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The World Health Organization, or WHO, made a standardized grading scale to measure the severity of bleeding.
| Grade 0 |
no bleeding |
| Grade 1 |
petechial bleeding; |
| Grade 2 |
mild blood loss (clinically significant); |
| Grade 3 |
gross blood loss, requires transfusion (severe); |
| Grade 4 |
debilitating blood loss, retinal or cerebral associated with fatality |
[edit] References
- Webert KE, Cook RJ, Sigouin CS, et al. The risk of bleeding in thrombocytopenic patients with acute myeloid leukemia. haematologica 2006;91:1530-1537
