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Bile diversion from the duodenum: its effect on gastric and pancreatic function.

The effect of diverting bile from the duodenum in four dogs by cholecysto-jejunostomy was studied using a double-marker perfusion technique. During digestion of a liquid meal, acid secretion increased from 0.8 mmol H+/min to 1.48 mmol H+/min (p less than 0.05, paired t test); there was an associated rise in serum levels of gastrin 120 minutes after feeding (p less than 0.001, paired t test). Pancreatic secretion of trypsin decreased from 3.91 IU/min to 2.66 IU/min after bile diversion (p less than 0.01, paired t test) and the level of CCK was significantly lower 60 mins after feeding (p less than 0.05, paired t test). There was no significant change in the rate at which the liquid meal emptied from the stomach after bile diversion but the pH of duodenal contents was lower during the later stages of digestion. These changes may explain the reported increase of peptic ulcer after diverting bile from the duodenum and the procedure should not be considered unless the consequences of acid hypersecretion and pancreatic inhibition have been anticipated.