Neurophysiological study of the subthalamic nucleus deep brain stimulation effect on the function of autonomic nervous system in patients with Parkinson's disease
Abstract
Purpose: To assess the impact of subthalamic nucleus (STN) deep brain stimulation (DBS) on the autonomic nervous system function in patients with advanced Parkinson’s disease (PD). Material- Methods: Twenty-four patients with idiopathic PD (mean age±SD, 62.1±9.4 years old) were examined 3 days before and 6 months after DBS, “on medication” state both times. Each examination session included registration of autonomic symptoms by means of a semi-structural questionnaire, blood pressure (BP) recording at supine position and at the first and third minute after sudden change from supine to standing position and a neurophysiological assessment. The neurophysiological examination included: a. recording of sympathetic skin response (SSR) from both palms and a sole, b. time domain analysis of RR interval variation during normal and deep breathing, during Valsalva manoeuvre and during tilt test. By off-line performed frequency domain analysis of heart rate variation the Total Power, the Low Freq ...
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