• Br J Anaesth · Oct 2011

    Randomized Controlled Trial

    Haemodynamic consequences of etomidate administration in elective cardiac surgery: a randomized double-blinded study.

    • J Morel, M Salard, C Castelain, M C Bayon, P Lambert, M Vola, C Auboyer, and S Molliex.
    • Département d'Anesthésie Réanimation, Centre Hospitalier Universitaire de Saint Etienne, F-42055 Saint Etienne, France. jerome.morel@chu-st-etienne.fr
    • Br J Anaesth. 2011 Oct 1; 107 (4): 503-9.

    BackgroundThe consequences of inhibition of cortisol synthesis by a single dose of etomidate on subsequent vasopressor drug usage and the duration of relative adrenal insufficiency (RAI) after cardiac surgery are not known.MethodsThis was a prospective, randomized, double-blinded controlled trial of 100 patients undergoing elective cardiac surgery and receiving either etomidate or propofol at induction of anaesthesia. A short corticotropin test was performed 12, 24, and 48 h after anaesthesia induction. RAI was defined as a response <250 nmol litre(-1).ResultsThe mean (sd) norepinephrine infusion rate during the first 48 postoperative hours was 0.11 (0.01) and 0.11 (0.01) µg kg(-1) min(-1) in the etomidate and propofol groups, respectively (P=0.89). Time to norepinephrine withdrawal was similar between the groups. The incidence of RAI was higher in the etomidate group at 12 h (100% vs 41%, P<0.001) and 24 h (85% vs 25%, P<0.001).ConclusionsA single bolus of etomidate blunts the hypothalamic-pituitary-adrenal axis response for more than 24 h in patients undergoing elective cardiac surgery, but this was not associated with an increase in vasopressor requirements.

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