Abstract

Historically, pre-operative biliary stenting has been associated with higher infectious complication rates following pancreatoduodenectomy. However, alleviation of biliary obstruction is necessary for consideration of pre-operative chemotherapy, which may improve disease-free survival, or for mitigation of symptoms while awaiting surgery. Our aim is to compare contemporary post-operative complication risk among patients with pre-operative endoscopic retrograde cholangiopancreatography (ERCP) stenting compared to those without. Patients who underwent a pancreatoduodenectomy for pancreatic cancer with biliary obstruction within the ACS-NSQIP registry from 2014 to 2017 were identified. The primary outcome was to compare the risk of 30-day complication (composite outcome) between patients with and without pre-operative ERCP stenting. Propensity score matching was used to ensure balanced baseline characteristics and log-binomial regression models were used to estimate risk ratios for overall perioperative complication between groups. From 6073 patients with obstructive jaundice undergoing pancreatoduodenectomy for pancreatic cancer, 92% (5564) were eligible for the study. After performing a propensity score matching on 20 baseline characteristics, 952 patients without stenting were matched to up to four patients who received pre-operative ERCP stenting (n = 3467) for a matched cohort of 4419. A total of 1901 (55%) patients with pre-operative ERCP stenting experienced a post-operative complication compared to 501 (53%) patients without stenting (risk ratio 1.04, 95% CI 0.97-1.11, p = 0.23). Pre-operative ERCP stenting was not associated with an increased risk of post-operative complication in patients undergoing pancreatoduodenectomy with obstructive jaundice. Biliary stenting may be safely considered for symptom relief and to potentially facilitate pre-operative chemotherapy for pancreatic cancer.

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