Table 1: Forrest Classification System with Respective Prognosis
Forrest Classification Rebleeding Incidence Surgical Requirement Incidence of Death
Type I: Active Bleed
Ia: Spurting Bleed
Ib: Oozing Bleed
55-100% 35% 11%
Type II: Recent Bleed
Ila: Non-Bleeding Visible Vessel (NBVV)
Ilb: Adherent Clot
40-50% 34% 11%
20-30% 10% 7%
Type III: Lesion without Bleeding
Flat Spot
Clean Base
10% 6% 3%
5% 0.5% 2%

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