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Forrest classification
| Class | Risk of rebleeding | |
|---|---|---|
| Clean base |
III |
low |
| Hematin covered flat spot |
IIc |
low |
| Adherent clot |
IIb |
high |
| Visible vessel |
IIa |
high |
| Oozing hemorrhage |
Ib |
high |
| Spurting hemorrhage | Ia | high |
From Laine L, New Engl J Med 1994.
