Table 2. Post-procedure complications for endoscopic retrograde cholangiopancreatographies (ERCPs) requiring advanced techniques.

	DWG alone	TPS alone	NKS alone	DWG + TPS	Complication rate for advanced techniques (%)
Post-ERCP pancreatitis	3	1	2	1	7/230 (3 %)1 , 2
Micro-perforation	0	0	1	0	1/230 (0.4 %)2
Bleeding	0	0	0	0	0

DWG, double wire-guided; NKS, needle-knife sphincterotomy; TPS, transpancreatic papillary septotomy.

¹All pancreatitis cases mild.

²Treated conservatively.