NDLI: Aerococcus urinae, a rare cause of aortic root abscess: a case report

Content Provider	Springer Nature : BioMed Central
Author	Tiong, Chong Wei Bartolo, Caroline Walton, Aaron Athan, Eugene
Abstract	Background Aerococcus urinae is a bacterium of emerging clinical interest that most commonly causes urinary tract infections (UTI) but can also result in invasive infections. It is a catalase-negative, alpha-haemolytic gram-positive coccus that grows in clusters or tetrads and usually causes urinary tract infections. While rare, infective endocarditis must be considered when A. urinae is isolated in blood culture. The mortality rate of A. urinae infective endocarditis is similar to overall endocarditis mortality. We report a rare case of aortic root abscess caused by A. urinae. Case presentation An 82-year-old Caucasian man presented to hospital with behavioural change and severe malnutrition and was managed for psychotic depression. On day 34 of his inpatient stay, a febrile episode prompted blood cultures, which grew Aerococcus. urinae. Investigations revealed a bicuspid aortic valve, aortic valve endocarditis and aortic root abscess. He also had prostatomegaly. He underwent aortic valve replacement, received 6 weeks of intravenous ceftriaxone and recovered. Conclusion Infective endocarditis should be considered in patients with persistent Aerococcus urinae bacteraemia. Accurate identification with mass spectrometry is recommended to avoid misidentification as staphylococcus, streptococcus or enterococcus, which is a possibility with conventional laboratory methods.
Related Links	https://jmedicalcasereports.biomedcentral.com/counter/pdf/10.1186/s13256-022-03564-8.pdf
Ending Page	5
Page Count	5
Starting Page	1
File Format	HTM / HTML
ISSN	17521947
DOI	10.1186/s13256-022-03564-8
Journal	Journal of Medical Case Reports
Issue Number	1
Volume Number	16
Language	English
Publisher	BioMed Central
Publisher Date	2022-11-17
Access Restriction	Open
Subject Keyword	Medicine Public Health General Practice Family Medicine Primary Care Medicine Surgical Oncology Internal Medicine Endocarditis Aerococcus Bacteraemia Case report Medicine/Public Health
Content Type	Text
Resource Type	Case study
Subject	Medicine
Journal Impact Factor	0.9/2023

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