Open AccessHyperthyroid‐induced atrial flutter‐fibrillation with profound sinoatrial nodal pauses due to small doses of digoxin, verapamil, and propranolol
Author(s) -
Talley J. D.,
Wathen M. S.,
Hurst J. W.
Publication year - 1989
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960120109
Subject(s) - medicine , verapamil , digoxin , atrial flutter , atrial fibrillation , cardiology , propranolol , discontinuation , sinus rhythm , fibrillation , heart failure , calcium
Atrial fibrillation due to hyperthyroidism is characterized by a rapid ventricular reponse which is typically resistant to digoxin therapy. We report a patient with flutter‐fibrillation who developed cyclic sinus node dysfunction with profound ventricular pauses in response small doses of digoxin, verapamil, and propranolol, which resolved with discontinuation of the medications. Caution is necessary to avoid paradoxical ventricular when treating hyperthyroid‐induced atrial fibrillation.