A 60-year-old woman with AF takes warfarin and has an INR target of 2.5. She starts co-amoxiclav for cellulitis and reports reduced appetite. Her INR

Question

A 60-year-old woman with AF takes warfarin and has an INR target of 2.5. She starts co-amoxiclav for cellulitis and reports reduced appetite. Her INR today is 3.7 with no major bleeding. What monitoring is required?

Accepted Answer

Arrange prompt INR follow-up through the anticoagulation service

Answer

Check serum urate after the first dose

Answer

Check thyroid function within 48 hours

Answer

Check HbA1c after finishing the antibiotic

Answer

Check peak flow twice daily during treatment

Warfarin INR during infection — GPhC CRA MCQ

A 60-year-old woman with AF takes warfarin and has an INR target of 2.5. She starts co-amoxiclav for cellulitis and reports reduced appetite. Her INR today is 3.7 with no major bleeding. What monitoring is required?