Key result
Resetting with simultaneous recordings during bundle branch reentry ventricular tachycardia localized a partially excitable gap to the V-His portion of the reentry circuit.
Case Report (n=1)
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Resetting responses in bundle branch reentry ventricular tachycardia can localize a partially excitable gap to the V-His portion of the circuit.
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.
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Sarter et al. (1996) conducted a case report in Bundle branch reentry ventricular tachycardia (n=1). Resetting with simultaneous recordings was evaluated on Reset response. Resetting with simultaneous recordings during bundle branch reentry ventricular tachycardia localized a partially excitable gap to the V-His portion of the reentry circuit.
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