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The Journal of the Japanese Society for Clinical Microbiology |
Biblioraphy Information
| ArticleTitle |
A case of blood culture-negative endocarditis and septic arthritis of the knee complicated with urinary tract infection caused by Aerococcus urinae |
| Language |
J |
| AuthorList |
Akio Endo1), Yasuhiro Tsuchido4), Kazuaki Otsu1), Akari Ikeda1), Kohei Nagai1), Haruna Takahashi1), Kaneyuki Kida1), Fumiko Nakazeki2), Shin Itakura3), Teruyo Sawa1), Takao Taniguchi1) |
| Affiliation |
1) Department of Clinical Laboratory, Japanese Red Cross Otsu Hospital
2) Department of Cardiology, Japanese Red Cross Otsu Hospital
3) Department of Orthopedics, Japanese Red Cross Otsu Hospital
4) Department of Clinical Laboratory Medicine, Kyoto University Graduate School of Medicine |
| Publication |
J.J.C.M.: 33 (2), 127-133, 2023 |
| Received |
July 21, 2022 |
| Accepted |
January 5, 2023 |
| Abstract |
Aerococcus urinae is a gram-positive cocci which is causative agents of not only urinary tract infection, but also serious infections such as infective endocarditis. We herein report a case of culture negative endocarditis complicated with septic arthritis of the knee caused by A. urinae. An 83-year-old man was admitted to our hospital with left knee joint pain for 4 to 5 days. The patient had fever, swelling and tenderness of the left knee. Gram stain of the joint fluid showed cluster-like Gram positive cocci. The colonies resembling α hemolytic streptococci were observed on blood agar medium, which were identified as A. urinae. A. urinae was also isolated from urine. Although blood culture was negative, transthoracic echocardiography revealed a vegetation (6 mm) on the aortic valve. Thus the patient was diagnosed as culture negative endocarditis complicated with septic arthritis of the knee caused by A. urinae. It is important to consider the possibility of invasive infection when urinary tract infection caused by A. urinae is diagnosed. |
| Keywords |
Aerococcus urinae |
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