• Tian-Gen Ni, Han-Teng Yang, Hao Zhang, Hai-Peng Meng, and Bo Li.
• Tian-Gen Ni, Han-Teng Yang, Hao Zhang, Hai-Peng Meng, Bo Li, Department of Liver Surgery, Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu 610041, Sichuan Province, China.
• World J. Gastroenterol. 2015 Aug 14; 21 (30): 9209-16.

AimTo evaluate the impact of enhanced recovery after surgery (ERAS) programs in comparison with traditional care on liver surgery outcomes.MethodsThe PubMed, EMBASE, CNKI and Cochrane Central Register of Controlled Trials databases were searched for randomized controlled trials (RCTs) comparing the ERAS program with traditional care in patients undergoing liver surgery. Studies selected for the meta-analysis met all of the following inclusion criteria: (1) evaluation of ERAS in comparison to traditional care in adult patients undergoing elective open or laparoscopic liver surgery; (2) outcome measures including complications, recovery of bowel function, and hospital length of stay; and (3) RCTs. The following exclusion criteria were applied: (1) the study was not an RCT; (2) the study did not compare ERAS with traditional care; (3) the study reported on emergency, non-elective or transplantation surgery; and (4) the study consisted of unpublished studies with only the abstract presented at a national or international meeting. The primary outcomes were complications. Secondary outcomes were length of hospital stay and time to first flatus.ResultsFive RCTs containing 723 patients were included in the meta-analysis. In 10/723 cases, patients presented with benign diseases, while the remaining 713 cases had liver cancer. Of the five studies, three were published in English and two were published in Chinese. Three hundred and fifty-four patients were in the ERAS group, while 369 patients were in the traditional care group. Compared with traditional care, ERAS programs were associated with significantly decreased overall complications (RR = 0.66; 95%CI: 0.49-0.88; P = 0.005), grade I complications (RR = 0.51; 95%CI: 0.33-0.79; P = 0.003), and hospital length of stay [WMD = -2.77 d, 95%CI: -3.87-(-1.66); P < 0.00001]. Similarly, ERAS programs were associated with decreased time to first flatus [WMD = -19.69 h, 95%CI: -34.63-(-4.74); P < 0.0001]. There was no statistically significant difference in grade II-V complications between the two groups.ConclusionERAS is a safe and effective program in liver surgery. Future studies should define the active elements to optimize postoperative outcomes for liver surgery.

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