Staphylococcus lugdunensis endocarditis in a young, previously healthy female

Reported here is a case of native valve infective endocarditis in which Sta phylococcus lugdunensis was isolated from blood cultures as well as from th e mitral valve. It is suggested that tube coagulase-negative staphylococci isolated from blood cultures of patients with infective endocarditis be con sidered carefully for possible clinical significance. The use of the ornith ine carboxylase test as a simple screening method for identification of Sta phylococcus lugdunensis is recommended.