Volume 14, Issue 9 pp. 1008-1015

Effect of deep brain stimulation of the posterior hypothalamic area on the cardiovascular system in chronic cluster headache patients

P. Cortelli

P. Cortelli

Department of Neurological Sciences, University of Bologna, Bologna, Italy

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P. Guaraldi

P. Guaraldi

Department of Neurosciences, University of Modena and Reggio Emilia, Modena, Italy;

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M. Leone

M. Leone

Headache Unit, Carlo Besta Neurological Institute, Milan, Italy

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G. Pierangeli

G. Pierangeli

Department of Neurological Sciences, University of Bologna, Bologna, Italy

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G. Barletta

G. Barletta

Department of Neurological Sciences, University of Bologna, Bologna, Italy

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D. Grimaldi

D. Grimaldi

Department of Neurological Sciences, University of Bologna, Bologna, Italy

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S. Cevoli

S. Cevoli

Department of Neurological Sciences, University of Bologna, Bologna, Italy

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G. Bussone

G. Bussone

Headache Unit, Carlo Besta Neurological Institute, Milan, Italy

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A. Baruzzi

A. Baruzzi

Department of Neurological Sciences, University of Bologna, Bologna, Italy

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P. Montagna

P. Montagna

Department of Neurological Sciences, University of Bologna, Bologna, Italy

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First published: 20 August 2007
Citations: 59
Pietro Cortelli, MD, PhD, Alma Mater Studiorum, Dipartimento di Scienze Neurologiche, Universita'di Bologna, Via Ugo Foscolo, 7, 40123 Bologna, Italy (tel.: +39 051 209 2929; fax: +39 051 209 2958; e-mail: [email protected]).

Abstract

The objective of this study was to determine the cardiovascular effects of chronic stimulation of the posterior hypothalamic area (PHA) in cluster headache (CH) patients. Systolic and diastolic blood pressure (SBP, DBP), cardiac output, total peripheral resistance (TPR), heart rate (HR) and breathing were monitored at supine rest and during head-up tilt test (HUTT), Valsalva manoeuvre, deep breathing, cold face test and isometric handgrip in eight drug-resistant chronic CH patients who underwent monolateral electrode implantation in the PHA for therapeutic purposes. Autoregressive power spectral analysis (PSA) of HR variability (HRV) was calculated at rest and during HUTT. Each subject was studied before surgery (condition A) and after chronic deep brain stimulation (DBS) of PHA (condition B). Baseline SBP, DBP, HR and cardiovascular reflexes were normal and similar in both conditions. With respect to condition A, DBP, TPR and the LF/HF obtained from the PSA of HRV were significantly (P < 0.05) increased during HUTT in condition B. In conclusion, chronic DBS of the PHA in chronic CH patients is associated with an enhanced sympathoexcitatory drive on the cardiovascular system during HUTT.

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