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Updated: Sep 27, 2026

Experimental Endocarditis Model of Methicillin Resistant Staphylococcus aureus (MRSA) in Rat
Published on: June 4, 2012
Sudden death in Staphylococcus aureus-associated infective endocarditis due to perforation of a free-wall myocardial
I Anguera1, G Quaglio, B Ferrer
1Cardiovascular Institute, Institut d'Investigacions Biomèdiques August Pi i Sunyer-Hospital Clinic, University of Barcelona, Spain.
Abstract:
Free-wall myocardial abscess perforation with hemopericardium and sudden death is an extremely infrequent complication of infective endocarditis (IE). We describe a case of Staphylococcus aureus-associated native aortic and tricuspid valve endocarditis complicated by a septic myocardial infarction and abscess formation of embolic origin, with fatal rupture into the pericardium. To our knowledge, only 2 cases of myocardial abscess rupture have previously been reported in relation to IE.
Insights
Sudden death from infective endocarditis is rare. This case highlights a fatal myocardial abscess rupture into the pericardium, a complication seen in only a few reported instances.
Area of Science:
- Cardiology
- Infectious Diseases
- Pathology
Background:
- Infective endocarditis (IE) commonly affects heart valves.
- Complications of IE can include systemic embolization and myocardial damage.
- Rupture of cardiac abscesses is a rare but catastrophic event.
Observation:
- A case of Staphylococcus aureus-associated native aortic and tricuspid valve endocarditis is presented.
- The patient developed a septic myocardial infarction with abscess formation of embolic origin.
- The myocardial abscess ultimately ruptured into the pericardium, leading to hemopericardium.
Findings:
- Free-wall myocardial abscess perforation with hemopericardium and sudden death occurred.
- This represents an extremely infrequent complication of infective endocarditis.
- Only two prior cases of myocardial abscess rupture related to IE have been documented.
Implications:
- This case underscores the potential for devastating complications in infective endocarditis.
- Early recognition and aggressive management of IE are crucial to prevent such fatal outcomes.
- Further research into the mechanisms and prevention of myocardial abscess formation in IE is warranted.
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