BACKGROUND Postgastrectomy syndromes (PGS) after curative gastrectomy for gastric cancer are influenced by not only gastrectomy type but also by background factors. Recently, a nationwide PGS study was performed using the Postgastrectomy Syndrome Assessment Scale-45 (PGSAS-45) questionnaire. AIM To determine the influence of each background factor on PGS for each gastrectomy type using PGS assessment study (PGSAS) data as an additional analysis. METHODS The data of 2368 patients were obtained from the PGSAS. This included patients undergoing distal gastrectomy (DG) with Billroth I reconstruction, DG with Roux-en-Y reconstruction, total gastrectomy with Roux-en-Y, proximal gastrectomy, pylorus-preserving gastrectomy (PPG), and local resection. Multiple regression analysis was performed to explore the independent effects of each background factor on the main outcome measures (MOMs) of PGSAS-45 for each gastrectomy type. The background factors included postoperative period, age, sex, surgical approach (laparoscopic or open), and the status of the celiac branch of the vagal nerve. RESULTS The MOMs of DG and PPG were highly affected by background factors, whereas those of total gastrectomy with Roux-en-Y, proximal gastrectomy, and local resection were not. Worse PGS were found in females, whereas a longer postoperative period alleviated some of the MOMs. For DG and PPG, a laparoscopic approach and preservation of the celiac branch improved several MOMs. CONCLUSION Various background factors affected PGS, and their influence varied with the type of gastrectomy performed. Laparoscopic surgery and celiac branch preservation can improve PGS in patients undergoing DG and PPG.
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