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“Clockwise” and “Counterclockwise” Bundle Branch Reentry as a Mechanism for Sustained Ventricular Tachycardia Masquerading as Supraventricular Tachycardia
Author(s) -
WANG PAUL J.,
FRIEDMAN PETER L.
Publication year - 1989
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1989.tb05058.x
Subject(s) - medicine , reentry , cardiology , clockwise , tachycardia , left bundle branch block , right bundle branch block , bundle branch block , supraventricular tachycardia , ventricular tachycardia , electrocardiography , bundle , heart failure , geometry , materials science , rotation (mathematics) , mathematics , composite material
A 35‐year‐old man presented with a regular tachycardia having a typical right bundle branch block morphology. Electrophysiological testing revealed inducible tachycardia exhibiting counterclockwise as well as clockwise bundle branch reentry, leading to left and right bundle branch block morpbologies. The disappearance of spontaneous episodes of these tachycardias following resolution of right bundle branch block in the resting electrocardiogram suggested that slow conduction in the right bundle branch played an essential role in the tachycardia circuit.