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[Infectious Endocarditis due to Methicillin-sensitive Bovine Staphylococcus aureus;Report of a Case]

Toshio Baba1, Kiyofumi Morishita, Tooru Mawatari

  • 1Department of Cardiovascular Surgery, Hakodate Municipal Hospital, Hakodate, Japan.

Kyobu Geka. the Japanese Journal of Thoracic Surgery
|February 28, 2018
PubMed

Insights

A rare case of bovine Staphylococcus aureus infection in a human led to endocarditis, cerebral bleeding, and multiple aneurysms. This methicillin-sensitive bovine Staphylococcus aureus infection highlights unusual complications and is the first reported in Japan.

Area of Science:

  • Infectious Diseases
  • Cardiology
  • Neurology
  • Vascular Surgery

Background:

  • Infectious endocarditis is a serious condition often caused by Staphylococcus aureus.
  • Bovine Staphylococcus aureus is typically found in cattle and rarely infects humans.
  • Complications can include septicemia, cerebral bleeding, and vascular aneurysms.

Observation:

  • A 19-year-old male presented with infectious endocarditis due to methicillin-sensitive bovine Staphylococcus aureus.
  • The patient experienced occipital lobe cerebral bleeding, severe mitral regurgitation with vegetation, hepatic artery aneurysm, and ruptured splenic artery aneurysm.
  • Cerebral bleeding recurred, necessitating external decompression.

Findings:

  • Successful mitral valve replacement was performed.
  • Coil embolization was used to treat the hepatic and splenic artery aneurysms.
  • The patient was discharged after 92 days, indicating a complex but ultimately manageable clinical course.

Implications:

  • This case represents the first reported instance of methicillin-sensitive bovine Staphylococcus aureus infection in a human in Japan.
  • The unusual presentation underscores the potential for zoonotic transmission of Staphylococcus aureus and its diverse clinical manifestations.
  • Highlights the importance of considering rare pathogens in severe infectious endocarditis and associated vascular complications.

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