Primary Needle-Knife Sphincterotomy for Biliary Access in Patients at High Risk of Post-Endoscopic Retrograde Cholangiopancreatography Pancreatitis

Table 2

Clinical outcomes of primary NKS.

Variable	Total ()
Technical success rate, (%)	32 (94.1)
The success rate of procedure after cannulation,(%)
Stone removal	28 (100)
Biliary drainage	4 (100)
NKS procedure time (min), median (range)	4.1 (0.5-25.2)
Total procedure time (min), median (range)	11.3 (3.8–40.4)

ERCP: endoscopic retrograde cholangiopancreatography; NKS: needle-knife sphincterotomy.