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Reference equations for pulse wave velocity, augmentation index, amplitude of forward and backward wave in a European general adult population
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Reference equations for pulse wave velocity, augmentation index, amplitude of forward and backward wave in a European general adult population
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Journal Article
Reference equations for pulse wave velocity, augmentation index, amplitude of forward and backward wave in a European general adult population
2024
Overview
Pulsatile hemodynamics have been shown to be independent predictors of cardiovascular events. The aim of the current study was to describe four pulsatile hemodynamic markers in a large, well-established, population-based cohort and to provide reference equations for sex- and age-based standardization of these measurements. 6828 adult participants from the Austrian LEAD (Lung, hEart, sociAl, boDy) cohort study, who were free from overt cardiovascular disease, non-diabetic based on blood test results, and had no history of pharmacological treatment for hypertension, dyslipidemia, and diabetes, comprised the “reference population”. Carotid-femoral pulse wave velocity (cfPWV), augmentation index (AIx), amplitude of forward wave (Pf), and backward wave (Pb) were described in different age categories for both sexes. Sex-specific reference equations for cfPWV, AIx, Pf, and Pb with age as the predictive variable were created using the Lambda-Mu-Sigma (LMS) method. All four parameters increased with age. CfPWV and Pf were higher in males than females, especially in young and middle-age groups (
P
< 0.001). AIx was higher in females than males in all age categories (
P
< 0.001). Pb was also higher in females than males in age groups older than 40 years (
P
< 0.01). Reference equations for the skewness (Lambda), median (Mu), and coefficient of variation (Sigma) values were determined, enabling the calculation of sex- and age-standardized values (z-scores) for each individual’s pulsatile hemodynamic measurement, and an online application was developed. Reference equations derived from a large population-based dataset constitute a suitable tool for the standardization of pulsatile hemodynamics and for the accurate interpretation of vascular aging.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
