Treatment of bacterial endocarditis with vancomycin

Area of Science:

• Infectious Diseases
• Pharmacology
• Cardiology

Background:

• Bacterial endocarditis poses significant treatment challenges, particularly in patients with allergies to standard therapies like penicillin.
• Identifying effective and safe alternative antibiotics is crucial for managing this serious infection.

Observation:

• This study evaluated vancomycin treatment in five patients with bacterial endocarditis who had penicillin allergies.
• The causative bacteria included Streptococcus species and Staphylococcus aureus.

Findings:

• Vancomycin achieved successful treatment outcomes in all five patients.
• It exhibited bactericidal activity against most tested organisms at achievable serum concentrations.
• Streptococcus faecalis required combination therapy with streptomycin to ensure bactericidal levels.

Implications:

• Vancomycin is a viable and effective alternative to penicillin for bacterial endocarditis caused by susceptible microorganisms.
• Combination therapy with vancomycin and an aminoglycoside may be beneficial for enterococcal endocarditis.
• Vancomycin demonstrated a favorable safety profile, with only mild phlebitis observed.