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Coronary atherosclerosis: is the process focal or diffuse among patients with symptomatic or fatal myocardial
1Baylor Cardiovascular Institute, Baylor University Medical Center, Dallas, Texas 75246, USA.
Insights
Coronary atherosclerosis is widespread in patients with myocardial ischemia, affecting all major epicardial arteries. Histologic analysis shows fibrous tissue is the primary component of atherosclerotic plaques in these patients.
Area of Science:
- Cardiovascular Pathology
- Atherosclerosis Research
Background:
- Coronary atherosclerosis is a significant contributor to myocardial ischemia.
- Understanding the extent and composition of coronary artery disease is crucial for patient outcomes.
Purpose of the Study:
- To characterize the extent and histological composition of coronary atherosclerosis in patients experiencing symptomatic or fatal myocardial ischemia.
Main Methods:
- Histologic evaluation of 5-mm segments from major epicardial arteries (right, left main, left anterior descending, left circumflex).
Main Results:
- Coronary atherosclerosis is a diffuse and extensive process affecting all four major epicardial arteries.
- Histologic evaluation revealed involvement along the entire lengths of these arteries.
- Fibrous tissue was identified as the dominant component of atherosclerotic plaques.
Conclusions:
- Coronary atherosclerosis in patients with myocardial ischemia is a comprehensive arterial disease.
- The findings highlight the widespread nature of plaque burden and its fibrous composition.
Abstract:
Coronary atherosclerosis among patients with symptomatic or fatal myocardial ischemia is a diffuse and extensive process, and it affects all 4 of the major (right, left main, left anterior descending, and left circumflex) epicardial arteries. Histologic evaluation of 5-mm arterial segments reveals involvement of the entire lengths of the epicardial arteries, although the size of plaque may vary from segment to segment. The dominant component of atherosclerotic plaque among patients with symptomatic or fatal myocardial ischemia is fibrous tissue.