Patients requiring  multiple factor replacement doses
Bleeding in head, neck, pharynx, retropharynx, or retroperitoneum
Potential for compartment syndrome
If close follow-up and mild hemarthrosis
If no bleeding and prophylaxis given
Coordinate follow-up with patient's hematologist or primary care provider
Hemophilia
Too few
Von Willebrand disease
Thrombocytopenia
Factor V Leiden
Nonfunctional
Hereditary hemorrhagic telangiectasia
Aspirin