Antibiotic Prophylaxis Regimen for Rheumatic Fever

Primary Prophylactic Options

The American College of Cardiology recommends intramuscular benzathine penicillin G (1.2 million units every 4 weeks) as the first-line antibiotic prophylaxis regimen for patients who develop rheumatic fever, with the strongest evidence for preventing recurrences 1, 2
For patients allergic to penicillin, the American Heart Association suggests oral penicillin V: 250 mg twice daily, or Sulfadiazine: 1 g orally once daily (for adults); 0.5 g once daily for patients weighing ≤27 kg 1, 3, 4

The American College of Cardiology recommends continuing prophylaxis for 10 years after the last attack OR until age 40, whichever is longer, for patients with rheumatic fever with carditis and residual heart disease (persistent valvular disease) 1, 5
For patients with rheumatic fever with carditis but no residual heart disease, prophylaxis should continue for 10 years after the last attack OR until age 21, whichever is longer 1, 5
For patients with rheumatic fever without carditis, prophylaxis should continue for 5 years after the last attack OR until age 21, whichever is longer 1, 5

Intramuscular benzathine penicillin G has the strongest evidence (Class I, LOE A) for effectiveness in preventing recurrences, according to the American Heart Association 2, 6

A full therapeutic course of penicillin should first be given to patients with acute rheumatic fever to eradicate residual Group A Streptococcus, even if throat culture is negative, as recommended by the American Heart Association 6
For patients receiving penicillin prophylaxis who require endocarditis prophylaxis for dental procedures, an agent other than penicillin should be used, as oral α-hemolytic streptococci are likely to have developed resistance to penicillin, according to the American Heart Association 3, 4

Current American Heart Association guidelines no longer recommend routine endocarditis prophylaxis for patients with rheumatic heart disease unless they have prosthetic valves or prosthetic material used in valve repair 3, 4
Maintaining optimal oral health remains an important component of overall healthcare for these patients, as recommended by the American Heart Association 7

The European Society of Cardiology recommends that secondary antibiotic prophylaxis with penicillin should continue after valve surgery in adults with rheumatic heart disease, following the same duration guidelines as for non-surgical RHD patients: minimum 10 years after the last acute rheumatic fever episode OR until age 40 (whichever is longer) for those with severe RHD or persistent valvular disease 8, 9
The European Society of Cardiology explicitly states that RHD antibiotic prophylaxis should continue after valve surgery, representing a critical departure from the assumption that valve replacement eliminates the need for secondary prophylaxis 8, 9

For adults post-valve surgery with severe RHD and persistent valvular disease, the European Society of Cardiology recommends continuing prophylaxis for minimum 10 years after most recent acute rheumatic fever OR until 40 years of age, whichever is longer 8, 10
The European Society of Cardiology suggests that lifelong prophylaxis should be considered in high-risk patients based on severity of valvular heart disease and exposure to group A streptococcus 8, 10

Patients with prosthetic valves or prosthetic material used in valve repair require endocarditis prophylaxis for high-risk dental and surgical procedures, according to the European Society of Cardiology 10

The European Society of Cardiology explicitly contraindicates discontinuing secondary prophylaxis after valve surgery, as this does not eliminate the risk of recurrent acute rheumatic fever 8, 9
The European Society of Cardiology advises against assuming valve replacement eliminates rheumatic fever risk, as patients remain susceptible to group A streptococcus infection and recurrent acute rheumatic fever 8