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Age-dependent impairment of coronary collateral development in humans
Insights
Age significantly impacts collateral circulation development in patients with coronary artery disease and long-standing effort angina. Younger patients exhibit better collateral development compared to older individuals, highlighting age as a key determinant.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Clinical Research
Background:
- Collateral circulation is crucial for myocardial perfusion in coronary artery disease (CAD).
- Factors influencing collateral development in CAD patients require further elucidation.
- Long-standing effort angina suggests a stimulus for collateral formation.
Purpose of the Study:
- To investigate the influence of patient age on collateral circulation development.
- To assess collateralization in patients with acute myocardial infarction and established angina.
Main Methods:
- Coronary cineangiography was used to evaluate collateral development in 102 patients.
- Patients had an acutely occluded infarct-related coronary artery within 12 hours of first myocardial infarction.
- Patients were stratified into younger (< or = 64 years) and older (> or = 65 years) age groups.
Main Results:
- Well-developed collateral circulation was present in 53% of all patients.
- The prevalence of well-developed collateral circulation was significantly higher in younger patients (69%) compared to older patients (39%) (P = 0.003).
Conclusions:
- Age is a key determinant of collateral development in patients with CAD and stimuli for collateralization.
- Younger patients demonstrate superior collateral circulation compared to older patients under similar conditions.
- Findings suggest age-related changes may impair the adaptive response of collateral vessel formation.
Abstract:
The purpose of this study was to evaluate whether age influences collateral development in patients with coronary artery disease. The extent of collateral development to the area perfused by the infarct-related artery was graded, depending on the degree of opacification of the occluded infarct-related artery. We evaluated the extent of collateral development using coronary cineangiography in 102 patients with an acutely occluded infarct-related coronary artery within 12 h after the onset of the first acute myocardial infarction, and who had a history of long-standing effort angina. Well-developed collateral circulation was observed in 54 (53%) of the patients. The patients were divided into two groups based on their age. The prevalence of well-developed collateral circulation in the younger group (< or = 64 years, n = 48) was 69% (33 of 48), being significantly (P = 0.003) higher than 39% (21 of 54) in the older group (> or = 65 years, n = 54). We conclude that in the presence of stimuli for collateral development i.e., long-standing effort angina accompanied by severe coronary stenosis, the age of patients is a key determinant of collateral development.
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