The pancreatic juice length in the stent tube as the predicting factor of clinical relevant postoperative pancreatic fistula after pancreaticoduodenectomy

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Abstract

Several risk factors for pancreatic fistula had been widely reported, but there was no research focusing on the exocrine output of remnant gland.

During the study period of January 2015 to September 2016, 82 patients accepted pancreaticoduodenectomy (PD, end-to-end dunking pancreaticojejunostomy with internal stent tube). All the data were collected, including preoperative medical status, operative course, final pathology, gland texture, pancreatic duct diameter, size of the stent, length of pancreatic juice in the stent tube, width of the pancreatic stump, diameter of the jejunum and the status of postoperative pancreatic fistula (POPF). POPF was defined according to International Study Group of Pancreatic Fistula criteria.

The diameter of pancreatic duct in the POPF group was significantly smaller than that in the group without POPF (1.99 vs 2.90 mm, P = .000). The length of pancreatic juice in the stent tube in the POPF group was significantly longer than that in the group without POPF (18.04 vs 6.92 cm, P = .014). There were more pancreatic ductal adenocarcinoma cases and hard glands in the group without POPF. The length of pancreatic juice in the clinically relevant postoperative pancreatic fistula (CR-POPF) group was significantly longer than that in the grade A group (32.4 vs 9.21 cm, P = .000). Multivariate analysis identified gland texture and length of pancreatic juice as independent predictors for pancreatic fistula. Multivariate analysis also identified the length of pancreatic juice as an independent predictor for CR-POPF.

The length of pancreatic juice in the stent tube might be a useful predictive factor of POPF after PD, especially for CR-POPF.

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