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A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
Published on: February 7, 2015
[Relationship between large artery elasticity function and coronary heart disease, lower extremity arterial disease
1Department of Vascular Medicine, Peking University Shougang Hospital, Beijing 100144, China.
Insights
In patients with carotid plaque, reduced large artery elasticity is linked to coronary heart disease (CHD) or lower extremity arterial disease (LEAD) in those under 61.66 years. Arterial stiffness is a significant risk factor for these conditions in younger individuals.
Area of Science:
- Cardiovascular Medicine
- Vascular Biology
- Arterial Physiology
Background:
- Carotid plaque is a marker for systemic atherosclerosis.
- Large artery elasticity, assessed by carotid-femoral pulse wave velocity (CF-PWV), is crucial for cardiovascular health.
- Coronary heart disease (CHD) and lower extremity arterial disease (LEAD) are significant causes of morbidity and mortality.
Purpose of the Study:
- To investigate the association between large artery elastic function and the presence of CHD or LEAD in patients with carotid plaque.
- To determine if arterial stiffness is an independent risk factor for CHD/LEAD in this population.
- To explore age-related differences in this association.
Main Methods:
- A cohort of 491 patients with carotid plaque underwent arterial stiffness assessment (CF-PWV) and blood tests.
- Patients were categorized into non-CHD&LEAD and CHD/LEAD groups.
- Multivariate logistic regression analyzed the independent association between high arterial stiffness (CF-PWV > 9 m/s) and CHD/LEAD, stratified by age (mean age 61.66 years).
Main Results:
- The study population exhibited high arterial stiffness (mean CF-PWV 10.71 m/s) and a high prevalence of arteriosclerosis (76.6%) and CHD/LEAD (36.9%).
- Patients with CHD/LEAD had higher prevalence of risk factors including age, male sex, smoking, SBP, HbA1c, Hcy, Cr, and hypertension/diabetes.
- Large artery stiffness (CF-PWV > 9 m/s) was an independent risk factor for CHD/LEAD in patients younger than 61.66 years (OR=3.229, P<0.05), but not in older patients.
Conclusions:
- Patients with carotid plaque often have impaired large artery elasticity.
- Higher large artery stiffness significantly increases the risk of CHD/LEAD in patients with carotid plaque who are younger than 61.66 years.
- Independent risk factors for CHD/LEAD differ between younger and older patients with carotid plaque.
Objective:
To evaluate the relationship between large artery elastic function and coronary heart disease (CHD) or lower extremity arterial disease (LEAD) in patients with carotid plaque.
Methods:
A total of 491 patients with carotid plaque were enrolled into the study with complete data of arterial stiffness detection and blood test [male: 208 and female: 283, and mean age: (61.66±11.60) years]. All the subjects were divided into 2 groups according to CHD or LEAD, namely non-CHD&LEAD group (neither CHD nor LEAD) and CHD/LEAD group (either CHD or LEAD). Accor-ding to the mean age level (age<61.66 years or age>61.66 years), the independent association was analyzed between higher large arterial stiffness (carotid-femoral pulse wave velocity, CF-PWV, CF-PWV>9 m/s) and CHD/LEAD.
Results:
In the present research population, the mean level of arterial stiff-ness was high (the mean CF-PWV was 10.71 m/s), and 76.6% of them had arteriosclerosis, and 36.9% CHD/LEAD. The age, male and smoking proportion, systolic blood pressure (SBP), glycosylated hemoglobin (HbA1c), homocysteine (Hcy), creatinine (Cr), CF-PWV, prevalence rate of hypertension and diabetes mellitus, medication on hypertension, diabetes and hyperlipidemia were higher in CHD/LEAD group, and total cholesterol (TC), high density lipoprotein cholesterol (HDL-C), and low density lipoprotein cholesterol (LDL-C) were lower in CHD/LEAD group than in non-CHD&LEAD group (all P<0.05).In multivariate Logistic regression analysis, the results showed that in the patients with age below 61.66 years, large artery stiffness (CF-PWV>9 m/s) was an independent risk factor of CHD/LEAD (OR=3.229, 95%CI 1.156-9.022, P<0.05); In the patients with age above 61.66 years, there was no independent association between large artery stiffness and CHD/LEAD (P>0.05).
Conclusion:
The large artery elasticity function in the patients with carotid plaque was poor. In the patients with carotid plaque and higher large artery stiffness below 61.66 years, the risk of the prevalence of CHD/LEAD was increased significantly than with normal arterial stiffness. In the patients with carotid plaque below or above 61.66 years, the independent influencing factors on the prevalence of CHD/LEAD were different.
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