Article: An unusual cause of syncope: hyperthyroidism / Nadir bir senkop sebebi: Hipertiroidi.(Letters to the Editor / Editore Mektuplar)(Clinical report)

Hyperthyroidism is a common cause of atrial fibrillation (AF) or atrial flutter (AFL). Rarely it may result in atrioventricular (AV) block (1). Complete resolution of both AFL and AV block with a very short time treatment of propylthiouracil has not been reported.

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A 40-year-old male has been referred to our Cardiology Department from Department of Neurology with the diagnosis of syncope. On physical examination, he had a moist warm skin. His electrocardiogram (ECG) showed complete AV block (Fig. 1). Echocardiography was normal. His thyroid function tests revealed that he had ...

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