Table 2.

Procedure complexity matrix

Procedure risk level	Low risk	Medium risk	High risk
Procedure	OGD Flexible sigmoidoscopy Polyp <1 cm	OGD Flexible sigmoidoscopy Polypectomy >1 cm <2 cm or multiple polypectomy Colonoscopy Polypectomy >1 cm <2 cm EUS FNA Argon plasma coagulation Enteroscopy PEG	GI bleed Dilatation Therapeutic OGD Variceal banding EMR ESD ERCP/Spyglass© GA PEXACT© Polypectomy >2 cm or multiple polypectomy

EMR, endoscopic mucosal resection; ERCP, endoscopic retrograde cholangiopancreatography; ESD, endoscopic submucosal dissection; FNA, fine needle aspiration; GA, general anaesthetic; GI, gastrointestinal; OGD, oesophagogastroduodenoscopy; PEG, percutaneous endoscopic gastrostomy.