Resumo

VILCHES, Antonio R.  e  LERMAN, Jorge. First degree atrio-ventricular block in  acute thyrotoxicosis. Medicina (B. Aires) [online]. 2004, vol.64, n.1, pp.51-53. ISSN 0025-7680.

Thyrotoxicosis may present with a variety of cardiovascular symptoms. Sinus tachycardia is the most frequently encountered electrocardiographic abnormality and conduction disturbances are extremely uncommon. We present a case of first degree atrio-ventricular block in a patient with newly diagnosed hyperthyroidism and discuss the underlying pathophysiological mechanisms and the clinical implications from the internist’s standpoint.

Palavras-chave : thyrotoxicosis; atrio-ventricular block; cardiovascular manifestations; EKG changes.

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