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Baroreflex sensitivity is impaired in essential hypertensives with central obesity

Journal of Human Hypertension volume 21, pages 473–478 (2007)Cite this article

Abstract

Recently, much interest has focussed on the potential interaction between sympathetic nervous system and global cardiovascular risk. We investigated how baroreflex sensitivity (BRS), an index of autonomic function, interacts with central obesity (CO) in an essential hypertensive (EH) population. We selected 170 EHs and 43 normotensives (NT), (median age 47.3±11.3 and 49.1±13 years, respectively). Anthropometric parameters were measured for each and BRS was evaluated by a non-invasive method using Portapres TNO. The BRS evaluation was made using the sequences method. Systolic blood pressure (SBP) and heart rate were significantly higher in EH (P<0.001 and P=0.007, respectively). BRS was significantly greater in NT (P=0.02), and was associated inversely with waist circumference (WC) (P=0.005), but not with SBP or with other metabolic risk factors. Body mass index, total and high-density lipoprotein cholesterol, age and WC were not significantly different between the two groups. These results were confirmed by age pounded analysis. Finally, a separate analysis of the hypertensive group with CO (n=84) demonstrated a significantly lower BRS compared with the other hypertensive patients (n=86) (P<0.001). BRS is associated with WC but not with arterial pressure values and metabolic risk factors. Hypertensive subjects with CO show an impairment of BRS. Owing to its association with abdominal fat distribution and subsequently insulin resistance, BRS could represent a further and reliable index for evaluation of global cardiovascular risk in hypertensive patients.

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Authors and Affiliations

  1. Department of Medicine and Experimental Oncology, Hypertension Unit, University of Turin, Molinette Hospital, Turin, Italy

    S Del Colle, A Milan, M Caserta, A Dematteis, D Naso, P Mulatero, F Rabbia & F Veglio

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  1. S Del Colle
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  2. A Milan
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  3. M Caserta
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  4. A Dematteis
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  5. D Naso
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  6. P Mulatero
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  7. F Rabbia
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  8. F Veglio
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Correspondence to S Del Colle.

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Del Colle, S., Milan, A., Caserta, M. et al. Baroreflex sensitivity is impaired in essential hypertensives with central obesity. J Hum Hypertens 21, 473–478 (2007). https://doi.org/10.1038/sj.jhh.1002163

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  • DOI: https://doi.org/10.1038/sj.jhh.1002163

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