• Amir Y Kamel.
• Department of Pharmacy, UF Health Shands Hospital, University of Florida College of Pharmacy, Gainesville, Florida, USA.
• Curr Opin Crit Care. 2024 Apr 1; 30 (2): 186192186-192.

Purpose Of ReviewRecent changes in guidelines recommendation during early phase of critical illness and use of indirect calorimetry. The aim of this review is to discuss methods of determining energy requirements in the critically ill and highlight factors impacting resting energy expenditure.Recent FindingAn appraisal of recent literature discussing indirect calorimetry guided-nutrition potential benefits or pitfalls. Recent attempts to devise strategy and pilot indirect calorimetry use in the critically ill patients requiring continuous renal replacement therapy or extracorporeal membrane oxygenation are also discussed. Additionally, we briefly touched on variability between guidelines recommended energy target and measured energy expenditure for adult critically ill patients with obesity.SummaryWhile energy requirement in the critically ill continues to be an area of controversy, recent guidelines recommendations shift toward providing less aggressive calories during acute phase of illness in the first week of ICU.Use of indirect calorimetry may provide more accurate energy target compared to the use of predictive equations. Despite the absence of literature to support long term mortality benefits, there are many potential benefits for the use of indirect calorimetry when available.Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.

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