Table 8 Complications observed during prospective follow‐up.

Complication	Outcome based on all recorded procedures n/N (%)	Outcome based on patients' first recorded procedure n/N (%)
Post‐ERCP pancreatitis	79/5264 (1.5)	74/4561 (1.6)
Gastrointestinal haemorrhage
All ERCPs BS procedures	46/5264 (0.9)33/2260 (1.5)	40/4561 (0.9)28/2110 (1.3)
Cholangitis	59/5264 (1.1)	48/4561 (1.0)
Duodenal perforation	22/5264 (0.4)	20/4561 (0.4)
Miscellaneous	74/5264 (1.4)*	54/4561 (1.2)
Any†	268/5264 (5.1)	230/4561 (5.0)

BS, biliary sphincterotomy; ERCP, endoscopic retrograde cholangio‐pancreatography.

*Includes 5 cases of basket impaction/mechanical failure of lithotriptor; 1 oesophageal perforation; 2 ductal perforations with 1 case of subcapsular biloma; 13 cases of acute cholecystitis (including 1 case of gallbladder empyema); 1 case of gallstone ileus; 1 episode of haemorrhage arising from a combined percutaneous procedure; 1 Addisonian crisis; 3 complications of antibiotic administration (allergic rash in 1, Clostridium difficile diarrhoea in 1, anaphylaxis in 1); 5 cases of gastrointestinal disturbance (nausea and vomiting/constipation); 24 episodes of abdominal pain which did not meet the diagnostic criteria for pancreatitis; 1 episode of epistaxis temporally related to the procedure; 13 cardiorespiratory complications; 1 neuropsychiatric reaction to medication; 1 case of possible rigors without documented fever; 2 cases of acute renal failure.

†Procedures could result in more than one complication.