What condition would require a patient to take endocarditis prophylaxis before dental work?

A condition that necessitates endocarditis prophylaxis before dental work is the presence of specific heart conditions that significantly increase the risk of infective endocarditis during procedures that could introduce bacteria into the bloodstream, such as dental work. A previous coronary artery bypass graft (CABG) could indicate underlying cardiovascular issues, but it is not typically one of the primary conditions listed in guidelines for requiring antibiotic prophylaxis.

Rather, the conditions more commonly recognized for requiring prophylaxis include prosthetic heart valves, history of infective endocarditis, congenital heart defects, and heart transplant recipients who develop heart valve disease. While a CABG itself might show significant coronary artery disease, the guidelines don't explicitly state it as a direct requirement for prophylaxis in most circumstances unless there are additional risk factors or complications.

On the other hand, a common valvular lesion often indicates a more serious change in the heart that could warrant prophylactic antibiotics due to an increased risk for endocarditis. Issues such as aortic or mitral regurgitation, or other valvular defects, are notably significant in this context.

Severe asthma does not relate to endocarditis risk, and severe hypertension is generally a systemic condition without a direct link to increased susceptibility for endocarditis