Evaluation of effect of Braun enteroenterostomy on the postoperative outcomes after pylorus-preserving pancreatoduodenectomy : a randomized controlled trial

INTERVENTION: With Braun enteroenterostomy Without Braun enteroenterostomy CONDITION: Periampullary diseases (Malignancy) PRIMARY OUTCOME: Incidence of delayed gastric emptying SECONDARY OUTCOME: Incidence of anastomotic site ulceration, operation time, postoperative hospital stay, symptoms INCLUSION CRITERIA: (1) The patients aged 20 years and older (2) The patients who are scheduled for elective surgery (3) The patients who will undergo PPPD under general anesthesia (4) The patients who have PS 2 and under (5) The patients who have ASA‐PS 3 and under (6) The patients who fully agree to this trial