Table 1. Risk stratification of endoscopic procedures based on the risks of haemorrhage and of intervention required to treat a complication.

High risk procedures	Low risk procedures
Endoscopic polypectomy *	Diagnostic procedures ± biopsy sampling
ERCP with sphincterotomy	Biliary or pancreatic stenting
Ampullectomy	Device-assisted enteroscopy without polypectomy
Endoscopic mucosal resection or endoscopic submucosal dissection	Oesophageal, enteral or colonic stenting
Endoscopic dilatation of strictures in the upper or lower gastrointestinal tract	Endoscopic ultrasound without sampling or interventional therapy
Endoscopic therapy of varices
Percutaneous endoscopic gastrostomy
Endoscopic ultrasound-guided sampling or with interventional therapy
Oesophageal or gastric radiofrequency ablation

ERCP, endoscopic retrograde cholngiopancreatography

^*consider cold snare resection of polyps < 1 cm on continued clopidogrel monotherapy