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Vasopressors for shock.

M Müllner, B Urbanek, C Havel

    The Cochrane Database of Systematic Reviews
    |July 22, 2004
    PubMed
    Summary
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    Limited evidence exists on the optimal vasopressor for treating circulatory shock. This review found insufficient data to determine if any specific vasopressor agent is superior for improving patient survival in critical care settings.

    Area of Science:

    • Critical Care Medicine
    • Pharmacology
    • Clinical Trials

    Background:

    • Intravenous fluids are the initial treatment for shock symptoms.
    • Vasopressors (e.g., dopamine, norepinephrine) are used when fluids fail.
    • The optimal choice of vasopressor for shock remains unclear.

    Purpose of the Study:

    • To evaluate vasopressor efficacy in critically ill patients with circulatory shock.
    • To determine if specific vasopressors reduce overall mortality.
    • To assess the impact of vasopressor choice on ICU length-of-stay and quality of life.

    Main Methods:

    • Systematic search of multiple databases (MEDLINE, EMBASE, etc.) for randomized controlled trials (RCTs) up to November 2003.
    • Inclusion criteria: RCTs comparing vasopressors against placebo or IV fluids for any type of circulatory shock.

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  • Mortality was the primary outcome; data were analyzed using random effects models.

    • Main Results:

    • Eight RCTs were identified, with many reporting unsatisfactory methodological details.
    • Limited data compared specific vasopressors: norepinephrine vs. dopamine (septic shock), vasopressin vs. placebo (septic shock).
    • One study compared terlipressin with norepinephrine in hypotension post-anesthesia, with no reported deaths.

    Conclusions:

    • The current evidence base is insufficient to guide clinical practice for vasopressor selection in shock.
    • No definitive conclusions can be drawn regarding the superiority of any particular vasopressor agent.
    • Further high-quality RCTs are needed to inform treatment decisions.