Abstract
Background
The loss of the viscoelastic properties of central arteries independently of blood pressure loads could stimulate the development of left ventricular hypertrophy and dysfunction, renal failure, or cerebral vascular injury.
Objective
The aim of the present study is to determine if an elevated systolic aortic pressure is a marker of more frequent target organ damage (TOD) in hypertensive low cardiovascular risk (CVR) patients.
Methods
Hypertensive non treated consecutive patients (p) assisted at first visit in a specialized center with a CVR according to WHO Americas B area score less than 10 % were included. Left ventricular mass index (LVMI) and tissue Doppler diastolic and systolic function were measured as Lang et al. (J Am Soc Echocardiogr 18:1440–1463, 2005) and Nagueh et al. (J Am Soc Echocardiogr 22:107–133, 2009). Cardiac TOD was considered according to 2013 European Society of Hypertension/European Society of Cardiology. Glomerular filtration rate (GFR) was calculated by MDRD formula, a value <60 ml/min/1.73 m2 was considered TOD. Systolic aortic pressured (CAoP) was measured by radial tonometry and classified according to criteria proposed by Herbert et al. (Eur Heart J 35:3100–3132, 2014). Continue variables are reported as means with standard deviation and discrete variables as absolute values and percentages. Statistical analysis was performed with Students t test, significant differences were considered with a p value < 0.05
Results
155 p were included; 23 p (14.8 %) had elevated CAoP while 132 p (85.2 %) had normal CAoP. Sample mean age was 54.1 + 12.9 years; 85 p (54.8 %) were males. Dyslipidemia was detected in 44 p (28.4 %), and 18 p (11.6 %) were smokers. Mean blood pressure was 143.7 + 17.1 mmHg/86.4 + 12.3 mmHg in p with normal (n) CAoP and 140.3 + 12 mmHg/81.9 + 6.8 mmHg in p with CAoP elevated e (p = NS). Mean CAoP in p with normal values was 117.4 + 10.9 mmHg and 116.9 + 10.7 in p with elevated values (p = NS). The average s wave was 7.42 + 1 cm/sec in n CAoP p vs 6.6 + 1 cm/sec in e CAoP p (p < 0.05) while and E/e′ ratio >13 was detected in 14.4 % n CAoP p vs 8.7 % e CAoP p (p = NS). Mean GFR was 105.4 + 40.5 ml/min/1.73 m2 in n CAoP p vs 103.9 + 45.6 ml/min/1.73 m2 in e CAoP p (p = NS) and GFR <60 ml/min/1.73 m2 was present in 4.5 % n CAoP p vs 26.1 % e CAoP p (p < 0.0125).
Conclusions
At the same level of CVR according to WHO Americas B score patients with elevated CAoP had lower longitudinal left ventricular systolic function and renal function was more deteriorated.
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Piskorz, D., Bongarzoni, L., Citta, L. et al. Functional Organ Damage in Cardiovascular Low Risk Patients with High Central Aortic Pressure. High Blood Press Cardiovasc Prev 22, 281–287 (2015). https://doi.org/10.1007/s40292-015-0105-4
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DOI: https://doi.org/10.1007/s40292-015-0105-4