[First degree atrio-ventricular block in acute thyrotoxicosis].
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.
Vilches
Antonio R
AR
Hospital de Clínicas José de San Martín, Facultad de Medicina, Universidad de Buenos Aires. a.vilches@voyager.com.ar
Lerman
Jorge
J
D000208:Acute Disease; D000328:Adult; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D013956:Antithyroid Agents / Q000627:therapeutic use; D005260:Female; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D006980:Hyperthyroidism / Q000150:complications / Q000175:diagnosis; D008713:Methimazole / Q000627:therapeutic use; D011433:Propranolol / Q000627:therapeutic use; D013971:Thyrotoxicosis / Q000175:diagnosis* / Q000188:drug therapy
D000889:Anti-Arrhythmia Agents; D013956:Antithyroid Agents; D008713:Methimazole; D011433:Propranolol