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- W2000467089 abstract "The ambulatory arterial stiffness index (AASI) has been proposed as a novel measure of arterial stiffness and has been prospectively shown to predict stroke and cardiovascular death, but not cardiac death. This index has prompted considerable controversy as to whether it is a true measure of arterial stiffness.The present study aimed to examine three different measures of arterial stiffness - pulse wave velocity (PWV; Complior), wave reflection [augmentation index (AIx)] and AASI - in a large hypertensive population, comparing their determinants and intercorrelations, both unadjusted and adjusted for confounders, and using Bland-Altman analysis to determine 95% confidence intervals for the ability of the AASI to predict PWV, the proposed gold standard of arterial stiffness.The AASI correlated univariately with both PWV and the AIx in individuals overall (r = 0.28 for PWV and r = 0.24 for AIx; both P < 0.001) and in those with untreated or treated hypertension. Adjustment for age in the current study negated entirely the positive correlation between the AASI, PWV and AIx. Additional adjustment for confounders did not significantly alter these nonsignificant relationships. Furthermore, the 95% prediction limits for the AASI to predict PWV were +/- 4.18 m/s and for the AASI to predict AIx were +/- 25.4%, suggesting that the methods would not be interchangeable in a clinical setting. Direct comparative studies would be required to establish the relative predictive strength of each measure and whether combining measures can provide additional risk prediction. Until such data become available, we propose that the measures should not be considered interchangeable." @default.
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- W2000467089 date "2008-03-01" @default.
- W2000467089 modified "2023-10-07" @default.
- W2000467089 title "Ambulatory arterial stiffness index, pulse wave velocity and augmentation index – interchangeable or mutually exclusive measures?" @default.
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- W2000467089 doi "https://doi.org/10.1097/hjh.0b013e3282f35265" @default.
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