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Blood pressure response to renal nerve stimulation in patients undergoing renal denervation: a feasibility study

Journal of Human Hypertension volume 29, pages 292–295 (2015)Cite this article

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Abstract

During renal sympathetic denervation (RDN), no mapping of renal nerves is performed and there is no clear end point of RDN. We hypothesized high-frequency renal nerve stimulation (RNS) may increase blood pressure (BP), and this increase is significantly blunted after RDN. The aim of this study was to determine the feasibility of RNS in patients undergoing RDN. Eight patients with resistant hypertension undergoing RDN were included. A quadripolar catheter was positioned at four different sites in either renal artery. RNS was performed during 1 min with a pacing frequency of 20 Hz. After all patients successfully underwent RDN, RNS was repeated at the site of maximum BP response before RDN in either renal artery. Mean age was 66 years. During RNS, BP increased significantly from 108/55 to 132/68 mm Hg (P<0.001). After RDN, systolic BP response at the site of maximum response to RNS was significantly blunted (+43.1 vs +9.3 mm Hg, P=0.002). In three patients, a systolic BP increase >10 mm Hg was observed after RDN. In conclusion, RNS resulted in an acute temporary BP increase. This response was significantly blunted after RDN. RNS may potentially serve as an end point for RDN.

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Acknowledgements

We thank Vera Derks for excellent editorial assistance.

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Authors and Affiliations

  1. Department of Cardiology, Isala Klinieken, Zwolle, The Netherlands

    P Gal, M R de Jong, J J J Smit, A Adiyaman & A Elvan

  2. KU Leuven Department of Cardiovascular Sciences, The Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, University of Leuven, Leuven, Belgium,

    J A Staessen

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  1. P Gal
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Correspondence to A Elvan.

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Gal, P., de Jong, M., Smit, J. et al. Blood pressure response to renal nerve stimulation in patients undergoing renal denervation: a feasibility study. J Hum Hypertens 29, 292–295 (2015). https://doi.org/10.1038/jhh.2014.91

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