Table 1.

Search strategy according to populations, interventions, comparators, outcomes, and study designs (PICOS).

	Population	Intervention	Comparator	Outcomes	Study Design
Inclusion Criteria	Patients underwent radical cystectomy.	Enhanced Recovery After Surgery (ERAS) protocol	Conventional recovery after surgery (CRAS) protocol	Length of hospital stay. Time to first flatus. Time to first bowel movement. Time to regular diet. Complications, Readmission, Ileus, Wound infection, Mortality.	Randomized Controlled Trials
Exclusion Criteria	Patients underwent transurethral resection of the bladder tumor. Patients with other concomitant malignancies. Patients with mental or cognitive disorders. Patients with a history of radiotherapy. Patients with gastrointestinal disease affecting feeding.	Not performed	Not performed	Leakage of urine. Deep venous thrombosis. Diarrhea. Hydronephrosis. Cardiovascular disease. Lung emboli.	Letters, comments, reviews, qualitative studies