Faecal fat and body weight changes following Roux en Y and jejunal loop interposition reconstructive technique in total gastrectomized dogs

Total gastrectomy is one of the most common operative procedures for gastric malignancy, but therecommended method of gastrointestinal reconstruction after gastrectomy is still controversial. Significantweight loss has been noted by many observers following gastrectomy. The Roux en Y method is the mostfrequent reconstructive technique performed after gastrectomy. This technique is easy to perform andprevents reflux esophagitis, but the major disadvantage of the technique is bypassing of the duodenum from the transit of food. This study was performed to compare two reconstructive techniques (the standard Rouxen Y and jejunal loop interposition) after gastrectomy, considering post operative body weight loss in 10 healthy dogs. In group A, Roux en Y, following gastrectomy end to side anastomosis was performedbetween the distal jejunal end and remained part of the stomach. In group B, jejunal loop interposition, a 20cm section of jejunal loop was resected and interposition of the loop was performed between the remainingpart of the stomach and the deudenum. The patients were weighed before and after surgery until 30 dayspostoperatively and their weights were recorded daily. Also, faecal fat was measured on day 28postoperatively. No fat was detected in faecal sles in group B, however different amounts of fat weremeasured in group A. Mean of preoperative weight was 28 ± 3 kg. Data indicates a significant difference inmean of body weights in both groups pre and post operatively (P 0.05). Mean percentage of body weightswas significantly lower 67.18% ± 4.4 in group A compared to group B (73.05% ± 3.9) (P=0.04), which canindicate the importance of duodenal passage in reduction of post operative body weight loss.