First degree atrio-ventricular block in acute thyrotoxicosis
Bloqueo aurículo-ventricular de primer grado en tirotoxicosis aguda

Antonio R Vilches, Jorge Lerman
2004 Medicina (Buenos Aires)  
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.
pmid:15034958 fatcat:trxj3hockfhr5mtpubedfygsoe