[Motility of the jejunal replacement stomach]

The food retaining and reservoir-function of the intestinal pouch seems to be characterized by the following mechanism: After being filled with a few foodboli arriving from the oesophagus, segmentary contractions arise and thus continuously propulse the food into the duodenum. In other words the interposed jejunal-loop, due to its decreased motility, rather represents a physiological restraint to the chyme passage, than a real food reservoir. For mixing, predigestion and food-storage the duodenum is more apt, as clinical studies could demonstrate. Furthermore we have shown that any type of surgical manipulation concerning the intestine has severe effects regarding its mechanical activity. This should always be kept in mind when performing Roux-en-Y-anastomosis, correctly intestinal atresia or planning a jejunal by-pass.