Ineffective Antibiotic Prophylaxis: An Unusual Presentation of Infective Endocarditis with Insights into the Appropriateness of Prophylaxis.

The practice of antibiotic prophylaxis for the prevention of infective endocarditis (IE) has undergone a major paradigm shift over the past few decades. From the earlier practice of antibiotic prophylaxis for all patients undergoing dental procedures, since 2006, the American College of Cardiology/American Heart Association (ACC/AHA) guidelines have now narrowed down the indications to use it only in patients at high risk for IE. A true concern for antibiotic resistance remains eminent when used without appropriate indications. Through this case presentation of IE and the associated preceding use of antibiotics, we take this opportunity to explain the appropriateness of prophylaxis in patients from different risk groups. We also shed some light on alternative, effective, and, yet, harmless measures for the prevention of IE in patients at low risk.