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Cerebral hemodynamic changes in obstructive sleep apnea syndrome after continuous positive airway pressure treatment.
MedLine Citation:
PMID:  23386369     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Patients with obstructive sleep apnea syndrome (OSAS) are at increased risk for cerebrovascular diseases. The underlying mechanisms remain obscure. It may occur through a reduction in cerebral vascular reactivity. Continuous positive airway pressure (CPAP) is effective in reducing the occurrence of apneas. We hypothesized that treatment with CPAP improves cerebral vascular reactivity. METHODS: This is a prospective study with OSAS patients. The apnea test (ApT) was calculated as an increase of mean artery velocity during apnea: [Artery velocity in apnea minus Resting artery velocity]/Resting artery velocity expressed as percentage. After 2 years of CPAP treatment, the test was repeated. RESULTS: Seventy-six patients represented the study pool. After 2 years of treatment with CPAP, we were able to conduct a reassessment in 65 patients. Of the 65 patients who finished the clinical study, 56 were men, and 9 were women, with an average age of 48.1 ± 10.4 years. There was an improvement in the ApT after CPAP treatment (30.8 ± 12.1 vs 39.8 ± 15.1; p:0.000). The values of cerebral blood flow velocities, diastolic blood pressure in apnea, and basal heart rate decreased. CONCLUSIONS: Cerebral vascular reactivity in OSAS patients measured by ApT improved after 2 years of CPAP.
Authors:
Pedro Enrique Jiménez Caballero; Ramón Coloma Navarro; Oscar Ayo Martín; Tomás Segura Martín
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-2-6
Journal Detail:
Title:  Sleep & breathing = Schlaf & Atmung     Volume:  -     ISSN:  1522-1709     ISO Abbreviation:  Sleep Breath     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-2-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9804161     Medline TA:  Sleep Breath     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Neurology, Hospital San Pedro de Alcántara, Avenida de Pablo Naranjo s/n, 10003, Cáceres, Spain, pjimenez1010j@yahoo.es.
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