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VOLUME 21 , ISSUE 6 ( 2017 ) > List of Articles

Meta-analysis

Effect of calories delivered on clinical outcomes in critically ill patients: Systemic review and meta-analysis

Legese Chelkeba, Mojtaba Mojtahedzadeh, Zeleke Mekonnen

Keywords : Critically ill patients, enteral nutrition, high calorie, low calorie, overall mortality, supplemental parenteral nutrition

Citation Information : Chelkeba L, Mojtahedzadeh M, Mekonnen Z. Effect of calories delivered on clinical outcomes in critically ill patients: Systemic review and meta-analysis. Indian J Crit Care Med 2017; 21 (6):376-390.

DOI: 10.4103/ijccm.IJCCM_453_16

License: CC BY-ND 3.0

Published Online: 01-06-2017

Copyright Statement:  Copyright © 2017; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Introduction: International guidelines are promoting early enteral nutrition (EN) as a means of feeding critically ill adult patients to improve clinical outcomes. The question of how much calorie intake is enough to improve the outcomes still remained inconclusive. Therefore, we carried out a meta-analysis to evaluate the effect of low calorie (LC) versus high calorie (HC) delivery on critically ill patients\' outcomes. Methods: We included randomized clinical trials (RCTs) that compared LC EN with or without supplemental parenteral nutrition with HC delivery in this meta-analysis irrespective of the site of nutritional delivery in the gastrointestinal tract. We searched PubMed, EMBASE, and Cochrane central register of controlled trials electronic databases to identify RCTs that compared the effects of initially different calorie intake in critical illness. The primary outcome was overall mortality. Results: This meta-analysis included 17 RCTs with a total of 3,593 participants. The result of analysis showed that there was no significant difference between the LC group and HC group in overall mortality (risk ratio [RR], 0.98; 95% confidence interval [CI], 0.87–1.10; P = 0.74; I2 = 6%; P = 0.38), or new-onset pneumonia (RR, 0.92; 95% CI, 0.73–1.16, P = 0.46; I2 = 38%, P = 0. 11). Conclusion: The current meta-analysis showed that there was no significant difference in mortality of critically ill patients initially between the two groups.


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