Safety and efficacy of early feeding based on clinical assessment at 4 hours after ERCP: a prospective randomized controlled trial

Early feeding in patients without abdominal pain and tenderness and a serum amylase level <1.5-fold the upper limit of normal at 4 hours after ERCP does not increase the incidence of PEP after ERCP and decreases medical costs. (Clinical trial registration number: KCT0002354.)