Longitudinal characterization of carotid siphon calcifications: A CT-based population study

Area of Science:

• Cardiovascular research
• Neuroimaging
• Vascular aging

Background:

• Carotid siphon calcifications (CSC) are indicators of cerebrovascular aging and vascular damage.
• Limited longitudinal data exists on the progression of CSC.
• Understanding CSC progression is crucial for assessing vascular health in aging populations.

Purpose of the Study:

• To investigate the progression of carotid siphon calcifications (CSC) in middle-aged and older adults.
• To identify demographic and cardiovascular risk factors associated with CSC progression.

Main Methods:

• Prospective cohort study in a rural Ecuadorian population.
• Non-enhanced CT scans used to assess CSC progression over an average of 7.4 years.
• Woodcock's scale graded CSC; progression defined as ≥1 grade increase. Poisson and multinomial logistic regression models were employed.

Main Results:

• The study included 396 participants (mean age 57.5 years; 45% women).
• CSC progression occurred in 4.3% of participants (0.78 events per 100 person-years).
• Smoking (IRR: 3.83) and hypertension (IRR: 3.67) were significant predictors of CSC progression.

Conclusions:

• CSC progression is slow but can occur with age, smoking, and hypertension.
• Routine CT monitoring for CSC progression is not clinically justified due to low rates.
• Controlling modifiable risk factors like smoking and hypertension is vital for vascular health.