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Clinical Nutrition in Critical Care Medicine - Guideline of the German Society for Nutritional Medicine (DGEM).

Department of Anesthesiology and Intensive Care Medicine, University Medical Center Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 3, Haus 12, 24105, Kiel, Germany. Electronic address: gunnar.elke@uksh.de. Department of Surgery, University School of Medicine, Grosshadern Campus, Ludwig-Maximilian University, Marchioninistr. 15, 81377 Munich, Germany. Electronic address: wolfgang.hartl@med.uni-muenchen.de. Flemingstraße 2, 22299, Hamburg, Germany. Electronic address: kreymann@uke.de. University Department of Anesthesiology and Intensive Care Medicine, University Hospital Tübingen, Hoppe-Seyler-Straße 3, 72076, Tübingen, Germany. Electronic address: michael.adolph@med.uni-tuebingen.de. Department of Anesthesiology, Critical Care and Pain Medicine, Neuperlach and Harlaching Medical Center, The Munich Municipal Hospitals Ltd, Oskar-Maria-Graf-Ring 51, 81737, Munich, Germany. Electronic address: thomas.felbinger@klinikum-muenchen.de. Medical Clinic II, University Heart Center Lübeck, University Medical Center Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany. Electronic address: tobias.graf@uksh.de. Center for Anesthesiology and Intensive Care Medicine, Clinic for Intensive Care Medicine, University Hospital Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany. Electronic address: deheer@uke.de. Clinic for Anesthesiology and Surgical Intensive Care Medicine, University of Augsburg, Stenglinstrasse 2, 86156, Augsburg, Germany. Electronic address: Axel.Heller@klinikum-augsburg.de. Clinic for Anesthesiology, Lutheran Hospital Hattingen, Bredenscheider Strasse 54, 45525, Hattingen, Germany. Electronic address: kampa@krankenhaus-hattingen.de. Department of Internal Medicine, Justus-Liebig University Giessen, University of Giessen and Marburg Lung Center, Klinikstr. 36, 35392, Gießen, Germany. Electronic address: Konstantin.Mayer@innere.med.uni-giessen.de. Eichhörnchenweg 7, 23627, Gross Grönau, Germany. Electronic address: elke045091252-0001@t-online.de. Department of Adult and Pediatric Cardiovascular Surgery, Giessen University Hospital, Rudolf-Buchheim-Str. 7, 35392, Gießen, Germany. Electronic address: bernd.niemann@chiru.med.uni-giessen.de. Clinic for Anesthesia and Surgical Intensive Care Medicine, HELIOS St. Elisabeth Hospital Bad Kissingen, Kissinger Straße 150, 97688, Bad Kissingen, Germany. Electronic address: an.ruemelin@gmx.de. Department of Cardiology, Pneumology and Intensive Care Medicine, St Vincenz Hospital Limburg, Auf dem Schafsberg, 65549, Limburg, Germany. Electronic address: s.steiner@st-vincenz.de. Department of Intensive Care Medicine and Intermediate Care, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany. Electronic address: cstoppe@ukaachen.de. Department of General, Visceral and Oncological Surgery, Klinikum St. Georg, Delitzscher Straße 141, 04129, Leipzig, Germany. Electronic address: Arved.Weimann@sanktgeorg.de. Department for Nutritional Medicine, University of Hohenheim, Fruwirthstr. 12, 70599, Stuttgart, Germany. Electronic address: bischoff.stephan@uni-hohenheim.de.

Clinical nutrition ESPEN. 2019;:220-275
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Abstract

PURPOSE Enteral and parenteral nutrition of adult critically ill patients varies in terms of the route of nutrient delivery, the amount and composition of macro- and micronutrients, and the choice of specific, immune-modulating substrates. Variations of clinical nutrition may affect clinical outcomes. The present guideline provides clinicians with updated consensus-based recommendations for clinical nutrition in adult critically ill patients who suffer from at least one acute organ dysfunction requiring specific drug therapy and/or a mechanical support device (e.g., mechanical ventilation) to maintain organ function. METHODS The former guidelines of the German Society for Nutritional Medicine (DGEM) were updated according to the current instructions of the Association of the Scientific Medical Societies in Germany (AWMF) valid for a S2k-guideline. According to the S2k-guideline classification, no systematic review of the available evidence was required to make recommendations, which, therefore, do not state evidence- or recommendation grades. Nevertheless, we considered and commented the evidence from randomized-controlled trials, meta-analyses and observational studies with adequate sample size and high methodological quality (until May 2018) as well as from currently valid guidelines of other societies. The liability of each recommendation was described linguistically. Each recommendation was finally validated and consented through a Delphi process. RESULTS In the introduction the guideline describes a) the pathophysiological consequences of critical illness possibly affecting metabolism and nutrition of critically ill patients, b) potential definitions for different disease phases during the course of illness, and c) methodological shortcomings of clinical trials on nutrition. Then, we make 69 consented recommendations for essential, practice-relevant elements of clinical nutrition in critically ill patients. Among others, recommendations include the assessment of nutrition status, the indication for clinical nutrition, the timing and route of nutrient delivery, and the amount and composition of substrates (macro- and micronutrients); furthermore, we discuss distinctive aspects of nutrition therapy in obese critically ill patients and those treated with extracorporeal support devices. CONCLUSION The current guideline provides clinicians with up-to-date recommendations for enteral and parenteral nutrition of adult critically ill patients who suffer from at least one acute organ dysfunction requiring specific drug therapy and/or a mechanical support device (e.g., mechanical ventilation) to maintain organ function. The period of validity of the guideline is approximately fixed at five years (2018-2023).