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Medical Emergencies · single question

A patient with successfully repaired Tetralogy of Fallot (no residual defects) needs dental treatment. What prophylaxis is required?

  1. Azithromycin 500mg one hour before
  2. Clindamycin 600mg one hour before
  3. No antibiotic prophylaxis required
  4. Amoxicillin 2g one hour before
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Correct answer: C. No antibiotic prophylaxis required

Per AHA/ADA guidelines: fully repaired congenital heart defects with NO residual shunts or valvular regurgitation do NOT require prophylaxis after 6 months of complete repair. Prophylaxis IS required if residual defects persist or prosthetic material was used within 6 months.

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