• Claudia Moeller, Carolin Fleischmann, Daniel Thomas-Rueddel, Vlasislav Vlasakov, Bram Rochwerg, Philip Theurer, Luciano Gattinoni, Konrad Reinhart, and Christiane S Hartog.
• Department for Anesthesiology and Intensive Care, Jena University Hospital, Jena, Germany.
• J Crit Care. 2016 Oct 1; 35: 75-83.

AbstractGelatin is a widely used synthetic colloid resuscitation fluid. We undertook a systematic review and meta-analysis of adverse effects in randomized and nonrandomized studies comparing gelatin with crystalloid or albumin for treatment of hypovolemia. Multiple databases were searched systematically without language restrictions until August 2015. We assessed risk of bias of individual studies and certainty in evidence assessment by the Grading of Recommendations Assessment, Development, and Evaluation approach. Sixty studies were eligible, including 30 randomized controlled trials, 8 nonrandomized studies, and 22 animal studies. After gelatin administration, the risk ratios were 1.15 (95% confidence interval, 0.96-1.38) for mortality, 1.10 (0.86-1.41) for requiring allogeneic blood transfusion, 1.35 (0.58-3.14) for acute kidney injury, and 3.01 (1.27-7.14) for anaphylaxis. Well-performed nonrandomized trials found increased rates of hospital mortality and acute kidney injury or renal replacement therapy in the gelatin intervention periods. Between 17% and 31% of administered gelatin was taken up extravascularly. The mean crystalloid-to-colloid ratio was 1.4. Gelatin solutions increase the risk of anaphylaxis and may be harmful by increasing mortality, renal failure, and bleeding possibly due to extravascular uptake and coagulation impairment. Until well-designed randomized controlled trials show that gelatin is safe, we caution against the use of gelatins because cheaper and safer fluid alternatives are available.Copyright © 2016 Elsevier Inc. All rights reserved.

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