• Journal of critical care · Jun 2020

    Review

    Clinical utility of midodrine and methylene blue as catecholamine-sparing agents in intensive care unit patients with shock.

    • Stephanie Tchen and Jesse B Sullivan.
    • Froedtert Hospital, 9200 W Wisconsin Ave, Milwaukee, WI 53226, United States of America. Electronic address: stephanie.tchen@froedtert.com.
    • J Crit Care. 2020 Jun 1; 57: 148-156.

    AbstractShock is common in the intensive care unit, affecting up to one third of patients. Treatment of shock is centered upon managing hypotension and ensuring adequate perfusion via administration of fluids and catecholamine vasopressors. Due to the risks associated with catecholamine vasopressors, interest has grown in using catecholamine-sparing agents such as midodrine and methylene blue. Midodrine is an orally administered alpha-1 adrenergic agonist while methylene blue is an intravenously administered blue dye used to restore vascular tone and increase blood pressure. Separate MEDLINE, Scopus, and Embase database searches were conducted to assess literature revolving around these agents. Examples of search terms included "midodrine", "methylene blue", "critically ill", "shock", and "catecholamine-sparing." Several studies have evaluated their use in patients with shock and found potential benefits in terms of causing significant elevations in blood pressure and hastening catecholamine vasopressor discontinuation with few adverse effects; however, robust evidence is lacking for these off-label indications. Because of the variety of dosing strategies used and the incongruences between patient populations, it is also challenging to define finite recommendations. This review aims to summarize current evidence for the use of midodrine and methylene blue as catecholamine-sparing agents in critically ill patients with resolving or refractory shock.Copyright © 2020 Elsevier Inc. All rights reserved.

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