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AV Node Dysfunction in the Mitral Valve Prolapse Syndrome
Author(s) -
GREENSPON ARNOLD J.,
SCHAAL STEPHEN F.
Publication year - 1980
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.1540-8159.1980.tb05280.x
Subject(s) - medicine , mitral valve prolapse , cardiology , mitral valve
The mitral valve prolapse syndrome is associated with a variety of atrial and ventricular arrhythmias. A portion of these patients manifest bradyarrhythmias, which in turn, may be the cause of lightheadedness and syncope. This study details the clinical and electrophysiologic characteristics of seven patients with symptomatic mitral valve prolapse and AV node dysfunction. The electrophysiology study demonstrated either a prolonged AH interval or abnormal response to atrial pacing in six of seven patients. A significant proportion of these patients had abnormalities of sinus node function and distal His‐Purkinje conduction in addition to AV node dysfunction. AV node dysfunction in symptomatic patients with mitral valve prolapse may be secondary to autonomic dysfunction or diffuse conduction system disease.