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      Aortic, but not brachial blood pressure category enhances the ability to identify target organ changes in normotensives.

      Journal of Hypertension
      Adolescent, Adult, Aorta, physiology, Blood Pressure, Brachial Artery, Echocardiography, Female, Glomerular Filtration Rate, Heart, Humans, Hypertension, physiopathology, Kidney, Male, Middle Aged, Young Adult

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          Abstract

          We sought to determine whether within normal/high-normal blood pressure (BP) ranges (120-139/80-89 mmHg), aortic BP may further refine BP-related cardiovascular risk assessment, as determined from target organ changes. In 1169 participants from a community sample of African ancestry, 319 (27%) of whom had a normal/high-normal BP, aortic BP was determined using radial applanation tonometry and SphygmoCor software, and target organ changes assessed from carotid-femoral pulse wave velocity (PWV) (n = 1025), estimated glomerular filtration rate (eGFR) (n = 944), and left ventricular mass indexed to height (LVMI) (n = 690). Normal versus high-normal BP categories failed to differentiate between those participants with a BP above optimal values with versus without multivariate-adjusted target organ changes. However, in those with a normal/high-normal BP with aortic SBP values that were less than 95% confidence interval of healthy participants with optimal BP values (45% of those with a normal/high-normal BP), no unadjusted or multivariate adjusted target organ changes were noted. In contrast, those with a normal/high-normal BP with aortic SBP values that exceeded optimal thresholds, demonstrated unadjusted and multivariate adjusted increases in PWV and LVMI and decreases in eGFR (P < 0.05 to P < 0.005 after multivariate adjustments). In contrast to normal versus high-normal BP categories which do not clearly distinguish normotensives with from those without organ damage, noninvasively determined aortic BP measurements may refine the ability to detect those with a normal/high-normal BP at risk of BP-related cardiovascular damage.

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