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Sleep Stage Classification Through HRV, Complexity Measures, and Heart Rate Asymmetry Using Generalized Estimating Equations Models.
Entropy (Basel)
December 2024
Institute of Physics, University of Zielona Góra, 65-069 Zielona Góra, Poland.
This study investigates whether heart rate asymmetry (HRA) parameters offer insights into sleep stages beyond those provided by conventional heart rate variability (HRV) and complexity measures. Utilizing 31 polysomnographic recordings, we focused exclusively on electrocardiogram (ECG) data, specifically the RR interval time series, to explore heart rate dynamics associated with different sleep stages. Employing both statistical techniques and machine learning models, with the Generalized Estimating Equation model as the foundational approach, we assessed the effectiveness of HRA in identifying and differentiating sleep stages and transitions.
View Article and Find Full Text PDFSubthalamic Deep Brain Stimulation under General Anaesthesia for Parkinson's Disease: Institutional Experience and Outcomes.
Stereotact Funct Neurosurg
November 2024
Neuroanesthesia Division, Anesthesiology Department, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain.
Introduction: Direct targeting in deep brain stimulation (DBS) has remarkably impacted the patient's experience throughout the surgery and the overall logistics of the procedure. When the individualised plan is co-registered with a 3D image acquired intraoperatively, the electrodes can be safely placed under general anaesthesia. How this applies to a general practice scenery (outside clinical trials and in a moderate caseload centre) has been scarcely reported.
View Article and Find Full Text PDFAwake versus asleep deep brain stimulation targeting the caudal zona incerta for essential tremor.
NPJ Parkinsons Dis
November 2024
Department of Clinical Science, Neurosciences, Umeå University, Umea, Sweden.
To compare awake and asleep deep brain stimulation (DBS) surgery for Essential Tremor (ET), we conducted this retrospective cohort study of patients consecutively operated with DBS targeting the caudal Zona incerta (cZi). 37 underwent surgery awake and 55 asleep. Tremor before surgery and on/off stimulation one year after surgery were evaluated using the Essential Tremor Rating Scale (ETRS).
View Article and Find Full Text PDFAdaptive vs. Conventional Deep Brain Stimulation: One-Year Subthalamic Recordings and Clinical Monitoring in a Patient with Parkinson's Disease.
Bioengineering (Basel)
September 2024
Parkinson Institute of Milan, ASST G.Pini-CTO, 20126 Milano, Italy.
Conventional DBS (cDBS) for Parkinson's disease uses constant, predefined stimulation parameters, while the currently available adaptive DBS (aDBS) provides the possibility of adjusting current amplitude with respect to subthalamic activity in the beta band (13-30 Hz). This preliminary study on one patient aims to describe how these two stimulation modes affect basal ganglia dynamics and, thus, behavior in the long term. We collected clinical data (UPDRS-III and -IV) and subthalamic recordings of one patient with Parkinson's disease treated for one year with aDBS, alternated with short intervals of cDBS.
View Article and Find Full Text PDFRisk factors and significance of post-operative edema in Parkinson Disease patients submitted to deep brain stimulation. A ten-year case series.
Neurol Sci
September 2024
Department of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
Background: Peri-electrode edema after deep brain stimulation (DBS) surgery for Parkinson Disease (PD) has been reported in up to 100% of cases. The clinical significance of this finding is unclear, with most papers suggesting a benign course. The risk factors are also poorly defined.
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