Antibiotic Prophylaxis for Bioprosthetic TAVR

Introduction to Prophylaxis

The American College of Cardiology recommends antibiotic prophylaxis for patients with bioprosthetic TAVR valves before dental procedures that manipulate gingival tissue, the periapical region of teeth, or perforate the oral mucosa 1, 2
The European Society of Cardiology guidelines state that bioprosthetic TAVR valves are prosthetic cardiac valves and fall into the highest-risk category requiring antibiotic prophylaxis before at-risk dental procedures 1, 2, 3

Prophylaxis is indicated for dental procedures involving manipulation of gingival tissue, manipulation of the periapical region of teeth, or perforation of the oral mucosa, including scaling and root canal procedures, according to the American College of Cardiology 1, 3
The American Heart Association recommends that prophylaxis is not needed for routine dental X-rays, placement or adjustment of removable prosthodontic or orthodontic appliances, shedding of deciduous teeth, or trauma to the lips and oral mucosa 3

Infective endocarditis after TAVR occurs at rates equal to or exceeding those associated with surgical aortic valve replacement, with a devastating 75% one-year mortality rate, as reported by the American College of Cardiology 1, 2
All transcatheter-implanted prostheses and homografts are considered high-risk cardiac conditions requiring prophylaxis, according to the American College of Cardiology and the European Society of Cardiology 1, 2, 4

The American College of Cardiology recommends a standard regimen of amoxicillin 2 g orally, given 30-60 minutes before the procedure, for patients without penicillin allergy 1, 4, 5
For patients with penicillin allergy, the American College of Cardiology recommends alternative regimens, including cephalexin 2 g orally, or cefazolin or ceftriaxone 1 g IM or IV, unless the patient has a history of anaphylaxis, angioedema, or urticaria with penicillin 3, 4, 5

The American College of Cardiology and the American Heart Association state that antibiotic prophylaxis is not recommended for gastrointestinal or genitourinary endoscopic procedures, including colonoscopy, esophagogastroduodenoscopy, cystoscopy, or transesophageal echocardiography, in the absence of active infection, even in patients with prosthetic valves like TAVR 1, 2, 4
The European Society of Cardiology guidelines note that there is no compelling evidence that bacteremia from respiratory tract, gastrointestinal, or genitourinary procedures causes infective endocarditis 3

The European Society of Cardiology recommends that potential sources of dental sepsis should be eliminated at least 2 weeks before TAVR implantation whenever possible, unless the procedure is urgent 3, 5
The American College of Cardiology emphasizes that this proactive approach is more important than relying solely on prophylaxis for reducing infective endocarditis risk 5

The American College of Cardiology notes that no randomized controlled trials have ever been performed to evaluate the efficacy of infective endocarditis prophylaxis in humans 1, 4
A 2022 Cochrane systematic review concluded that there is no definitive evidence that antibiotic prophylaxis is effective or ineffective, but the consensus remains that prophylaxis is reasonable for the highest-risk patients given the catastrophic outcomes of infective endocarditis in prosthetic valve patients, as reported by the American College of Cardiology 1