Transnasal endoscopic retrograde chalangiopancreatography using an ultrathin endoscope: A prospective comparison with a routine oral procedure

Table 4 Rates and times required for successful cannulation in each pattern of the endoscopic shape

Patterns	C	U	J	Total
Successful cannulation (%)
Either of the ducts	6	14	3	23
Common bile duct	6/6	9/14	3/3	18/23
	(100)	(64)	(100)	(78)
Pancreatic duct	5/5	14/14	2/2	21/21
	(100)	(100)	(100)	(100)
Median time for cannulation, min (%)
Either of the ducts	6.5	7.3	7	7
	(5-8)	(4-20)	(4-14)	(4-20)
Common bile duct	10.5	20	16	17
	(8-37)	(7-35.5)	(6-19)	(6-37)
Pancreatic duct	6	13	6	9
	(5-8)	(6-26)	(5-7)	(5-26)
Termination	31	34	24	33
	(14-38)	(11-61)	(12-34)	(11-61)