[Benefits of an education program and a clinical algorithm in mixed nutritional support to improve nutrition for the critically ill patient: a before-and-after study].

Introduction: optimal nutrition in the critically ill patient is a key aspect for recovery. Objectives: to promote training in and knowledge of mixed nutrition support (MNS) by means of a clinical algorithm among intensivists for improving the nutritional status of critically ill patients. Methods: a before-and-after study with the participation of 19 polyvalent intensive care units (ICUs) in 10 autonomous communities.