INBDE (Integrated National Board Dental Examination) Practice Exam

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What pathogen is often associated with infective endocarditis?

  1. Group A Strep

  2. Beta Hemolytic Strep

  3. Alpha Hemolytic Strep

  4. Gamma Hemolytic Strep

The correct answer is: Alpha Hemolytic Strep

Alpha Hemolytic Strep is often associated with infective endocarditis. This is because alpha-hemolytic streptococci, specifically Viridans group streptococci, are a common cause of infective endocarditis. These bacteria can enter the bloodstream through various routes, including dental procedures, and adhere to damaged heart valves or endocardium. Consequently, they can proliferate and lead to the formation of vegetations on the heart valves, causing infective endocarditis. The other options, Group A Strep, Beta Hemolytic Strep, and Gamma Hemolytic Strep, are not typically associated with infective endocarditis.

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