ORBIT

Question 1

What is the ORBIT scoring tool?

Answer 1

Assesses the risk of bleeding when a patient commences, or is under review, regarding anticoagulation therapy in atrial fibrillation

Question 2

What are the different components of ORBIT?

Answer 2

1. Older (75 years or older)
   1 point
2. Reduced haemoglobin (<13 mg/dL in men and <12 mg/dL in women), haematocrit (<40% in men and <36% in women) or history of anaemia
   2 points
3. Bleeding history
   2 points
4. Insufficient kidney function (eGFR < 60 mg/dL/1.73 m2)
   1 point
5. Treatment with an antiplatelet agent
   1 point

Question 3

What does each scoring outcome represent in ORBIT?

Answer 3

ORBIT Score - Risk Group - Bleeds per 100 patient-years
0-2 Low 2.4

3 Medium 4.7

4-7 High 8.1