Pancreatic stent improves the success rate of needle-knife papillotomy in patients with difficult biliary cannulation

Table 2 Technique factors and adverse events of the Pancreatic stent- needle-knife papillotomy and Freehand- needle-knife papillotomy groups, n (%)

	Total (n = 190)	PS-NKP group (n = 82)	FH-NKP group (n = 108)	P value
Endoscopists
A	39 (20.5)	13 (15.9)	26 (24.1)	0.165
B	54 (28.4)	25 (30.5)	29 (26.9)	0.582
C	55 (28.9)	26 (31.7)	29 (26.9)	0.465
D	22 (11.6)	9 (11.0)	13 (12.0)	0.821
E	10 (5.3)	6 (7.3)	4 (3.7)	0.269
F	10 (5.3)	3 (3.7)	7 (6.5)	0.388
Significant bleeding during NKP	11 (5.8)	2 (2.4)	9 (8.3)	0.085
Successful NKP	167 (87.9)	77 (93.9)	90 (83.3)	0.027
Adverse events
Overall	18 (9.5)	6 (7.3)	12 (11.1)	0.493
Perforation	2 (1.1)	1 (1.2)	1 (0.9)	0.844
Pancreatitis	5 (2.6)	2 (2.4)	3 (2.8)	0.885
Delayed bleeding	5 (2.6)	1 (1.2)	4 (3.7)	0.289
Cholangitis	6 (3.2)	2 (2.4)	4 (3.7)	0.621

PS: Pancreatic stent; NKP: Needle-knife papillotomy; FH: Freehand.