“…However, patients without a visible vessel in the ulcer crater have a much lower risk of further haemorrhage: oozing without other signs (10%), gray slough flat spots (7%) or a clean ulcer base (3%) [20]. Other factors which are prognostic for early recurrent haemorrhage include: patient age over 65 years, an admission haemoglobin !8 g/dl, clinical shock, haematemesis, recurrent bleeding, severe comorbidity or coagulopathies, an inhospital bleed, the need for transfusions of 15 red blood cell units (RBCU) in the first 24 h after admission or the need for emergency surgery [6,23,24]. Prognostic factors indicative of the failure of endoscopic treatment to control bleeding include: ulcer diameter 12 cm and shock on admission [25,26].…”