After complete repair of a congenital heart defect, amoxicillin is recommended for 6 months to prevent which condition?

After complete repair of a congenital heart defect, amoxicillin is recommended for 6 months to prevent which condition?

• A. To prevent dental caries
• B. To prevent infective endocarditis
• C. To treat arrhythmias
• D. To manage fluid overload

Answer: (B)

Endocarditis prophylaxis after repair of a congenital heart defect is aimed at preventing infective endocarditis from bacteria that can enter the bloodstream and seed the heart or prosthetic material during the healing period. Amoxicillin is used because it provides good oral bioavailability and effectively covers the common oral bacteria that cause endocarditis. The 6-month window reflects the time when the repair is still healing and the risk of bacteremia leading to endocarditis is higher. It would not prevent dental caries, treat arrhythmias, or manage fluid overload, which are addressed by other measures.

Endocarditis prophylaxis after repair of a congenital heart defect is aimed at preventing infective endocarditis from bacteria that can enter the bloodstream and seed the heart or prosthetic material during the healing period. Amoxicillin is used because it provides good oral bioavailability and effectively covers the common oral bacteria that cause endocarditis. The 6-month window reflects the time when the repair is still healing and the risk of bacteremia leading to endocarditis is higher. It would not prevent dental caries, treat arrhythmias, or manage fluid overload, which are addressed by other measures.