatoGen MatsuuraYuki ArakawaYuki ShirakawaRyo NishinaritaAi HoriguchiNaruya IshizueJun OikawaJun KishiharaShinichi NiwanoJunya AkoPublished in: Journal of arrhythmia (2021)
We performed cavotricuspid isthmus (CTI) linear ablation for atrial flutter; however, the tachycardia cycle length was not changed at all. In such cases, repeated or broad line ablation is usually performed. We presented that high-density three-dimensional mapping after the first CTI linear ablation, which revealed the complex tachycardia circuit with the epicardial and endocardial breakthrough.