Refeeding Like Syndrome in Acute Disease

Background: Refeeding syndrome is conventionally connected to start of feeding after prolonged periods of semi-starvation and adaption. However, it is also described in acutely ill patients and in ICU patients without a history of adaption, but sometimes only defined as a drop in p-phosphate without clinical manifestations. The investigators hypothesize, that a positive sodium balance could induce the refeeding-like syndrome (RLS). Method: Consecutive patients for acute, abdominal surgery were included and observed until discharge or up to seven days postoperatively with daily sodium and phosphate balance measurements.