Ulcer size increases rebleeding risk 27/04/2016 by Bob Dunn The Upper GI haemorrhage page has been updated and the size of the ulcer added as a risk factor for rebleeding. Camus, M, Jensen, DM, Kovacs, TO, et al. Independent risk factors of 30-day outcomes in 1264 patients with peptic ulcer bleeding in the USA: large ulcers do worse. Alimentary Pharmacology & Therapeutics 2016:n/a-n/a. .