Quantitative spectral analysis of vigilance EEG in patients with obstructive sleep apnoea syndrome: EEG mapping in OSAS patients
| Autor: | Konstantinos I. Gourgoulianis, Dimitra N. Anagnostopoulou, Apostolia Hatziefthimiou, Georgios M. Hadjigeorgiou, Nikiforos V Angelopoulos, Athanasios Xiromeritis |
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| Rok vydání: | 2009 |
| Předmět: |
Adult
Male medicine.medical_specialty Neurology medicine.medical_treatment media_common.quotation_subject Positive pressure Neurological disorder Polysomnography Disorders of Excessive Somnolence Electroencephalography Young Adult stomatognathic system medicine Humans Continuous positive airway pressure media_common Aged Cerebral Cortex Sleep disorder Brain Mapping Sleep Apnea Obstructive medicine.diagnostic_test Continuous Positive Airway Pressure Fourier Analysis business.industry Signal Processing Computer-Assisted Middle Aged medicine.disease Brain Waves nervous system diseases respiratory tract diseases Otorhinolaryngology Anesthesia Female Neurology (clinical) business Vigilance (psychology) Follow-Up Studies |
| Zdroj: | Sleepbreathing = SchlafAtmung. 15(1) |
| ISSN: | 1522-1709 |
| Popis: | Sleep disruption and blood gas abnormalities, observed in patients with obstructive sleep apnoea (OSA) syndrome, prevent sleep-related restorative processes and induce chemical or structural central nervous system cellular injury. The aim of the study was to determine electroencephalogram (EEG) alterations related to the severity of OSA in patients with OSAS and the effect of the nasal continuous positive air pressure (nCPAP) treatment. Polysomnography and vigilant EEGs were performed in subjects with possible OSA. The mean relative power was calculated for delta, theta, alpha and beta frequency bands. Thirty subjects without and 131 with OSA participated in this study. In 29 male patients with severe OSA, quantitative EEGs were re-evaluated after 6 months of CPAP treatment. Compared to subjects without OSA, patients with severe OSA showed an increase in relative theta and delta power (occipital, temporal and parietal areas). Six months of nCPAP treatment improved daytime sleepiness of OSA patients. EEG demonstrated a decrease in alpha (frontal, central and temporal areas) and theta (frontal areas) relative power. However, beta relative power was increased mainly in central, and delta relative power, in all brain areas. In conclusion, EEG slowing was observed in OSA patients. CPAP treatment improved daytime sleepiness of OSA patients in contrast to the alterations in alpha (decreased) and delta (increased) relative power suggesting a possible persistent brain dysfunction. |
| Databáze: | OpenAIRE |
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