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Association of noradrenaline dose with mortality in critically ill patients: a systematic review and dose-response meta-analysis

Reinikainen, Matti; Delamarre, Louis; Blaser, Annika Reintam; Hollenberg, Steven M; Lobo, Suzana M; Rezende, Ederlon; Moreno, Rui; ... Lakbar, Inès; + view all (2025) Association of noradrenaline dose with mortality in critically ill patients: a systematic review and dose-response meta-analysis. Critical Care , 29 (1) , Article 498. 10.1186/s13054-025-05717-9. Green open access

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Abstract

BACKGROUND: Noradrenaline is currently the first-line vasopressor in treatment of circulatory failure. Its dose reflects illness severity, and together with dopamine, dobutamine and adrenaline, it is used in the Sequential Organ Failure Assessment (SOFA) score to grade cardiovascular dysfunction. Over the years, noradrenaline use has increased and it has largely replaced dopamine. As part of the SOFA-2 update, we conducted a systematic review and dose-response meta-analysis to assess the association between noradrenaline dose and mortality. METHODS: We searched MEDLINE, Embase, and Web of Science from 1 January 2013 to 30 October 2024 for studies reporting mortality by noradrenaline dose in critically ill adults. The primary outcome was mortality. We generated pooled relative risks (RR) and assessed linear and non-linear dose-response relationships. Mortality was also analysed by SOFA-2 noradrenaline categories. The study followed PRISMA guidelines and was registered with PROSPERO (CRD42024501533). RESULTS: Nineteen studies, including totally 29,935 patients, were included in the systematic review, and six in the meta-analysis. We observed a consistent increase in mortality: the relative risk escalated by a factor of 1.5 for every 0.1 µg/kg/min increase in peak noradrenaline dose. We did not find inflection points in the dose-mortality curve. In SOFA-2 categories, hospital mortality was 16.5% in the dose category ≤ 0.2 µg/kg/min, 31.9% in the category > 0.2 to 0.4 µg/kg/min, and 40.3% in the category > 0.4 µg/kg/min (p < 0.001). CONCLUSIONS: In critically ill patients, escalating doses of noradrenaline correlate with an exponentially rising relative risk of mortality. This dose-dependent pattern reinforces the role of noradrenaline dose as a marker of cardiovascular failure severity.

Type: Article
Title: Association of noradrenaline dose with mortality in critically ill patients: a systematic review and dose-response meta-analysis
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1186/s13054-025-05717-9
Publisher version: https://doi.org/10.1186/s13054-025-05717-9
Language: English
Additional information: This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.
Keywords: Cardiovascular, Critical care, Intensive care, Mortality, Noradrenaline, SOFA-2, Humans, Norepinephrine, Critical Illness, Dose-Response Relationship, Drug, Organ Dysfunction Scores, Vasoconstrictor Agents, Mortality
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine
URI: https://discovery.ucl.ac.uk/id/eprint/10218708
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