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[Refeeding syndrome. A review].

Refeeding syndrome is a complex clinical picture that encompass all those alterations that can occur as a consequence of the nutritional support (oral, enteral or parenteral) in malnourished patients. Refeeding syndrome is classically characterized by neurological alterations, respiratory symptoms, cardiac arrhythmias and heart failure few days after beginning of refeeding, with life-threatening outcome. Its pathogenesis includes alterations in the corporal fluids, and in some electrolytes, minerals and vitamins. In this article a review of refeeding syndrome pathogenesis and clinical manifestations is carried out, with a final series of recommendations for lowering the risk of this syndrome and for facilitate the early diagnosis and the treatment.