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[Coronary arteriography in recent myocardial infarct]
Archives Des Maladies Du Coeur Et Des Vaisseaux
|May 1, 1977
Summary
Coronary arteriography after acute myocardial infarction is safe and reveals significant blockages. This diagnostic tool identifies critical lesions, enabling potential bypass surgery in many patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Vascular Imaging
Background:
- Acute myocardial infarction (MI) necessitates timely assessment of coronary artery status.
- Understanding coronary anatomy and lesion severity post-MI is crucial for treatment planning.
Purpose of the Study:
- To evaluate the safety and diagnostic yield of selective coronary arteriography in patients with recent transmural acute myocardial infarction.
- To identify the incidence and characteristics of coronary artery lesions and collateral circulation following MI.
Main Methods:
- Selective coronary arteriography performed between 7 and 29 days post-MI in 60 patients.
- Analysis of lesion location, severity (stenosis/occlusion), distal bed status, and collateral circulation.
- Assessment of associated lesions in non-infarct related arteries.
Main Results:
- Arteriography was well-tolerated in the early post-MI period.
- Anterior MI cases showed high rates of anterior descending artery stenosis (64%) and significant collateral circulation (80%).
- Posterior-inferior MI cases frequently involved complex lesions in the right coronary and circumflex arteries (75%), with 37% potentially benefiting from bypass surgery.
Conclusions:
- Coronary arteriography is a safe and valuable investigation in the subacute phase of MI.
- A high incidence of significant coronary stenoses (43%) at the infarct border zone was observed.
- The study highlights the frequent presence of associated coronary lesions, suggesting potential for preventive bypass surgery in a substantial number of patients (33%).