Related Experiment Video

Updated: May 6, 2026

An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat
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An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat

Published on: May 19, 2020

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Endocarditis of the mitral valve posteromedial papillary muscle

Narain Moorjani1, Rasheed Saad, Patrick Gallagher

  • 1Department of Cardiothoracic Surgery, Southampton General Hospital, Southampton, UK.

Journal of Cardiac Surgery
|October 25, 2013
PubMed

Insights

Intravenous drug use can lead to severe heart infections, including aortic root abscesses and papillary muscle rupture. Staphylococcus aureus was identified as the causative agent in this case.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Cardiac Surgery

Background:

  • Intravenous drug abuse is a significant risk factor for infective endocarditis.
  • Aortic root abscesses and papillary muscle rupture are severe complications of endocarditis.

Observation:

  • A 36-year-old intravenous drug abuser presented with symptoms of severe cardiac compromise.
  • The patient exhibited an aortic root abscess and partial rupture of the posteromedial papillary muscle.

Findings:

  • Surgical intervention included aortic and mitral valve replacement.
  • Histological and microbiological analysis confirmed methicillin-sensitive Staphylococcus aureus (MSSA) infection of the papillary muscle.

Implications:

  • This case highlights the critical need for prompt diagnosis and management of infective endocarditis in intravenous drug users.
  • Effective antibiotic therapy targeting MSSA is crucial for successful treatment outcomes.
  • Understanding the specific pathogens involved aids in tailoring treatment strategies for cardiac infections.

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