ephedrine + phenylephrine (Centre Hospitalier Universitaire de Clermont-Ferrand)

Ephedrine and phenylephrine are sympathomimetic vasopressors used to manage intraoperative hypotension. This specific entry refers to a clinical trial (NCT01141374) conducted by University Hospital, Clermont-Ferrand, which compared the efficacy and safety of these two agents in patients undergoing carotid endarterectomy. Ephedrine acts as a non-selective agonist at alpha- and beta-adrenergic receptors and also promotes the release of endogenous norepinephrine, providing both vasoconstrictive and inotropic effects. Phenylephrine is a selective alpha-1 adrenergic receptor agonist that primarily increases systemic vascular resistance through potent vasoconstriction. The study aimed to determine if the pure alpha-adrenergic activity of phenylephrine might negatively impact cerebral perfusion compared to the mixed adrenergic profile of ephedrine during periods of accidental hypotension.

Other names

ephedrine and phenylephrine