The Journal of Thoracic and Cardiovascular Surgery, Vol 70, 701-706, Copyright © 1975 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association
The morphologic effects of simultaneous infusion of levarterenol and phentolamine on the canine myocardium
EL Bove, LC Argenta, VM Cimmino, JW Brown, RH Nishiyama and MM Kirsh
The effect of simultaneous administration of levarterenol and phentolamine
on the myocardium over a 3 hour period was studied in 15 adult mongrel
dogs. All animals receiving levarterenol alone had moderate-to-severe
subendocardial hemorrhage and necrosis. Four of the 6 animals receiving the
simultaneous infusion of levarterenol and phentolamine had little or no
hemorrhage or necrosis. These differences are significant (p less than
0.02). It is concluded that the administration of phentolamine
simultaneously with levarterenol affords a significant protective effect on
the myocardium.