INR Flashcards
1
Q
What conditions may warrant anticoagulation?
A
AF Rheumatic heart disease Previous DVT/VTE Antiphospholipid syndrome Prosthetic heart valve Recurrent TIA
Do not anticoagulate people who have had stroke but are in sinus rhythm (unless there are other clues suggesting this is a venous thromboembolism or there is paroxysmal AF etc)
2
Q
What is the usual reference range for INR?
A
2 to 3
3
Q
How is warfarin dose decided?
A
Use INRstar programme - calculates weekly dose - divide between 7
Can be very varied - takes different amount in each patient to achieve target INR
Usually 5-10mg daily
4
Q
What severe side effect must patients be warned about?
A
Calciphylaxis
5
Q
What does the HASBLED tool asses?
A
Bleeding risk
6
Q
What score assesses the risk of a thromboembolic event?
A
CHADSVASc
