Relation between gastroduodenal interdigestive migrating motor complex and postoperative gastrointestinal symptoms before and after cisapride therapy following distal gastrectomy for early gastric cancer.

A total of 30 patients (18 men, 12 women; 43-79 years, mean 58.9 years) 1.0 to 1.5 years (mean 1.25 years) after distal gastrectomy for early gastric cancer (Billorth I, D2 lymph node dissection, curability A) were divided into two groups based on the occurrence of interdigestive migrating motor complex (IMMC) phase III (pIII) from the duodenum and their postoperative gastrointestinal symptoms. They were compared before and after cisapride therapy (at an oral dose of 7.5 mg/day for 3 months). Results were as follows. Before cisapride therapy: (1) Patients in the IMMC-pIII-positive group (n = 20) had more appetite and ate more food with less decrease in body weight than those in the IMMC-pIII-negative group (n = 10); (2) patients in the IMMC-pIII-positive group clearly had fewer symptoms, such as early dumping (systemic) symptoms, symptoms of reflux esophagitis (e.g., heartburn, feeling of regurgitation, difficult swallowing), nausea, abdominal pain, diarrhea, abdominal distension, and borborygmus, than the IMMC-pIII-negative group. After cisapride therapy: eight patients (80%) in the IMMC-pIII-negative group became IMMC-pIII-positive, and their appetite and food consumption were obviously improved; body weight increased in six patients (60%), with alleviation of other abdominal symptoms and disappearance of the early dumping syndrome. These results showed a more satisfactory condition in regard to gastrointestinal symptoms in the IMMC-pIII-positive group than in the IMMC-pIII-negative group. It is concluded that cisapride therapy results in the occurrence of IMMC-pIII and subsequently alleviates various abdominal symptoms, contributing to the improved postoperative gastrointestinal condition of patients after gastrectomy.