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

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 urinar...

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Autores principales: Tiong, Chong Wei, Bartolo, Caroline, Walton, Aaron, Athan, Eugene
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9670598/
https://www.ncbi.nlm.nih.gov/pubmed/36397095
http://dx.doi.org/10.1186/s13256-022-03564-8
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author Tiong, Chong Wei
Bartolo, Caroline
Walton, Aaron
Athan, Eugene
author_facet Tiong, Chong Wei
Bartolo, Caroline
Walton, Aaron
Athan, Eugene
author_sort Tiong, Chong Wei
collection PubMed
description 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.
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spelling pubmed-96705982022-11-18 Aerococcus urinae, a rare cause of aortic root abscess: a case report Tiong, Chong Wei Bartolo, Caroline Walton, Aaron Athan, Eugene J Med Case Rep Case Report 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. BioMed Central 2022-11-17 /pmc/articles/PMC9670598/ /pubmed/36397095 http://dx.doi.org/10.1186/s13256-022-03564-8 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Case Report
Tiong, Chong Wei
Bartolo, Caroline
Walton, Aaron
Athan, Eugene
Aerococcus urinae, a rare cause of aortic root abscess: a case report
title Aerococcus urinae, a rare cause of aortic root abscess: a case report
title_full Aerococcus urinae, a rare cause of aortic root abscess: a case report
title_fullStr Aerococcus urinae, a rare cause of aortic root abscess: a case report
title_full_unstemmed Aerococcus urinae, a rare cause of aortic root abscess: a case report
title_short Aerococcus urinae, a rare cause of aortic root abscess: a case report
title_sort aerococcus urinae, a rare cause of aortic root abscess: a case report
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9670598/
https://www.ncbi.nlm.nih.gov/pubmed/36397095
http://dx.doi.org/10.1186/s13256-022-03564-8
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