Obstructive Sleep Apnea (OSA) is commonly associated with factors that increase cardiovascular risk, including Metabolic Syndrome (MS). There is a lack of well-controlled clinical studies investigating the independent effects of OSA in the development of cardiovascular disease, especially evaluating jointly mechanisms involved in these disorders such as inflammatory response, oxidative stress and vascular changes. The investigators hypothesized that in the absence of MetS, the mechanisms involved on cardiovascular consequences in OSA patients would be less important. The purpose of this study is to analyze the effects of OSA in the absence of MS, on inflammatory, oxidative stress and vascular markers; to verify the influence of excessive daytime sleepiness (EDS) on the same parameters; and additionally verify the effects of nasal continuous positive airway pressure (nCPAP)in theses parameters.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
34
CPAP pressure is individually prescript according to polysomnography for CPAP titration
Associação Fundo de Incentivo à Pesquisa
São Paulo, São Paulo, Brazil
Inflammatory marker (high sensitive C-reactive protein)
Time frame: 3 months
Oxidative stress marker (homocysteine, cysteine and paraoxonase-1 activity)
Time frame: 3 months
Arterial stiffness (pulse wave velocity)
Time frame: 3 months
Angiotensin converting enzyme activity
Time frame: 3 months
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