Antibiotic Prophylaxis for Dental Procedures in Patients with Prosthetic Heart Valves

Indications and Recommendations

• The American Heart Association and European Society of Cardiology recommend antibiotic prophylaxis for patients with prosthetic heart valves undergoing dental procedures, as they are at highest risk for adverse outcomes from infective endocarditis 1, 2, 3, 4
• Patients with rheumatic heart disease and prosthetic valve replacement are considered high-risk for developing infective endocarditis, and should receive antibiotic prophylaxis before dental procedures 5, 6
• Dental extractions involve manipulation of the gingival or periapical region of teeth and perforation of the oral mucosa, which are considered high-risk procedures requiring prophylaxis 1, 2

Antibiotic Regimens

• The American Heart Association recommends amoxicillin or ampicillin 2g orally or intravenously as a single dose 30-60 minutes before the procedure for patients without penicillin allergy 1, 2
• For patients with penicillin allergy, clindamycin 600mg orally or intravenously as a single dose, or azithromycin or clarithromycin 500mg orally as a single dose, are recommended 1, 2, 3

Rationale and Important Considerations

• Ampicillin is recommended due to its excellent coverage against oral streptococci, the main pathogens of concern during dental procedures 1, 2
• Bactericidal antibiotics, such as ampicillin, are preferred over bacteriostatic agents for prevention of infective endocarditis 7
• Prophylaxis should be administered as a single dose 30-60 minutes before the procedure, and good oral hygiene and regular dental care remain important for reducing the risk of infective endocarditis in high-risk patients 3, 4, 5, 8