The impact of enhanced recovery on open and laparoscopic liver resections.

Enhanced recovery after surgery programs (ERP) have been implemented in many surgical specialties. Their impact in liver surgery is poorly understood and approach-specific ERPs have not yet been assessed. This retrospective study aims to analyse the effect of such programs on liver resection. All patients undergoing liver resection at a tertiary referral centre between January 2009 and April 2019 were identified. Primary outcome was the length of stay (LOS), secondary outcomes were functional recovery, complications and readmission rates. Patients in the ERP with different protocols for open, laparoscopic, major and minor resections were compared to a historical cohort. Of 1056 patients, 644 were treated within the ERP. A comparable duration of hospital stay [7 days (IQR (interquartile range) 6-12) vs 7 days (IQR 5-9) p = 0.047] and faster functional recovery with fewer complications was found in the ERP group [94 (50.5%) vs 103 (35.9%) p < 0.002]. Those advantages were smaller after open minor compared to open major resection. In patients undergoing laparoscopic resection no differences were observed except for a lower readmission rate [21 (9.3%) vs 13 (3.6%) p = 0.005]. Multivariable analysis showed that laparoscopy was associated with a shorter LOS. ERPs offer significant advantages in open liver surgery. Those advantages are less evident after laparoscopic resection.