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Increased carotid arterial wall thickness in common hyperlipidemia
1University of Reggio Calabria, Dipartimento di Medicina Sperimentale e Clinica, Catanzaro, Italy.
Insights
Mild to moderate hyperlipidemia is linked to increased intima-media thickness (IMT) in the carotid artery. Higher IMT values in hyperlipidemic patients often correlate with atherosclerotic plaques and cardiovascular disease signs.
Area of Science:
- Cardiovascular Medicine
- Vascular Biology
- Diagnostic Imaging
Background:
- Intima-media thickness (IMT) elevation is noted in diabetes, hypertension, and familial hypercholesterolemia.
- Limited data exist on IMT in milder, more prevalent forms of hyperlipidemia.
- This study investigates IMT in mild to moderate hyperlipidemia.
Purpose of the Study:
- To compare intima-media thickness (IMT) in men with mild to moderate hyperlipidemia versus normolipidemic controls.
- To assess the relationship between hyperlipidemia and carotid artery IMT.
- To identify potential associations with cardiovascular disease markers.
Main Methods:
- A cohort of 50 hyperlipidemic patients and 50 age/sex-matched controls was studied.
- High-resolution B-mode echo-Doppler imaging was used to measure intima-media thickness.
- Standard methods measured blood lipids and glucose; smoking status was recorded.
Main Results:
- Hyperlipidemic patients exhibited significantly higher intima-media thickness (IMT) than controls.
- Smokers showed higher IMT, though not significantly different from non-smokers.
- Elevated IMT (>0.82 mm) was found in 18 hyperlipidemic patients, with 14 having carotid atherosclerotic plaques; 11 showed cardiovascular disease signs and significantly higher IMT.
Conclusions:
- Intima-media thickness (IMT) is increased in mild to moderate hyperlipidemia.
- Highest IMT values are frequently associated with carotid atherosclerotic plaques.
- Enlarged IMT correlates with cardiovascular disease indicators in hyperlipidemic individuals.
Background:
Intima-media thickness has been reported to be increased in several patients with disorders such as diabetes mellitus, systolic hypertension and familial hypercholesterolemia. No data are available for the less severe but more frequent forms of hyperlipidemia. The aim of the present study was to compare the intima-media thickness in men with mild to moderate hyperlipidemia with that in age- and sex-matched normolipidemic controls.
Methods:
Fifty hyperlipidemic patients and 50 controls were enrolled in this study. Intima-media thickness was evaluated from high-resolution B-mode echo-Doppler images. Blood lipids and glucose were measured using standard methods. Cigarette consumption was recorded by questionnaire.
Results:
Intima-media thickness was significantly higher in hyperlipidemic patients than in controls. Smokers, both hyperlipidemic and controls, had higher values of intima-media thickness, although not significantly so, than non-smokers. The distribution of intima-media thickness values ranged from 0.52 to 1.24 mm in hyperlipidemic patients and from 0.46 to 0.82 mm in controls. Eighteen patients with hyperlipidemia had an intima-media thickness larger than 0.82 mm and, of these, 14 had atherosclerotic plaques in the carotid arteries. Furthermore, 11 hyperlipidemic patients showed signs of cardiovascular disease and had significantly enlarged intima-media thickness compared with participants without cardiovascular disease.
Conclusions:
Intima-media thickness in the common carotid artery is enlarged in patients with mild to moderate forms of hyperlipidemia and the highest values of intima-media thickness are frequently associated with atherosclerotic plaques in the carotid arteries and signs of cardiovascular disease.