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Risk factors for changes in aorto-iliac arterial compliance in healthy men
Insights
Arterial compliance decreases with age and cardiovascular risk factors like high blood pressure and cholesterol. This study quantifies these declines in healthy men, highlighting age and lipids as key independent factors.
Area of Science:
- Cardiovascular Physiology
- Vascular Biology
- Biomedical Engineering
Background:
- Arterial stiffness, a marker of vascular aging, is associated with cardiovascular disease.
- Pulse wave velocity (PWV) is a non-invasive measure of arterial stiffness.
- Understanding factors influencing arterial compliance is crucial for cardiovascular risk assessment.
Purpose of the Study:
- To measure arterial wall compliance using Doppler ultrasound in healthy men.
- To investigate the relationship between arterial compliance and cardiovascular risk factors including age, blood pressure, and lipid profiles.
- To determine the independence of these relationships.
Main Methods:
- Doppler ultrasound was employed to measure pulse wave velocity (PWV) in the aorta and iliac arteries.
- Arterial wall compliance was calculated from the measured PWV in 45 healthy male participants.
- Statistical analyses were performed to assess correlations between compliance and various risk factors.
Main Results:
- Arterial compliance significantly decreased with advancing age.
- Reduced arterial compliance was observed with elevated blood pressure, increased serum cholesterol and triglyceride levels, and decreased high-density lipoprotein cholesterol.
- The correlation between compliance and age was independent of other risk factors; lipid status correlations were independent of age and blood pressure.
Conclusions:
- Age and cardiovascular risk factors, particularly lipids, are significant independent determinants of arterial compliance in healthy men.
- Doppler ultrasound-derived PWV is a valuable tool for assessing arterial wall compliance.
- Findings underscore the importance of managing age-related vascular changes and metabolic risk factors to maintain arterial health.
Abstract:
Doppler ultrasound was used to measure pulse wave velocity down the aorta and iliac arteries. Arterial wall compliance was calculated from pulse wave velocity in 45 apparently healthy men. Their arterial compliance fell significantly with advancing age, raised blood pressure, increased serum cholesterol and triglyceride levels, and reduced serum high density lipoprotein cholesterol levels. The correlation between compliance and age was independent of the other risk factors, and the correlation between compliance and lipid status was independent of age and blood pressure. There was no significant correlation between compliance and area under the glucose tolerance curve.