Table 1.

Characteristics of patients who underwent endoscopic retrograde cholangiopancreatography (ERCP).

Patients, n	91
Age, years, mean (SD)	72.66 (10.132)
Sex, male, n (%)	69 (75.8)
Objective diseases (malignant/benign)	76:15
Reconstructive procedure, n (%)
Roux-en-Y total gastrectomy	32 (35.2)
Roux-en-Y partial gastrectomy	26 (28.6)
Billroth II gastrectomy	8 (8.8)
Pancreaticoduodenectomy	18 (19.8)
Others	7 (7.7)
Diagnosis, n (%)
Bile duct stone	58 (63.7)
Bile duct stricture	24 (26.4)
Stricture of choledo- or hepaticojejunal anastomosis	3 (3.3)
Others	6 (6.6)
Talking antithrombotic agent, n (%)	18 (19.8)
Antiplatelet, n (%)	10 (11.0)
Anticoagulant, n (%)	10 (11.0)
Emergency procedure, n (%)	41 (45.1)
Endoscope type, single, n (%)	45 (49.5)
Skill, expert, n (%)	47 (51.6)
Kinds of procedure
EBD (plastic stent), n (%)	49 (53.8)
EBD (metal stent), n (%)	3 (3.3)
ENBD, n (%)	2 (2.2)
Stone extraction, n (%)	14 (15.4)
Others, n (%)	23 (25.3)

Abbreviations: EBD: endoscopic bile drainage, ENBD: endoscopic nasal bile drainage.