• Medicine · Jan 2023

    Effect of methylene blue on hemodynamic response in the early phase of septic shock: A case series.

    • Fabio Luis-Silva, Mayra Gonçalves Menegueti, Lucas Sato, Leandro Moreira Peres, Dos Reis SepedaCorinaCDivision of Intensive Care Medicine, Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil., Bruno C Petroski-Moraes, Mariana Dermínio Donadel, Gabriela Bortoleto Gallo, Maria Cecília Jordani, Fabiola Mestriner, Christiane Becari, Anibal Basile-Filho, EvoraPaulo R BPRBDivision of Cardiac Surgery, Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil., Olindo Assis Martins-Filho, and Maria Auxiliadora-Martins.
    • Division of Intensive Care Medicine, Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
    • Medicine (Baltimore). 2023 Jan 27; 102 (4): e32743e32743.

    RationaleMethylene blue (MB) has been used to increase blood pressure in septic shock, acting on the activity of guanylate cyclase and nitric oxide synthase.Patience ConcernsThe aim of this study is to demonstrate the benefit of MB in early phase of septic shock.Diagnoses: We report 6 cases of patients with septic shock with up to 72 hours of evolution.InterventionsWe used MB after fluid replacement, use of norepinephrine and vasopressin. Patients received a loading dose of MB and maintenance for 48 hours.OutcomesAll patients presented a reduction in the dose of vasopressors and lactate levels soon after the administration of the loading dose of MB, an effect that was maintained with the maintenance dose for 48 hours. Interleukin 6 and interleukin 8 were elevated at the beginning of the septic condition, with a progressive and marked reduction after the beginning of MB infusion, demonstrating a role of MB in reducing the inflammatory activity.LessonsThis case series suggests that MB used early in the treatment of septic shock may be useful in reducing vasopressor dose and lactate levels. Further studies are still required to further validate these findings.Copyright © 2023 the Author(s). Published by Wolters Kluwer Health, Inc.

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