• Middle East J Anaesthesiol · Feb 1991

    Randomized Controlled Trial Comparative Study Clinical Trial

    The hemodynamic effects of intravenous norepinephrine versus epinephrine and phenylephrine in patients with ischemic heart disease.

    • A Baraka, S Haroun, M A Baroody, A Sibai, A Dabbous, S el-Siddik, and R Karam.
    • Department of Anesthesiology, American University of Beirut, Lebanon.
    • Middle East J Anaesthesiol. 1991 Feb 1;11(1):53-62.

    AbstractThe hemodynamic effects of an intravenous bolus of norepinephrine 10 micrograms, phenylephrine 100 micrograms and epinephrine 10 micrograms were investigated in 30 patients scheduled for coronary artery bypass grafting. The hemodynamic changes following norepinephrine were similar to those achieved by phenylephrine. Both drugs increased the mean blood pressure and systemic vascular resistance without any significant change of cardiac output. In contrast, epinephrine increased the mean arterial pressure and cardiac output without a significant change of systemic vascular resistance. The results suggest that intravenous norepinephrine acts similar to phenylephrine as an alpha-adrenergic agonist, while epinephrine acts predominantly as a beta-adrenergic agonist.

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