Subclinical Atherosclerosis Progression in Low-Risk, Middle-Aged Adults: Carotid Leads Femoral in IMT Increase but Not in Plaque Formation

Abstract

This study investigated subclinical atherosclerosis progression in low-risk, middle-aged adults (N = 141; a mean age of 49.6 ± 4.7 years) using a 5-year ultrasound follow-up. We compared the involvement of the carotid and femoral arteries. Methods: Clinical data, risk factors, carotid/femoral intima-media thickness (IMT), and plaque presence were analyzed. Results: Cardiovascular risk factors and scores increased significantly at follow-up. Both carotid and femoral mean IMT increased (p p p p < 0.001), with a significant increase at the end of follow-up in both territories. Conclusions: This study demonstrates significant subclinical atherosclerosis progression in low-risk, middle-aged adults over 5 years. Carotid arteries showed a faster progression rate of mean IMT and a higher prevalence of pathological nomogram-based mean IMT compared to the femoral arteries. However, plaque burden was similar in both territories, with greater progression in femorals. Identifying carotid and femoral atherosclerosis burden may be a valuable tool for risk stratification in this population.

Keywords

• atherosclerosis
• carotid artery plaque
• carotid intima-media thickness
• femoral artery plaque
• femoral intima-media thickness
• short-term progression of atherosclerosis