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  • Title: Prognostic significance of the brachial-ankle pulse wave velocity in patients with essential hypertension: final results of the J-TOPP study.
    Author: Munakata M, Konno S, Miura Y, Yoshinaga K, J-TOPP Study Group.
    Journal: Hypertens Res; 2012 Aug; 35(8):839-42. PubMed ID: 22534520.
    Abstract:
    Brachial-ankle pulse wave velocity (baPWV) is a new tool for measuring arterial stiffness. The prognostic significance of this measure, however, is not fully established. We initiated a multicenter cohort study to examine the prognostic significance of baPWV in patients with essential hypertension in 2002. After baseline measurements were obtained, 662 previously untreated patients (mean age 60±12 years, mean blood pressure 156±19/94±12 mm Hg, 45% men) underwent long-term follow-up according to the current hypertension treatment guidelines. During the follow-up period (mean: 3 years, range: 3 months-8 years), 24 cardiovascular events were observed. The subjects were divided into high and low baPWV groups according to the median value (1750, cm s(-1)). Patients in the high baPWV group were older and had a lower body mass index, higher blood pressure, faster heart rate and higher fasting glucose and plasma creatinine concentrations compared with those in the low baPWV group. Cardiovascular morbidities per 1000 person-years for the high and low baPWV groups were 17.48 and 6.38, respectively (P<0.05), and the 8-year cardiovascular event-free survival rates were 78.2% and 93.5%, respectively (log-rank test, P=0.01). A multivariate Cox proportional hazard analysis showed that high baPWV compared with low baPWV was associated with a significantly poorer outcome (hazard ratio (HR) 2.97; 95% CI: 1.006-9.380). In conclusion, baPWV is an independent risk factor for future cardiovascular events in patients with essential hypertension.
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