12th March 2024

A 79-year-old male with a prosthetic mitral valve replacement is referred to you with fevers and fatigue over the last few weeks.

A 79-year-old male with a prosthetic mitral valve replacement is referred to you with fevers and fatigue over the last few weeks. The junior doctor in the emergency department alerts you to the finding of splinter haemorrhages in the patient and a new pansystolic murmur loudest in the mitral region radiating to the axilla. Blood cultures have already been taken. Which of the following investigations would most likely confirm the underlying diagnosis?

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