• Shock · Apr 2022

    Randomized Controlled Trial

    Esmolol TO Treat The Hemodynamic Effects of Septic Shock: A Randomized Controlled Trial.

    • Michael N Cocchi, James Dargin, Maureen Chase, Parth V Patel, Anne Grossestreuer, Lakshman Balaji, Xiaowen Liu, Ari Moskowitz, Katherine Berg, and Michael W Donnino.
    • Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
    • Shock. 2022 Apr 1; 57 (4): 508517508-517.

    IntroductionSeptic shock is often characterized by tachycardia and a hyperdynamic hemodynamic profile. Use of the beta antagonist esmolol has been proposed as a therapy to lower heart rate, thereby improving diastolic filling time and improving cardiac output, resulting in a reduction in vasopressor support.MethodsWe conducted a two-center, open-label, randomized, Phase II trial comparing esmolol to placebo in septic shock patients with tachycardia. The primary endpoint was improvement in hemodynamics as measured by the difference in norepinephrine equivalent dose (NED) between groups at 6 hours after initiation of study drug. Secondary outcomes included assessing differences in inflammatory biomarkers and oxygen consumption (VO2).ResultsA total of 1,122 patients were assessed for eligibility and met inclusion criteria; 42 underwent randomization, and 40 received study interventions (18 in the esmolol arm and 22 in the usual care arm). The mean NED at 6 h was 0.30 ± 0.17 mcg/kg/min in the esmolol arm compared to 0.21 ± 0.19 in the standard care arm (P = 0.15). There was no difference in number of shock free days between the esmolol (2, IQR 0, 5) and control groups (2.5, IQR 0, 6) (P = 0.32). There were lower levels of C-reactive protein at 12 and 24 h in the esmolol arm, as well as a statistically significant difference in trend over time between groups. There were no differences in terms of IL-4, IL-6, IL-10, and TNFα. Among a subset who underwent VO2 monitoring, there was decreased oxygen consumption in the esmolol patients; the mean difference between groups at 24 h was -2.07 mL/kg/min (95% CI -3.82, -0.31) (P = 0.02), with a significant difference for the trend over time (P < 0.01).ConclusionAmong patients with septic shock, infusion of esmolol did not improve vasopressor requirements or time to shock reversal. Esmolol was associated with decreased levels of C-reactive protein over 24 h.Trial Registrationwww.clinicaltrials.gov. Registered February 24, 2015, https://clinicaltrials.gov/ct2/show/NCT02369900.Copyright © 2022 by the Shock Society.

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