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  • Title: Acebutolol and diacetolol plasma levels in patients undergoing myocardial revascularization with hypothermic cardiopulmonary bypass.
    Author: Mantz J, Blanchot G, Marty J, Farinotti R, Trouvin JH, Hazebroucq J, Desmonts JM.
    Journal: J Cardiothorac Anesth; 1990 Oct; 4(5):577-81. PubMed ID: 2132136.
    Abstract:
    Cardiopulmonary bypass (CPB) has been reported to alter the disposition of numerous drugs and consequently to modify their plasma levels. The present study was designed to delineate the time course of acebutolol (a cardioselective beta-blocker) and diacetolol (its main metabolite) plasma levels in seven patients undergoing myocardial revascularization with hypothermic CPB. All patients were given oral acebutolol twice daily until 3 hours before surgery. Initiation of CPB produced an immediate and significant, but transient, decrease in acebutolol and diacetolol plasma concentrations. Cessation of CPB was not associated with an increase in plasma beta-blocker levels. It is concluded that CPB does not induce major alterations in the time course of acebutolol and diacetolol plasma concentrations.
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