[Prognostic significance of arterial stiffness parameters in the identification of very high-risk patients]

Area of Science:

• Cardiovascular Medicine
• Vascular Biology
• Biomedical Engineering

Background:

• Vascular wall properties are crucial for predicting cardiovascular events.
• New indicators for cardiovascular risk assessment are under active investigation.
• Understanding arterial stiffness is key to managing cardiovascular health.

Purpose of the Study:

• To evaluate the cardio-ankle vascular index (CAVI) and augmentation index (AI) as predictors of very high cardiovascular risk.
• To assess the role of CAVI in identifying patients with a history of myocardial infarction.
• To compare the prognostic value of CAVI and AI against established risk factors like age.

Main Methods:

• A cohort of 288 men (aged 40-60) was studied, including 133 with recent myocardial infarction (very high risk) and 155 without cardiovascular history.
• Cardio-ankle vascular index (CAVI) and augmentation index (AI) were measured using the Fukuda denshi VS-1500 VaSera sphygmograph.
• Multivariate logistic regression and ROC analysis were employed to determine predictive capabilities.

Main Results:

• CAVI demonstrated a statistically significant role in predicting very high cardiovascular risk (OR=1.417 per unit increase).
• The prognostic accuracy of CAVI (AUC=0.70) was comparable to age (AUC=0.75) and superior to AI (AUC=0.641).
• The studied factors explained 31% of the variability in classifying patients into the very high-risk group, with the overall predictive model achieving good quality (AUC=0.77).

Conclusions:

• CAVI is a valuable and significant indicator for predicting very high cardiovascular risk in men, particularly those with a recent history of myocardial infarction.
• CAVI offers prognostic information on arterial stiffness that complements traditional risk factors.
• The findings support the clinical utility of CAVI in risk stratification for cardiovascular disease.