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The Appearance of Ventricular Preexcitation during Exercise Testing Reproduced by Dobutamine Administration
Author(s) -
MUJOVIĆ NEBOJŠA,
GRUJIĆ MIODRAG,
MR−D?A STEVAN,
KOCIJANČIĆ ALEKSANDAR,
MUJOVIĆ NATAŠA
Publication year - 2010
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.1540-8159.2009.02663.x
Subject(s) - medicine , dobutamine , cardiology , hemodynamics
A 33‐year‐old woman presented with exercise‐related palpitations after an apparently successful catheter‐ablation of overt midseptal accessory pathway. Post procedure, the electrocardiogram at rest was normal, while the progressive appearance of delta‐wave during treadmill stress testing was recorded. In addition, the occurrence of ventricular preexcitation was reproduced by controlled administration of dobutamine. Detailed understanding of the unusual pathway electrophysiology resulted in specific planning of the second procedure. In the basal state, pacing maneuvers did not demonstrate any evidence of pathway conduction. However, during infusion of dobutamine bidirectional conduction in the right anterior pathway was restored, enabling definitive cure by radiofrequency. (PACE 2010; 33:766–769)