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Effect of Biventricular Pacing on Left Ventricular Outflow Tract Pressure Gradient in a Patient with Hypertrophic Cardiomyopathy and Normal Interventricular Conduction
Author(s) -
KOMSUOGLU BAKI,
VURAL AHMET,
AGACDIKEN AYŞEN,
URAL DILEK
Publication year - 2006
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/j.1540-8167.2005.00291.x
Subject(s) - medicine , cardiology , ventricular outflow tract , presyncope , catheter ablation , hypertrophic cardiomyopathy , ventricular tachycardia , cardiac catheterization , ablation , blood pressure , heart rate
We report a case of hypertrophic obstructive cardiomyopathy (HOCM) that was markedly improved by biventricular pacing. A 55‐year‐old woman with HOCM presented with palpitation and presyncope. Electrophysiologic study revealed an atrioventricular nodal reentrant tachycardia. After radiofrequency catheter ablation, a Mobitz type II atrioventricular block developed and a permanent pacemaker implantation was decided. Cardiac catheterization showed a left ventricular outflow tract (LVOT) gradient of 130 mmHg. Right dual‐chamber and atrial‐synchronous left ventricular epicardial pacing failed to reduce the gradient. After biventricular pacing, LVOT gradient decreased to 20 mmHg. Biventricular pacing may be an alternative therapy for patients with HOCM.