BACKGROUND: Cardiac repolarization has been shown to be shorter and faster in men compared with women. In this study, we examined the electrocardiographic pattern of repolarization in patients with abnormal plasma levels of testosterone to gain insight into the role that this hormone plays in modulating repolarization. METHODS AND RESULTS: Repolarization was measured in 27 castrated men, 26 women with virilization, and 53 control subjects pair-matched for age and sex. Repolarization in castrated men was slower and longer than that of normal men. Women with virilization exhibited a shorter and faster repolarization than normal women and castrated men. These differences are the opposite of those found in the normal population. Finally, the changes observed in castrated men may be reverted by testosterone. CONCLUSIONS: We conclude that testosterone plays an important role in modulating cardiac repolarization.
BACKGROUND: Cardiac repolarization has been shown to be shorter and faster in men compared with women. In this study, we examined the electrocardiographic pattern of repolarization in patients with abnormal plasma levels of testosterone to gain insight into the role that this hormone plays in modulating repolarization. METHODS AND RESULTS: Repolarization was measured in 27 castrated men, 26 women with virilization, and 53 control subjects pair-matched for age and sex. Repolarization in castrated men was slower and longer than that of normal men. Women with virilization exhibited a shorter and faster repolarization than normal women and castrated men. These differences are the opposite of those found in the normal population. Finally, the changes observed in castrated men may be reverted by testosterone. CONCLUSIONS: We conclude that testosterone plays an important role in modulating cardiac repolarization.
Authors: Jonathan Buber; Jehu Mathew; Arthur J Moss; W Jackson Hall; Alon Barsheshet; Scott McNitt; Jennifer L Robinson; Wojciech Zareba; Michael J Ackerman; Elizabeth S Kaufman; David Luria; Michael Eldar; Jeffrey A Towbin; Michael Vincent; Ilan Goldenberg Journal: Circulation Date: 2011-05-31 Impact factor: 29.690
Authors: Alan H Kadish; Philip Greenland; Marian C Limacher; William H Frishman; Sandra A Daugherty; Janice B Schwartz Journal: Ann Noninvasive Electrocardiol Date: 2004-10 Impact factor: 1.468