GASTRIC-MOTILITY FOLLOWING ESOPHAGECTOMY

The motility of the vagally denervated transposed stomach after oesoph agectomy was examined by ambulatory gastric manometry and videofluoros copy. Two groups of subjects were studied. Group 1 comprised ten patie nts who had undergone oesophagectomy 6-12 months previously and group 2 consisted of six normal control subjects. Studies were performed on fasting and fed subjects, and following injection of erythromycin 8 mg /kg. No distinguishable manometric wave activity was seen in either gr oup while fasting. Feeding generated a measurable wave pattern in the patient group only. A significant increase in the mean(s.e.m) distal w ave amplitude was identified after infusion of erythromycin in both pa tients (34.0(15.1) versus 12.2(3.1) mmHg, P<0.05) and controls (15.1(3 .4) versus 5.0(0.0) mmHg, P=0.05). The response to erythromycin was mo re rapid in patients than in controls (mean(s.e.m.) 113(16) versus 377 (133)s, P<0.05) and the effect persisted for longer (more than 1 h) in those who had undergone oesophagectomy. Video fluoroscopy confirmed p urposeful motility in both the normal and vagally denervated stomach. It is concluded that the transposed stomach is a dynamic conduit. Enha ncement of motility was greatest in the denervated stomach, indicative of denervation supersensitivity.