Effect of perioperative glucocorticoid administration on postoperative complications following esophagectomy: A meta-analysis

Perioperative corticosteroid administration is a controversial therapy for improving the short-term prognosis following surgery. The objective of the current meta-analysis was to evaluate the effects of the perioperative use of corticosteroids during esophagectomy for esophageal carcinoma. A comprehensive study was performed using references selected from the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, MEDLINE (Ovid databases), EMBASE and three Chinese databases (Chinese Biomedical Literature Database, Chinese National Knowledge Infrastructure and VIP Database for Chinese Technical Periodicals). Eligible studies were restricted to randomized clinical trials that reported data from patients undergoing esophagectomy. In addition, treated groups of patients received perioperative corticosteroid administration and control groups received a placebo infusion, such as saline water. The studies evaluated the incidence of postoperative complications and the variation of inflammatory mediators. All extracted data underwent meta-analysis using Review Manager 5.1 software. Only six studies were eligible for selection. The following parameters were found to be reduced following the use of methylprednisolone: Interleukin (IL)-6 immediately following surgery and on postoperative days (PODs) 1 and 3; IL-8 immediately following surgery; and Pa[O.sub.2]/Fi[O.sub.2] on POD 3. Moreover, organ failure, cardiovascular complications and pulmonary morbidity were all reduced in patients with corticosteroid usage. Certain factors showed no significant differences between the treated and control groups, including IL-8 on POD 1, IL-6 prior to surgery and on POD 5, Pa[O.sub.2]/Fi[O.sub.2] following surgery, mortality, anastomotic leakage, severe infection and renal and hepatic failure. Prophylactic administration of methylprednisolone during the perioperative period may reduce the incidence of specific types of postoperative complications and inhibit the postoperative inflammatory reaction. Additional randomized controlled trials must be performed. Key words: esophageal neoplasms, postoperative complications, glucocorticoids