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Progressive Atrioventricular Block During Exercise in Univentricular Heart
Author(s) -
ALBOLIRAS ERNERIO T.,
PORTER COBURN J.,
RITTER DONALD G.,
DANIELSON GORDON K.,
DRISCOLL DAVID J.
Publication year - 1986
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.1540-8159.1986.tb06631.x
Subject(s) - medicine , atrioventricular block , cardiology , heart block , block (permutation group theory) , electrocardiography , geometry , mathematics
Two patients who had univentricular heart presented with complaints of recurrent nausea and vomiting during exertion. Exercise study revealed 1:1 atrioventricular conduction and no symptoms at rest; at peak exercise, both patients experienced progressive, high grade, second degree atrioventricular block and nausea. Both patients underwent permanent pacemaker implantation, with relief of symptoms. Exercise testing is important in evaluating patients who are at increased risk of spontaneous atrioventricular block, and exertion‐induced nausea may be a clue to its presence.