A 3-year-old child with a complex cardiac defect is admitted with infective endocarditis. Management (in what order) would..

A. The correct management involves obtaining blood cultures to identify the causative organism, starting high-dose antibiotics for treatment, and assessing for cardiac decompensation as the condition progresses. B. While CBC and CXR may be ordered, starting aspirin is not a first-line treatment for infective endocarditis. C. Cyanosis and high-dose steroids are not immediate interventions for infective endocarditis. D. The first priority is antibiotics and blood cultures, not starting oxygen right away unless the child is hypoxic.