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. 2025 May;49(4):405-413.
doi: 10.1002/jpen.2748. Epub 2025 Mar 31.

Recognizing malnutrition in adults with critical illness: Guidance statements from the Global Leadership Initiative on Malnutrition

Affiliations

Recognizing malnutrition in adults with critical illness: Guidance statements from the Global Leadership Initiative on Malnutrition

C W Compher et al. JPEN J Parenter Enteral Nutr. 2025 May.

Abstract

Background: Patients with critical illness may present with disease-related malnutrition upon intensive care unit (ICU) admission. They are at risk of development and progression of malnutrition over the disease trajectory because of inflammation, dysregulated metabolism, and challenges with feeding.

Methods: The Global Leadership Initiative on Malnutrition (GLIM) convened a panel of 36 clinical nutrition experts to develop consensus-based guidance statements addressing the diagnosis of malnutrition during critical illness using a modified Delphi approach with a requirement of ≥75% agreement.

Results: (1) To identify pre-existing malnutrition, we suggest evaluation within 48 h of ICU admission when feasible (100% agreement) or within 4 days (94% agreement). (2) To identify the development and progression of malnutrition, we suggest re-evaluation of all patients every 7-10 days (97% agreement). (3) To identify progressive loss of muscle mass, we suggest evaluation of muscle mass as soon as feasible (92% agreement) and again after 7-10 days (89% agreement). (4) To identify the development and progression of malnutrition before and after ICU discharge, we suggest re-evaluating nutrition status before ICU discharge and during clinical visits that follow (100% agreement).

Conclusion: Research using consistent etiologic and phenotypic variables offers great potential to assess the efficacy of nutrition interventions for critically ill patients with malnutrition. Assessment of these variables during and beyond the ICU stay will clarify the trajectory of malnutrition and enable exploration of impactful treatment modalities at each juncture. GLIM offers a diagnostic approach that can be used to identify malnutrition in critically ill patients.

Keywords: Global Leadership Initiative on Malnutrition; ICU; malnutrition; muscle mass.

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Conflict of interest statement

None declared.

References

    1. Vallejo KP, Martínez CM, Matos Adames AA, et al. Current clinical nutrition practices in critically ill patients in Latin America: a multinational observational study. Crit Care. 2017;21(1):227. 10.1186/s13054-017-1805-z - DOI - PMC - PubMed
    1. Canales C, Elsayes A, Yeh DD, et al. Nutrition Risk in Critically Ill versus the Nutritional Risk Screening 2002: are they comparable for assessing risk of malnutrition in critically ill patients? JPEN J Parenter Enteral Nutr. 2019;43(1):81‐87. 10.1002/jpen.1181 - DOI - PubMed
    1. Lew CCH, Yandell R, Fraser RJL, Chua AP, Chong MFF, Miller M. Association between malnutrition and clinical outcomes in the intensive care unit: a systematic review. JPEN J Parenter Enteral Nutr. 2017;41(5):744‐758. 10.1177/0148607115625638 - DOI - PubMed
    1. Lew CCH, Lee ZY, Day AG, et al. The association between malnutrition and high protein treatment on outcomes in critically ill patients. Chest. 2024;165(6):1380‐1391. 10.1016/j.chest.2024.02.008 - DOI - PubMed
    1. Chapple LS, Kouw IWK, Summers MJ, et al. Muscle protein synthesis after protein administration in critical illness. Am J Respir Crit Care Med. 2022;206(6):740‐749. 10.1164/rccm.202112-2780OC - DOI - PubMed