Myocardial infarction in the young.

Area of Science:

• Cardiology
• Internal Medicine
• Public Health

Background:

• Myocardial infarction (MI) in younger individuals (<40 years) presents unique challenges in understanding coronary artery disease (CAD) patterns.
• Comparing CAD severity and risk factors between younger and older MI patients is crucial for targeted prevention and treatment strategies.

Purpose of the Study:

• To compare the angiographic findings and risk factors in patients with myocardial infarction (MI) younger than 40 years versus those over 40 years.
• To assess the severity of coronary stenosis using a coronary index (CI) and identify differences in disease patterns.

Main Methods:

• Coronary angiography was performed on 88 patients aged <40 with MI (Group I) and 88 patients aged >40 with MI (Group II).
• Coronary stenosis severity was quantified using a coronary index (CI).
• Prevalence of risk factors including smoking and diabetes was recorded for both groups.

Main Results:

• The severity of coronary artery disease, as indicated by CI, was lower in younger patients (Group I: CI=6.2) compared to older patients (Group II: CI=8.4).
• Normal coronary arteries (16% vs 5.7%) and single-vessel disease (41% vs 23%) were more prevalent in the younger MI group.
• Smoking was a more common risk factor in Group I (66% vs 42%), while diabetes was more prevalent in Group II (4.5% vs 21.5%).

Conclusions:

• Younger patients experiencing myocardial infarction exhibit distinct coronary artery disease profiles, characterized by less extensive disease and a higher prevalence of single-vessel involvement.
• Smoking emerges as a predominant risk factor for MI in younger populations, contrasting with the higher incidence of diabetes in older MI patients.
• These findings underscore the need for age-specific risk factor assessment and management strategies in myocardial infarction patients.