Risk factors of the postoperative 30-day readmission of gastric cancer surgery after discharge: A PRISMA-compliant systematic review and meta-analysis

Background:Readmission is a common postoperative adverse event. This study aimed to analyze potential risk factors for the incidence of postoperative 30-day readmission after discharge for gastric cancer patients with surgical treatment.Methods:Those studies that reported the risk factors of gastric cancer patients who have a postoperative 30-day readmission were identified systematically from the PubMed, Cochrane, and Embase databases through July 2018. A systematic review and meta-analysis was performed to estimate the risk factors of postoperative 30-day readmission after gastric cancer surgery.Results:Ultimately, 6 studies with 12,586 gastric cancer patients were included in the present study. There were 1473 (11.7%) patients who had postoperative 30-day readmission and 12,586 (88.3%) patients without 30-day postoperative readmission. A greater proportion of the readmission group had cardiovascular comorbidity (P<.001), pulmonary comorbidity (P<.001), and diabetes mellitus (P=.020) than the nonreadmission group. Furthermore, more patients in the readmission group had total gastrectomy (P<.001), combined organ resection (P<.001) and postoperative complications (P<.001) than did patients in the nonreadmission group. Nonhome discharge (odds ratio [OR] 1.580, P=.002), diabetes mellitus (OR 1.181, P=.044), postoperative complications (OR 2.656, P=.006), total gastrectomy (OR 2.242, P<.001), and combined organ resection (OR 1.534, P<.001) were independent risk factors for postoperative readmission.Conclusion:Postoperative readmission is influenced by the synthetic action of preparative, intraoperative, and postoperative factors, such as diabetes mellitus, total gastrectomy, combined organ resection, nonhome discharge, and postoperative complications. Extra attention should be paid to those patients with high risk factors during the postoperative follow-up and recovery periods.