SUMMARY Eighteen patients with dyspepsia and vomiting which followed surgery for peptic ulcer have completed a study to examine the role of diverting bile from the stomach by a Roux-en-Y procedure. Bile regurgitation and mild epigastric pain relieved by vomiting were abolished. Measurements of bile acids in the fasting gastric aspirate were useful in predicting the outcome of surgery; good results were obtained when initially there was reflux into the stomach of more than 120 ,mol/hour of bile acids. A wider group of patients than those selected in previous series may benefit from this operation, as good results can be obtained in patients with dyspepsia relieved by alkali and without achlorhydria or gastritis. Endoscopy was repeated one year after Roux-en-Y operation. Erythema of the mucosa was improved, but gastritis did not improve.After gastric surgery, many patients experience discomfort associated with regurgitation or vomiting of bile which may persist for several years (Griffiths, 1974). Medical treatment, including cholestyramine, is unsatisfactory (Scudamore et al., 1973), so that reconstructive surgery with a Roux-en-Y operation has been used and may relieve dyspepsia and bile vomiting (Conyers et al., 1960;Coppinger et al., 1973;Herrington et al., 1974;van Heerden et al., 1975). Most series of patients have been selected and include those with epigastric pain unrelieved by alkali or food (van Heerden et al., 1975) 16 September 1977 gastric surgery at least one year previously and recurrent ulceration or biliary disease had been excluded as a cause of their symptoms. Three were women and the average age was 50 years (range 33-66 years). The previous gastric operations were vagotomy and pyloroplasty in four, vagotomy and gastroenterostomy in two, vagotomy and antrectomy in three, Billroth I partial gastrectomy in two, and Billroth II in seven. On average the first operations had been performed 7-4 years ago (range one to 39 years). Ten patients had already had one unsuccessful revision operation that had not accomplished bile diversion. al., 1977b). The severity of the patient's symptoms were assessed by one physician, and the biopsies were examined without knowledge of their order by one person (H.T.) using the criteria of Whitehead et al. (1972) for the stomach and Ismail-Beigi et al. (1970) for the oesophagus.At operation a Roux-en-Y reconstruction was performed with the afferent loop of jejunum anastomosed to the side of the efferent loop at least 45 cm distal to the gastrojejunal stoma. If the insulin test 163 on 9 May 2018 by guest. Protected by copyright.