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Myocardial infarction in young adults under 30 years: risk factors and clinical course
Insights
Young patients experiencing acute myocardial infarction (MI) often have smoking as a primary risk factor, with some cases showing no conventional risk factors. Circulating aggregated platelets were elevated in all patients one year post-MI.
Area of Science:
- Cardiology
- Internal Medicine
- Vascular Biology
Background:
- Acute myocardial infarction (MI) in individuals under 30 is uncommon.
- Understanding risk factors and clinical course in young MI patients is crucial.
Purpose of the Study:
- To describe the clinical features and outcomes of acute myocardial infarction in patients under 30 years of age.
- To identify prevalent risk factors and complications in this demographic.
Main Methods:
- Retrospective analysis of 30 patients under 30 with acute MI.
- Clinical data collection including risk factors, MI characteristics, and complications.
- Cardiac catheterization in 25 patients and follow-up for up to 15 years.
- Measurement of circulating aggregated platelets one year post-MI in 18 patients.
Main Results:
- Smoking was the most common risk factor (66%).
- Seven patients (23%) had no conventional risk factors.
- Elevated circulating aggregated platelets were observed in all patients tested one year post-MI.
- Mortality within five years was 10% (3/30), with 50% developing complications like angina pectoris.
Conclusions:
- Acute MI in young adults frequently presents with smoking as a major risk factor, and sometimes without traditional risk factors.
- Elevated circulating aggregated platelets post-MI may indicate ongoing vascular inflammation or damage.
- Young MI patients face significant risks of long-term complications and recurrent events.
Abstract:
The clinical features and course of 30 patients (26 men and 4 women) under 30 years of age (mean age 27.3 years) with an acute myocardial infarction (MI) are described. The most common risk factor among this group of patients was smoking in 20 patients (66%). The prevalence of the other risk factors was low: hyperlipidemia in four patients and family history of ischemic disease in another four patients, diabetes mellitus, hypertension, and obesity each in one patient. Seven patients (23%) had none of the conventional risk factors. Three patients were exerting themselves prior to the onset of their MI pain; all of them had normal coronaries. Five patients experienced chest pain prior to MI, among them only two experienced classical angina pectoris. Eighteen patients underwent uncomplicated MI. The complications in the other 12 during the acute MI were rhythm disturbances in eight and congestive heart failure in four. Cardiac catheterization was performed in 25 patients. The occurrence of zero, one, or multivessel disease was equal. The 30 patients were followed up from six months to 15 years (mean 7 years). In 18 patients circulating aggregated platelets were measured one year after the MI. Elevated values were found in all of them (mean +/- SD 34.9 +/- 9.1%). In 6 of the 18, all heavy smokers, extreme values were found in the range of 39-55%. Three out of the 30 patients died within five years after their first MI. The other 15 patients developed complications, most of them angina pectoris. Five patients were hospitalized for reinfarction. None of the 30 underwent aortocoronary bypass operation.(ABSTRACT TRUNCATED AT 250 WORDS)