the association between bacterial endocarditis and structural heart disease?
Known structural heart disease is present in
only approximately 50% of patients who develop bacterial endocarditis. In
patients with known cardiac disease, fewer than 25% present with streptococcal
endocarditis of oral origin and only about 40% of patients with enterococcal
endocarditis develop endocarditis in association with a procedure for which prophylaxis
could have been given. Unfortunately, this implies that even if prophylaxis
were always effective, it is impossible to identify the time of expo-sure in
the majority of cases.