Unusual presentation of thyrotoxicosis as complete heart block and renal failure: a case report

IntroductionThyrotoxicosis is a clinical entity often very difficult to diagnose without biochemical confirmation as its clinical features can be highly varied. The most common cardiac manifestations of thyrotoxicosis are resting sinus tachycardia, supraventricular tachycardia including atrial fibrillation and atrial flutter with or without cardiac failure.

Bradycardia and atrio-ventricular conduction defects are very uncommon in thyrotoxicosis.Case presentationWe report the case of a 59-year-old Caucasian man presenting with progressive weight loss, abnormal liver function, acute renal failure and complete heart block due to thyrotoxicosis.

Conclusion: Thyrotoxicosis should be considered as a possible diagnosis in patients with bradycardia and heart blocks associated with abnormal symptoms like weight loss. Nevertheless, the clinical, electrophysiological and biochemical abnormalities associated with thyrotoxicosis may be completely reversible restoring euthyroid state.

Author: Suresh KrishnamoorthyRajay NarainJohn Creamer
Credits/Source: Journal of Medical Case Reports 2009, 3:9303

Published on: 2009-11-28

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