Final answer:
The American Heart Association recommends benzathine benzylpenicillin for prophylaxis of rheumatic fever. The duration of treatment varies depending on the patient's risk for reinfection.
Step-by-step explanation:
For prophylaxis of rheumatic fever, the American Heart Association recommends a treatment regimen of benzathine benzylpenicillin every 3 or 4 weeks, depending on the patient's risk for reinfection. This antibiotic treatment helps prevent the recurrence of rheumatic fever. The duration of prophylactic treatment may vary depending on the patient's age and risk factors for reinfection.