Diagnosis and therapy of non-variceal upper gastrointestinal bleeding

Table 4 Forrest classification[12] and the risk of re-bleeding within 24 h after exclusively medical therapy

	Re-bleeding risk (%)
Acute bleeding
Forrest I a (spurting bleeding)	90
Forrest I b (oozing bleeding)	50
Signs of recent bleeding
Forrest II a (visible vessel)	25-30
Forrest II b (adherent clot)	10-20
Forrest II c (flat pigmented haematin on ulcer base)	7-10
Lesions without active bleeding
Forrest III (lesions without signs of recent bleeding or fibrin-covered clean ulcer base)	3-5