Browsing by Author "Sverrisdottir, Yrsa B."

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Dorsal root ganglion stimulation: a new target for autonomic neuromodulation?
(2021) Sverrisdottir, Yrsa B.
Abstract: Dysautonomias are typifed by aberrant output of either the sympathetic or parasympathetic nervous system resulting in an array of manifestations across multiple body systems. Neuromodulation of the autonomic nervous system (ANS) has demonstrated the potential to relieve the symptoms of a range of disorders which have either a primary or secondary dysautonomic component.
Human Dorsal Root Ganglion Stimulation Reduces Sympathetic Outflow and Long-Term Blood Pressure
(2020) Sverrisdottir, Yrsa B.
Summary: This study hypothesized that dorsal root ganglion (DRG) stimulation would reduce sympathetic nerve activity and would alter hemodynamic variables. This study directly recorded muscle sympathetic nerve activity during ON and OFF stimulation of the DRG while measuring hemodynamic parameters. DRG stimulation significantly reduced the firing frequency of sympathetic nerves, as well as significantly reducing blood pressure, with greater reductions evident when stimulation was left-sided. Left-sided DRG stimulation lowers sympathetic nerve activity, leading to long-term phenotypic changes. This raises the potential of DRG stimulation being used to treat de novo autonomic disorders such as hypertension or heart failure. (J Am Coll Cardiol Basic Trans Science 2020;5:973–85) © 2020 The Authors. Published by Elsevier on behalf of the American College of Cardiology Foundation.