• Dtsch Arztebl Int · Oct 2022

    Metamizole-Associated Risks in Decompensated Hepatic Cirrhosis.

    • Benjamin Schulte, Tammo L Tergast, Marie Griemsmann, Denise Menti, Neslihan Deveci, Julia Kahlhöfer, Petra Dörge, Lucas Hüffner, Anke R M Kraft, Patrick Behrendt, Heiner Wedemeyer, Markus Cornberg, Dirk O Stichtenoth, and Benjamin Maasoumy.
    • Department of Gastroenterology, Hepatology, and Endocrinology, Hannover Medical School; Center for Individualized Infection Medicine (CiiM), Hannover; German Center for Infection Research (DZIF), German Liver Foundation, HepNet, Hannover; Twincore, Center for Experimental and Clinical Infection Research, Hannover; German Center for Infection Research (DZIF), Hannover-Braunschweig; Institute for Clinical Pharmacology, Hannover Medical School.
    • Dtsch Arztebl Int. 2022 Oct 14; 119 (41): 687693687-693.

    BackgroundBecause of the increased risk of acute renal failure (ARF), the use of cyclooxygenase (COX) inhibitors is not recommended in patients with decompensated hepatic cirrhosis. Metamizole is not a classic COX inhibitor, but there are insufficient data to support its safe use. In this study, we investigate the effect of metamizole on the risk of ARF in these patients.MethodsMetamizole use, ARF incidence, and patient mortality were examined in a large, retrospective, exploratory cohort and validated with data from a prospective registry.Results523 patients were evaluated in the exploratory cohort. Metamizole use at baseline was documented in 110 cases (21%) and was independently associated with the development of ARF, severe (grade 3) ARF, and lower survival without liver transplantation at follow-up on day 28 (HR: 2.2, p < 0.001; HR: 2.8, p < 0.001; and HR: 2.6, p < 0.001, respectively). Interestingly, the risk of ARF depended on the dose of metamizole administered (HR: 1.038, p < 0.001). Compared to patients who were treated with opioids, the rate of ARF was higher in the metamizole group (49% vs. 79%, p = 0.014). An increased risk of ARF with metamizole use was also demonstrated in the independent validation cohort (p < 0.001).ConclusionMetamizole therapy, especially at high doses, should only be used with a high level of caution in patients with decompensated cirrhosis.

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