Bundle branch reentry ventricular tachycardia: an investigation of the circuit with resetting.
We describe a patient with bundle branch reentry ventricular tachycardia with 1:1 VA conduction in whom resetting was performed while obtaining simultaneous recordings from the right ventricular apex (V) and His-bundle electrogram. Both the tachycardia return cycle and the V-His interval demonstrated an increasing reset response, while the His-V interval demonstrated a flat reset response. These reset responses are consistent with a partially excitable gap localizing to the V-His portion of the bundle branch reentry circuit.
Sarter
B H
BH
Philadelphia Heart Institute, Medical College of Pennsylvania-Hahneman University School of Medicine, Philadelphia, USA.
Schwartzman
D
D
Callans
D J
DJ
Gottlieb
C D
CD
Marchlinski
F E
FE
D000328:Adult; D002036:Bundle of His / Q000503:physiopathology*; D006801:Humans; D008297:Male; D017180:Tachycardia, Ventricular / Q000503:physiopathology*