24th June 2026

A 25-year-old male with a history of IVDU presents to the emergency department generally unwell with a fever, a new diastolic murmur, and shortness of breath.

A 25-year-old male with a history of IVDU presents to the emergency department generally unwell with a fever, a new diastolic murmur, and shortness of breath. His observations are as follows: BP 122/78, HR 98, RR 17, SpO2 96% on room air, temperature 38.4C. You suspect a diagnosis of infective endocarditis. He has a blood test, including one set of blood cultures, and IV access is already established. What is the next best step in his ongoing investigation and management?

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