5. Infections (drugs 2)

Question 1

Rifampicin: screening

Answer 1

3. Decreases the anticoag effect of warfarin, so more likely to need an increase in warfarin dose.

Question 2

Rifampicin: spectrum

Answer 2

?

Question 3

Ciprofloxacin: screening

Answer 3

3. Ciprofloxacin enhances the effects of warfarin and so would need a lower dose of warfarin.

Question 4

Flucloxacillin: screening

Answer 4

3. Warfarin (direction of INR unknown)

Question 5

Metronidazole: screening

Answer 5

3. Warfarin (direction of INR unknown)

Question 6

Ethambutol: counselling

Answer 6

4. Visual side effects can occur. Alternative drug should be considered. Stop taking. Early discontinuation is almost always followed by recovery eyesight.

Question 7

Nitrofurantoin: screening

Answer 7

1. If trimethoprim used for UTI, if no improvement after at least 48 hours, nitrofurantoin can be tried.

Question 8

Metronidazole: screening

Answer 8

1. First line for first case C.diff infection