Effect of propranolol on electrophysiologic features of the heart in patients with hyperthyroidism
Gasińska, T.; Prochaczek, F.; Izbicka, M.
Endokrynologia Polska 42(4): 533-542
1991
ISSN/ISBN: 0423-104X PMID: 1364504 Document Number: 367782
The effect of increasing doses of intravenously administered propranolol on electrophysiological features of heart was studied in 17 patients with untreated hyperthyroidism by using the transesophageal stimulation method. A positive and dose-dependent effect of propranolol on the studied parameters was found with the normalization of the majority of disturbances taking place after the administration of 6 mg of propranolol. This dose was safe and well tolerated by the patients. The sensitivity of the auriculo-ventricular junction to propranolol was less pronounced during the stimulated rhythm than during the sinus rhythm.