Detailed Instructions: Given a passage with a context and an answer, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.
Q: Context: To reduce cholangitis after pancreaticoduodenectomy (PD), we perform 'hepaticoplasty', in which the left side of the bile duct is cut to widen the diameter of the bile duct wall before hepaticojejunostomy. The aim of this study was to clarify the usefulness of hepaticoplasty to reduce cholangitis after PD.", 'From January 2002 through December 2010, 161 patients underwent PD and were enrolled in this study. Patient demographics, surgical factors, and clinical and biochemical parameters were evaluated to examine the factors predictive of cholangitis after PD and confirm the usefulness of hepaticoplasty.', 'Cholangitis after PD occurred in 13 patients (8.1%). Multivariate analysis revealed that the ratio of the postoperative bile duct diameter to that before surgery was the only independent risk factor for cholangitis after PD (p=0.0012). In the small bile duct group, in which the diameter was 15mm before surgery (n=99), hepaticoplasty reduced the narrowing of the bile duct after PD, and no cholangitis occurred. There were no complications related to hepaticoplasty.
Answer: The ratio of postoperative reduction of the bile duct diameter to that before surgery was found to be the only risk factor for cholangitis after PD. Patients with a small bile duct of 15mm in diameter preoperatively might benefit from hepaticoplasty to widen the bile duct diameter and prevent cholangitis after PD.
A:
Does hepaticoplasty prevent cholangitis after pancreaticoduodenectomy in patients with small bile ducts?