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Myocardial infarction in young people with normal coronary arteries
M J Williams1, N J Restieaux, C J Low
1Department of Medicine, University of Otago, Dunedin, New Zealand.
Insights
Young adults experiencing myocardial infarction (MI) with normal coronary arteries may suffer from alcohol-induced coronary artery spasm. Prompt diagnosis in patients with chest pain, especially after alcohol or cocaine use, is crucial for timely reperfusion therapy.
Area of Science:
- Cardiology
- Vascular Medicine
Background:
- Myocardial infarction (MI) in young individuals with normal coronary arteries is recognized, but its underlying pathophysiology is not fully understood.
- Potential causes include coronary artery spasm, thrombus formation, minimal atherosclerosis, or spontaneous coronary artery dissection.
Observation:
- Two young men presented with severe chest pain following acute alcohol intoxication.
- Both patients sustained extensive anterior myocardial infarctions.
- Intravascular ultrasound revealed no evidence of atherosclerotic coronary artery disease in either case.
Findings:
- Coronary artery spasm, potentially triggered by acute alcohol intoxication, may contribute to MI in young adults.
- A prothrombotic state and endothelial damage from cigarette smoking could also play a role.
- These factors may collectively lead to acute myocardial infarction in susceptible young individuals.
Implications:
- Acute myocardial infarction in young individuals with normal coronary arteries necessitates consideration of non-atherosclerotic causes.
- Physicians should consider MI in young patients presenting with severe chest pain, particularly those with a history of alcohol or cocaine abuse.
- Early diagnosis and initiation of reperfusion therapy are critical for improving outcomes in these cases.
Abstract:
Myocardial infarction occurring in young people with angiographically normal coronary arteries is well described but the pathophysiology of this condition remains unknown. Coronary artery spasm in association with thrombus formation and minimal atheromatous disease or spontaneous coronary artery dissection are possible causes. Two young men presented with severe chest pain after acute alcohol intoxication and each sustained an extensive anterior myocardial infarction. Investigations including intravascular ultrasound showed no evidence of atherosclerotic coronary artery disease. Coronary artery spasm associated with acute alcohol intoxication as well as prothrombotic state and endothelial damage related to cigarette smoking may be mechanisms leading to acute myocardial infarction in these cases. Acute myocardial infarction occurs in young persons with normal coronary arteries and the diagnosis should be considered in young patients presenting with severe chest pain, particularly those abusing cocaine or alcohol, so that reperfusion therapy can be initiated promptly.