Bundle brunch reentrant ventricular tachycardia with two distinct conduction patterns in a patient with complete right bundle branch block.
We report a rare case of bundle branch reentrant ventricular tachycardia [BBRVT]. A 67-year-old female was admitted for management of wide QRS tachycardia (right bundle branch block [RBBB] and a southwest axis). The mapping procedure revealed the tachycardia circuit consisted of the left anterior fascicle (LAF) as an antegrade, and the right bundle as a retrograde pathway. She presented RBBB during sinus rhythm. LAF ablation changed the tachycardia configuration to a northwest axis and prolonged the cycle length. Left posterior fascicle ablation terminated the tachycardia, and complete atrioventricular block occurred, which showed the unidirectional conduction over the right bundle.
Enjoji
Yoshihisa
Y
Cardiovascular Center, Kyoto Katsura Hospital, Kyoto, Japan. enmomo@nifty.com
Mizobuchi
Masahiro
M
Shibata
Kensaku
K
Ono
Tsuyoshi
T
Funatsu
Atsushi
A
Kanbayashi
Daisuke
D
Kobayashi
Tomoko
T
Nakamura
Shigeru
S
D000368:Aged; D018780:Body Surface Potential Mapping / Q000379:methods*; D002037:Bundle-Branch Block / Q000150:complications* / Q000175:diagnosis*; D005260:Female; D006329:Heart Conduction System; D006801:Humans; D035583:Rare Diseases / Q000175:diagnosis; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000150:complications* / Q000175:diagnosis*