title: Successful catheter ablation of typical atrial flutter in a patient with a long vertical and diverticulum-like cavotricuspid isthmus.
abstract: A long vertical vestibule with a diverticulum-like morphology of cavotricuspid isthmus (CTI) was demonstrated by right atrial angiogram in a 47-year-old male patient in whom his typical atrial flutter was difficult to be ablated. Compatible with the right atrial angiography, the diverticulum-like CTI with a long vertical vestibule, pouch-like recess, and a long transverse posterior component was also demonstrated on volume-rendering reconstruction computed tomography and the virtual endoscopy showed prominent trabeculation inside the diverticulum-like part of CTI. The bidirectional CTI conduction block was successfully achieved after ablating along the CTI guided by the right atrial angiography.
authors.affiliation: Department of Internal Medicine, College of Medicine, Kaohsiung Medical University, and Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
authors.forename: Wei-Chung
authors.initials: WC
authors.lastname: Tsai
authors.forename: Chih-Sheng
authors.initials: CS
authors.lastname: Chu
authors.forename: Ding-Kwo
authors.initials: DK
authors.lastname: Wu
authors.forename: Wen-Ter
authors.initials: WT
authors.lastname: Lai
authors.forename: Kun-Tai
authors.initials: KT
authors.lastname: Lee
mesh_terms: D001282:Atrial Flutter / Q000150:complications* / Q000601:surgery*; D017115:Catheter Ablation / Q000379:methods*; D004240:Diverticulum / Q000150:complications* / Q000601:surgery*; D006349:Heart Valve Diseases / Q000150:complications* / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome; D014261:Tricuspid Valve