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  • Title: Effects of Renal Sympathetic Denervation on Arterial Stiffness and Blood Pressure Control in Resistant Hypertensive Patients: A Single Centre Prospective Study.
    Author: Baroni M, Nava S, Giupponi L, Meani P, Panzeri F, Varrenti M, Maloberti A, Soriano F, Agrati AM, Ferraro G, Colombo F, Rampoldi A, Mancia G, Colombo P, Klugmann S, Giannattasio C.
    Journal: High Blood Press Cardiovasc Prev; 2015 Dec; 22(4):411-6. PubMed ID: 26458940.
    Abstract:
    Renal denervation (RD) is an intriguing treatment strategy for resistant hypertension. However, limited data are available about its long time efficacy as well as its effects on intermediate phenotypes like arterial stiffness and carotid IMT. 12 patients (9 males, mean 69 years) with resistant hypertension underwent bilateral RDN (Medtronic System) since April 2012 in Niguarda Ca' Granda Hospital (Milan). Patients were studied before intervention, and at 1, 3, 6 and 12 months after RD. Carotid intima media thickness (Esaote Mylab) and carotid-femoral pulse wave velocity (Complior, Alam medical) were assessed at each step. Compared to baseline, patients showed a marked reduction of office systolic blood pressure at each follow-up step (p < 0.05 versus baseline for all steps) as well as pulse wave velocity (p < 0.01 at 1 year versus baseline). Moreover, reduction in pulse wave velocity was higher than the expected value obtained only considering blood pressure drop. Conversely, no significant effect was observed on diastolic blood pressure as well as carotid intima-media thickness. In our study, renal denervation was a safe and effective procedure. The BP lowering effect was maintained during follow-up and a beneficial effect on arterial stiffness was observed, which implies that this effect can't passively originate from the BP fall but rather from an improvement of arterial mechanical properties, possibly related to a reduced sympathetic arterial drive.
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