7th August 2023

A 72-year-old man presents with a 3-week history of malaise and fevers. He had dental surgery a month prior to the onset of symptoms.

A 72-year-old man presents with a 3-week history of malaise and fevers. He had dental surgery a month prior to the onset of symptoms. He is found to have a new murmur and is treated for suspected endocarditis with amoxicillin and gentamicin. He has an echocardiogram which shows vegetation on the aortic valve. Blood cultures from admission grow fully sensitive Streptococcus mitis.

What are the next steps with his antibiotic regimen?

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