P3.20 CLINICAL SIGNIFICANCE OF AMBULATORY ARTERIAL STIFFNESS INDEX (AASI) IN YOUNG STAGE 1 HYPERTENSIVE’ S
- DOI
- 10.1016/j.artres.2013.10.107How to use a DOI?
- Abstract
Objective: The aim of the study was to examine the relationship between AASI and age in a cohort of stage I hypertensives < 50 years of age and to investigate its predictive capacity for future established hypertension.
Methods: We studied 1157 subjects from the HARVEST study (mean follow-up 5.9 years). AASI and 24-h pulse pressure (PP) were calculated from 24-h ambulatory recordings. The predictive value of AASI for incident hypertension was evaluated with Cox regression analysis adjusting for age, sex, mean 24-h blood pressure (BP).
Results: Baseline office BP was 145.5±10.4/93.6±5.6 mmHg, 24-h PP was 49.6±11.2 mmHg, AASI was 0.56±0.2. AASI was correlated with 24-h PP (r=0.41, p<0.0001), and showed a U-shaped correlation with age. In our population age was inversely correlated with 24-h PP (r=−0.32, p<0.0001). The highest sex-adjusted AASI values were found in the two bottom and the top age deciles (mean±SEM, 0.62±0.02, 0.61±0.02, and 0.60±0.02, respectively). During follow-up 55.7% of the subjects developed established hypertension needing pharmacological treatment. In a multivariate Cox analysis, AASI showed a negative predictive value for the development of future hypertension (p<0.001). Participants in the middle AASI tertile (H.R. and 95%CI: 0.81, 0.67–0.97, p=0.03) and top tertile (0.71, 0.57–0.87, p=0.001) had a lower risk of developing hypertension compared to subjects in the bottom tertile.
Conclusions: AASI shows a U-shaped relationship with age in a population of young-to-middle-age hypertensives and it may be even a predictor of better outcome. So, the clinical significance of AASI in hypertension appears to be heavily dependent on age.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - JOUR AU - F. Saladini AU - E. Benetti AU - C. Fania AU - L. Mos AU - P. Ballerini AU - E. Cozzutti AU - G. Garavelli AU - S. Cozzio AU - E. Casiglia AU - P. Palatini PY - 2013 DA - 2013/11/11 TI - P3.20 CLINICAL SIGNIFICANCE OF AMBULATORY ARTERIAL STIFFNESS INDEX (AASI) IN YOUNG STAGE 1 HYPERTENSIVE’ S JO - Artery Research SP - 131 EP - 132 VL - 7 IS - 3-4 SN - 1876-4401 UR - https://doi.org/10.1016/j.artres.2013.10.107 DO - 10.1016/j.artres.2013.10.107 ID - Saladini2013 ER -