title: The pitfall of coagulase-negative staphylococci: a case of Staphylococcus lugdunensis endocarditis.
abstract: We report a case of a 60-year-old woman. She was transferred from a local hospital to our cardiovascular medicine department with a diagnosis of infectious endocarditis due to Staphylococcus lugdunensis. Transthoracic echocardiograph confirmed the presence of large vegetations on the native aortic and mitral valve, and subsequent severe regurgitation due to the aortic and mitral valve destruction. Emergent operation was performed and patient's life was barely rescued. However, S. lugdunensis belongs to coagulase-negative staphylococci, which are generally regarded as relatively avirulent bacterium, the endocarditis caused by S. lugdunensis can be invasive and often resembles endocarditis due to Staphylococcus aureus. Therefore, whenever this organism is found in patients with endocarditis, early surgical treatment of the infected valve should be considered.
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Takahashi
authors.forename: Toshio
authors.initials: T
authors.lastname: Shimada
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Ishibashi
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yoshitomi
authors.forename: Takashi
authors.initials: T
authors.lastname: Sugamori
authors.forename: Takeshi
authors.initials: T
authors.lastname: Sakane
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Sato
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Oyake
authors.forename: Yo
authors.initials: Y
authors.lastname: Murakami
mesh_terms: D003030:Coagulase / Q000097:blood*; D004697:Endocarditis, Bacterial / Q000097:blood / Q000175:diagnosis* / Q000201:enzymology; D005260:Female; D006801:Humans; D008875:Middle Aged; D013203:Staphylococcal Infections / Q000097:blood / Q000175:diagnosis* / Q000201:enzymology; D013210:Staphylococcus / Q000201:enzymology*
chemical_list: D003030:Coagulase