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Updated: May 28, 2026

Myocardial Infarction and Functional Outcome Assessment in Pigs
Published on: April 25, 2014
Aneurysm of the left aortic sinus causing acute myocardial infarction
Jan-Peter Smedema1, Vernon Freeman, Johan Brink
1Netcare N1 City Hospital, Cape Town, South Africa.
Insights
A young male experienced acute ST-segment elevation myocardial infarction caused by a large aneurysm compressing the circumflex coronary artery. This case highlights a rare cause of myocardial infarction.
Area of Science:
- Cardiology
- Cardiovascular Surgery
- Medical Case Reports
Background:
- Aneurysms of the sinus of Valsalva are rare cardiovascular abnormalities.
- Coronary artery compression can lead to myocardial ischemia and infarction.
Observation:
- A young male presented with symptoms of acute ST-segment elevation myocardial infarction.
- Imaging revealed a large aneurysm of the left sinus of Valsalva compressing the circumflex coronary artery.
Findings:
- The circumflex coronary artery was significantly narrowed due to extrinsic compression by the aneurysm.
- The patient's myocardial infarction was directly attributed to this coronary artery compromise.
Implications:
- This case underscores the importance of considering rare anatomical variations in the diagnosis of myocardial infarction.
- Management strategies must address both the acute ischemic event and the underlying structural anomaly.
Abstract:
This report describes the findings and management of a young male who presented with an acute ST-segment elevation myocardial infarction due to compression of the circumflex coronary artery by a large aneurysm of left sinus of Valsalva.
Related Concept Videos
Aortic Regurgitation I: Introduction
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Aneurysm II: Clinical Manifestations and Diagnostic Studies
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations
Mitral Stenosis I: Introduction
Aneurysm I: Introduction
