Hematology and Oncology Book


Orbit Bleeding Risk Score

Aka: Orbit Bleeding Risk Score
  1. See Also
    1. HAS-BLED Score
    2. Outpatient Bleeding Risk Index
    3. Atrial Fibrillation Anticoagulation
    4. CHADS2-VASc Score
  2. Indications
    1. Assess Adults with Atrial Fibrillation for risk of bleeding while on Anticoagulation
  3. Criteria
    1. Score 1: Age >74 years old
    2. Score 1: Glomerular Filtration Rate (GFR) <60 ml/min/1.73m2
    3. Score 1: Antiplatelet use
    4. Score 2: Major bleeding history (e.g. Gastrointestinal Bleeding or Intracranial Bleeding)
    5. Score 2: Low Hemoglobin
      1. Female <12 g/dl or Hematocrit <36%
      2. Male <13 g/dl or Hematocrit <40%
  4. Interpretation
    1. Total Score 0 to 2: Low Risk (2.4 bleeding events per 100 patient years)
    2. Total Score 3: Moderate Risk (4.7 bleeding events per 100 patient years)
    3. Total Score >=4: High Risk (8.1 bleeding events per 100 patient years)
  5. Resources
    1. Orbit Bleeding Risk Score in Atrial Fibrillation (MDCalc)
      1. https://www.mdcalc.com/orbit-bleeding-risk-score-atrial-fibrillation
  6. References
    1. O'Brien (2015) Eur Heart J 36(46):3258-64 +PMID:26424865 [PubMed]

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