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Published on: July 2, 2018
[Acute myocardial infarction due to external coronary artery compression in prosthetic valve endocarditis]
Gian Marco Dacquino1, Stefania Falcone1, Chiara Minoia1
1Dipartimento di Cardiologia, Presidio Ospedaliero di Gallarate, ASST Valle Olona (VA).
Insights
A rare case of acute myocardial infarction due to coronary artery compression from a perivalvular abscess in infective endocarditis is presented. This highlights the importance of considering coronary compression in acute coronary syndromes complicating endocarditis.
Area of Science:
- Cardiology
- Infectious Diseases
- Pathology
Background:
- Acute myocardial infarction (AMI) and cardiogenic shock are life-threatening cardiac emergencies.
- Infective endocarditis (IE) is a serious infection of the heart valves.
- Bioprosthetic aortic valve endocarditis presents unique diagnostic challenges.
Observation:
- A patient presented with AMI and cardiogenic shock.
- Coronary angiography revealed no obstructive coronary artery disease.
- The patient had an unknown bioprosthetic aortic valve endocarditis.
Findings:
- Autopsy confirmed external compression of coronary arteries by a perivalvular abscess.
- The abscess was the likely cause of the myocardial infarction.
- This case demonstrates a rare complication of infective endocarditis.
Implications:
- Coronary artery compression should be included in the differential diagnosis of AMI in patients with infective endocarditis.
- Early recognition of this rare complication can potentially alter patient management.
- This case underscores the importance of comprehensive autopsy in unexplained cardiac events.
Abstract:
We describe the case of a patient presenting with acute myocardial infarction complicated by cardiogenic shock in the setting of an unknown bioprosthetic aortic valve endocarditis and in absence of obstructive coronary artery disease. Given the angiographic finding, the most likely etiology was external compression by a perivalvular abscess, which was confirmed during autopsy. Although rare, coronary artery compression should be considered in the differential diagnosis of acute coronary syndromes complicating infective endocarditis.
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Endocarditis I: Introduction
Endocarditis III: Medical Management
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Endocarditis II: Clinical Features of Infective Endocarditis
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Myocarditis III: Medical Management

