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Flashcards in Haematology Deck (8)
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1

What is the rate of HITS with heparin?

2-4%

2

What is the rate of HITS with enoxaparin?

0.6%

3

What is the diagnostic criteria for HITS?

Diagnosed through combination of clinical and laboratory factors

4T score
4-5 intermediate probability
6-8 high probability

4

What is the 4T score for HITS?

Thrombocytopenia (fall and and nadir)
Timing (5-10 days after exposure most likely)
Thrombosis (confirmed, suspected, none)
Thrombocytopenia - other causes (none/possible/definite)

5

Treatment of HITS?

Cease heparin anticoagulant
Start non heparin anticoagulant
Continue for 4 weeks if no thrombosis, or three months if has had thrombosis

6

What is the best test to assess for residual dabigatran activity?

Thrombin time

7

What is the best test to assess for residual rivaroxaban/apixaban activity?

Anti Xa level
PT/INR

8

What is the risk of thrombosis with APLS with SLE?

4% per year