Pre-operative stenting is associated with a higher prevalence of post-operative complications following pancreatoduodenectomy

Abstract Objectives Whilst there are theoretical benefits from pre-operatively draining the biliary tree prior to pancreatoduodenectomy (PD), the current literature does not support this intervention. The aim of this study was to explore the relationship between pre-operative stenting, bactibilia and outcome in a large United Kingdom tertiary referral practice. Methods Patients undergoing PD were identified from a prospectively maintained database. The presence or absence of a stent prior to PD, and the results of bile cultures taken at PD were related to the subsequent post-operative course and the development of complications. Results 280 patients underwent PD for periampullary malignancies, all of whom presented with jaundice. 118 patients were stented prior to referral (98 ERCP, 20 PTC). Bile cultures were positive more frequently in the stent group (83% vs . 55%; p  = 0.000002) and bactibilia was more common after ERCP than PTC (83% vs . 56%; p  = 0.006). The overall prevalence of complications was 54% in the stented and 41% in the non-stented group ( p  = 0.03) with statistical significance achieved for pancreatic leak ( p  = 0.013) and haemorrhagic complications ( p  = 0.03). Comparing stent with no stent, there as no difference in the 30-day mortalities (8.5% vs. 6.8%; p  = 0.6) or the 1-year mortality rates (35% vs. 28%; p  = 0.21). Mortality rates in the infection versus no infection groups were comparable at 30 days (8.5% vs. 5.5%; p  = 0.21), and at 1 year (30.7% vs. 26.4%; p  = 0.25). Conclusions Pre-operative stent insertion prior to PD is associated with increased morbidity but not mortality and this is greatest for stents placed at ERCP.