Warfarin Flashcards
1
Q
Alcohol
interaction with warfarin
A
Decreases effect
CYP450 inducer
2
Q
Carbamazepine
interaction with warfarin
A
Decreases effect
CYP450 inducer
3
Q
Phenytoin
interaction with warfarin
A
Decreases effect
CYP450 inducer
4
Q
Cranberry juice
interaction with warfarin
A
Increases effect
enzyme inhibitor
5
Q
St John’s wort
interaction with warfarin
A
Decreases effect
CYP450 inducer
6
Q
Clarithromycin/ Erythromycin
interaction with warfarin
A
Increases effect
enzyme inhibitor
7
Q
Signs of poor anticoagulation control
A
- 2 INR >5 in past 6 months
- 1 INR >8 in past 6 months
- 2 INR <1.6 in past 6 months
- Total therapeutic range <65%
8
Q
Target INR for A fib/ MI
A
2.5
9
Q
Target INR for prosthetic heart valves
A
3.5
