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

Table 1 Patient characteristics and baseline cardiovascular parameters in each group (mean ± SD)

Groups	o-ERCP	n-ERCP	P-value
Number of patients	25	25
Male/Female	17/8	17/8	0.76
Median age (range)	69 (32-89)	74 (35-85)	0.07
Systolic blood pressure (mmHg)	129 ± 20	133 ± 19	0.50
Pulse rate (/min)	71 ± 12	65 ± 11	0.08
SpO2 (%)	99 ± 1.6	98 ± 1.6	0.35
Indication for ERCP (n)
Cholecyst lithiasis	6	2
Choledochus lithiasis	11	10
Cancer	6	10	0.50
Pancreatitis	1	2
Others	1	1

O-ERCP: Oral ERCP; n-ERCP: Nasal ERCP.

Table 2 Esophagogastroduodenoscopy prior to ERCP and its diagnosis

Groups	o-ERCP	n-ERCP
Number of patients	25	25
EGD prior to ERCP	25	0
Diagnosis
Normal finding	8	10
Pathological findings	17	15
Reflux esophagitis	1	2
Sliding hernia	4	2
Esophageal diverticulum	1	0
Atrophic gastritis	10	11
Duodenal ulcer scar	1	4
Gastric adenoma	1	1
Gastric SMT	0	1

EGD: Esophagogastroduodenoscopy; SMT; Submucosal tumor.

Table 3 Successful rates of cannulation and endoscopic naso-biliary drainage and rates of post-ERCP hyperamylasemia in each group

Groups	o-ERCP	n-ERCP	P-value
Successful cannulation (%)
Either of the ducts	25/25	23/25	0.510
	(100)	(92)
Common bile duct	24/25	18/25	0.053
	(96)	(72)
Pancreatic duct	24/25	21/23	0.940
	(96)	(91)
Median time for cannulation, min (%)	8	7	0.590
	(2-24)	(4-20)
Post-procedural hyperamylasemia (%)	7/25	5/23	0.870
	(28)	(22)
Successful ENBD (%)	20/21	13/15	0.340
	(95)	(87)

O-ERCP: Oral ERCP; n-ERCP: Nasal ERCP; ENBD: Endoscopic naso-biliary drainage.

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)