Postoperative ileus (POI) is a serious complication after surgery. While it complicates all type of surgery, it is more frequent after abdominal surgery (especially bowel or colorectal surgery). Many studies aim to reduce the occurence of POI without efficiency. The aim of this study is to assess the efficiency of the vagal stimulation, by the mean of chewing, to reduce the duration of POI.
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To assess the efficiency of chewing gum in reducing the duration of POI. POI is defined by the criteria of Vather from the postoperative day 1 up to day 30
Timeframe: collected each day until the end of the POI, assessed up to day 21