17th March 2024

A 58 year old with COPD presents with shortness of breath and fever

A 58 year old with COPD presents with shortness of breath and fever. Chest XR reveals a right lower consolidation. She was prescribed IV fluids and antibiotics. Three days later, her INR increased from 2.6 to 4.1 despite taking her regular dosages. Which of the following drugs is the likely culprit of her raised INR?

Select the SINGLE most appropriate option from the list below. Select ONE option only.