Successful Use of High-dose Daptomycin in a Child With Staphylococcus aureus Endocarditis

Area of Science:

• Pediatric Infectious Diseases
• Antimicrobial Therapy
• Cardiology

Background:

• Methicillin-resistant Staphylococcus aureus (MRSA) endocarditis is a severe infection.
• Treatment failure with standard therapies like vancomycin can occur.
• Pediatric cases require careful management due to potential complications.

Observation:

• A child presented with MRSA endocarditis, persistent bacteremia, and clinical decline.
• Initial treatment with vancomycin and rifampicin was ineffective.
• The patient developed acute kidney injury during the course of treatment.

Findings:

• Successful treatment of MRSA endocarditis was achieved using daptomycin.
• Daptomycin demonstrated efficacy in a pediatric patient with refractory infection.
• Daptomycin dosage required adjustment due to the patient's acute kidney injury.

Implications:

• Daptomycin is a viable therapeutic option for pediatric MRSA endocarditis, even in refractory cases.
• Close monitoring for renal function is crucial when administering daptomycin to children.
• This case highlights the importance of alternative antibiotic strategies for severe staphylococcal infections.