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[Infarction with angiographically normal coronary vessels. (20 cases)]
J L Rey1, C Tribouilloy, A Marek
1Service de Cardiologie, Hôpital Sud, Amiens.
Annales De Cardiologie Et D'Angeiologie
|March 1, 1989
Summary
Myocardial infarction in patients with normal coronary angiography primarily affects young individuals, particularly women. Smoking is the main risk factor, with potential links to hormonal medications and genetic predisposition.
Area of Science:
- Cardiology
- Vascular Medicine
- Epidemiology
Background:
- Myocardial infarction (MI) with normal coronary angiography is a recognized clinical entity.
- Understanding the characteristics and risk factors of this specific MI population is crucial for targeted prevention and treatment strategies.
Observation:
- This study analyzed 20 cases of MI with normal coronary angiography over 8 years, representing 0.9% of MI patients undergoing coronary angiography.
- The condition predominantly affects younger patients (mean age 34.3 years), with a significant proportion of women (27%).
- Smoking is the primary risk factor, identified in 75% of men and over 50% of women.
Findings:
- In women, estro-progestative medication use was noted in nearly half of the cases.
- Coronary heredity was reported in one-third of patients.
- MI was the initial manifestation in 68% of cases, often occurring during stress (60%).
Implications:
- The low mortality rate (2%) and infrequent complications (5% recurrence/heart failure) suggest a generally favorable prognosis.
- Pathogenesis may involve coronary artery thrombosis on minimal lesions, potentially triggered by vasospasm or platelet hyperaggregation.
- Further research into the specific mechanisms and preventative measures for this unique MI demographic is warranted.