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Background Several studies have aimed to use different biochemical and haematological markers to predict relevant post-operatively pancreatic fistulas after hepatobiliary operations, however none has been defined as the gold-standard. This study aimed to evaluate the sensitivity and specificity of day 3 C-reactive protein (CRP) and drain amylase values in predicting re-intervention in patients who have undergone pancreatico-duodenectomy (PPPD) or Whipple’s procedure. Methods Retrospective collection of data from a prospective database of patients who underwent PPPD or Whipple’s procedure between January 2017 and February 2021. Serum CRP was collected from day one to day five post-operatively, and day three or the closest available result of post-surgery drain amylase values were considered. Cutoff values were determined as follows: day three CRP optimal level was determined by the median (175 mg/L), and drain amylase was determined by three times the upper limit of normal serum amylase level (330 U/L). Post-operative pancreatic fistulas (POPF) were classified as per the 2016 International Study Group for Pancreatic Surgery (ISGPS). Re-intervention was defined as any deviation from the normal post-surgical care – including interventional radiology procedures, embolisation, re-look laparotomies and re-admission to Intensive Care. Results A total of 217 patients were included in this study – 182 underwent pylorus preserving pancreaticoduodenectomy as opposed to those who had Whipple procedure. 55 (25%) patients required re-intervention post-operatively. A day three CRP above 175 showed a sensitivity of 78% and specificity of 66% in predicting re-intervention in these patients. The combination of this and elevated drain amylase proved to be more sensitive (85%) and specific (87%) than the CRP alone. Conclusions Day 3 CRP and drain amylase are accurate predictors of post-PPPD and Whipple’s re-interventions. We aim to include this as part of the local Enhanced Recovery Pathway to help identify patients that will potentially develop complications requiring further surgical management.

P-P45 Prognostic Value of CRP in Post-PPPD and Whipple’s Re-Intervention