Reduced protocol compliance was the most frequently identified modifiable predictive factor for adverse LOS , morbidity and readmission .
Conclusion Protocol compliance is the most frequently reported predictive factor for outcomes of ERAS programmes following laparoscopic colorectal resection .
Reduced compliance increases LOS , morbidity and readmission to hospital .
The impact of compliance with individual ERAS protocol elements is insufficiently studied , and the lack of a st and ardised framework for evaluating ERAS programmes makes it difficult to draw definite conclusions about which factors exert the greatest impact on outcome after laparoscopic colorectal resection
Objective To perform a systematic review of published literature for the factors reported to predict outcomes of enhanced recovery after surgery ( ERAS ) programmes following  laparoscopic colorectal surgery .
Background ERAS programmes and the use of laparoscopy have been widely adopted in colorectal surgery bringing short-term patient benefit .
However , there is a minority of patients that do not benefit from these strategies and their identification is not well characterised .
The factors that underpin outcomes from ERAS programmes for laparoscopic patients are not understood .
Enhanced Recovery After Surgery (ERAS) Program Attenuates Stress and Accelerates Recovery in Patients After Radical Resection for Colorectal Cancer: A Prospective Randomized Controlled Trial
Background The aim of this trial was to compare the Enhanced Recovery After Surgery ( ERAS ) program with conventional perioperative management in patients who underwent radical resection for colorectal cancer . Methods A combination of evidence -based and consensus methodology was used to develop the ERAS protocol . Five hundred ninety-seven consecutive patients who underwent elective colorectal resection were r and omized to either the ERAS ( n = 299 ) or the  control group ( n = 298 ) . Outcomes relating to nutrition and metabolism index , stress index , and recovery index were measured and recorded . Results Demographic and operative data were similar between the two groups . Patients in the ERAS group showed improved nutritional status when compared with those of the control group . On postoperative day ( POD ) 1 , the HOMA-IR ( insulin resistance index ) of the ERAS group was lower than that of the control group ( p < 0.001 ) . The cortisol level of the control group was elevated on both POD 1 ( p = 0.007 ) and POD 5 ( p = 0.002 ) compared to the preoperative level . However , the cortisol level of the ERAS group was not increased until POD 5 ( p = 0.001 ) . Reduced levels of TNF-α , IL-1β , IL-6 , and IFN-γ in the ERAS group indicated less postoperative stress responses . In addition , ERAS was associated with accelerated recovery of gastrointestinal function . The postoperative length of stay ( p < 0.001 ) and expense ( p < 0.001 ) for the ERAS group were reduced in comparison to the controls . Twenty-eight cases in the control group and twenty-nine in the ERAS group suffered complications , which was not significantly different . Conclusion The ERAS protocol attenuates the surgical stress response and accelerates postoperative recovery without compromising patient safety
Reduced protocol compliance was the most frequently identified modifiable predictive factor for adverse LOS , morbidity and readmission .
Conclusion Protocol compliance is the most frequently reported predictive factor for outcomes of ERAS programmes following laparoscopic colorectal resection .
Reduced compliance increases LOS , morbidity and readmission to hospital .
The impact of compliance with individual ERAS protocol elements is insufficiently studied , and the lack of a st and ardised framework for evaluating ERAS programmes makes it difficult to draw definite conclusions about which factors exert the greatest impact on outcome after laparoscopic colorectal resection
Objective To perform a systematic review of published literature for the factors reported to predict outcomes of enhanced recovery after surgery ( ERAS ) programmes following  laparoscopic colorectal surgery .
Background ERAS programmes and the use of laparoscopy have been widely adopted in colorectal surgery bringing short-term patient benefit .
However , there is a minority of patients that do not benefit from these strategies and their identification is not well characterised .
The factors that underpin outcomes from ERAS programmes for laparoscopic patients are not understood .