Drain amylase value as an early predictor of pancreatic fistula after cephalic duodenopancreatectomy

Table 5 Prognostic characteristics of threshold (cut-off) drain fluid amylase levels by postoperative days in the occurrence of biochemical pancreatic fistula and clinically relevant pancreatic fistulas in relation to the texture of the pancreas

Grade PF	Postoperative days	Cut off	Sensitivity	Specificity	FN	FP
		U/L
A Pancreatic texture-soft, duct diameter ≤ 3 mm
	1	> 1200	93.1%	87.5%	6.9%	12.5%
	2	> 800	89.7%	94.3%	10.3%	5.7%
	3	> 350	98.7%	97.8%	1.3%	2.2%
B/C Pancreatic texture-soft duct, diameter ≤ 3 mm
	1	> 1200	92.3%	87.5%	7.7%	12.5%
	2	> 1200	89.7%	97.7%	10.3%	2.3%
	3	> 800	90.2%	98.9%	9.8%	1.1%

PF: Pancreatic fistula; FN: False negative; FP: False positive.