Continuous positive airway pressure treatment improves baroreflex control of heart rate during sleep in severe obstructive sleep apnea syndrome (Articolo in rivista)

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  • Continuous positive airway pressure treatment improves baroreflex control of heart rate during sleep in severe obstructive sleep apnea syndrome (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Bonsignore MR; Parati G; Insalaco G; Marrone O; Castiglioni P; Romano S; Di Rienzo M; Mancia G; Bonsignore G. (2002)
    Continuous positive airway pressure treatment improves baroreflex control of heart rate during sleep in severe obstructive sleep apnea syndrome
    in American journal of respiratory and critical care medicine
    (literal)
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  • Bonsignore MR; Parati G; Insalaco G; Marrone O; Castiglioni P; Romano S; Di Rienzo M; Mancia G; Bonsignore G. (literal)
Pagina inizio
  • 279 (literal)
Pagina fine
  • 286 (literal)
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  • 166 (literal)
Rivista
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  • Impact Factor: 5.956 (literal)
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  • I soggetti con apnee ostruttive durante il sonno rappresentano una popolazione ad elevato rischio cardiovascolare e spesso presentano una disfunzione del controllo di questo sistema. I risultati dello studio condotto, hanno evidenziato come nei soggetti con sindrome dell'apnea ostruttiva nel sonno la disfunzione del controllo della funzione cardiovascolare dei barocettori arteriosi è anche dipendente dall'ipossia intermittente e che questa disfunzione è reversibile con il trattamento delle apnee notturne. (literal)
Note
  • PubMe (literal)
  • ISI Web of Science (WOS) (literal)
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  • MR Bonsignore - Università degli Studi di Palermo, Istituto di Malttie dell'Apparato Respiratorio; G Parati - Clinica Medica 1, Milano-Bicocca University, Istituto Auxologico Italiano; P Castiglioni - Centro di Bioingegneria, Fondazione Don Carlo Gnocchi ONLUS, Milano and Politecnico di Milano, Milan; M Di Rienzo - Centro di Bioingegneria, Fondazione Don Carlo Gnocchi ONLUS, Milano and Politecnico di Milano, Milan; G Mancia - Clinica Medica, Milano University, Ospedale San Gerardo, Monza. (literal)
Titolo
  • Continuous positive airway pressure treatment improves baroreflex control of heart rate during sleep in severe obstructive sleep apnea syndrome (literal)
Abstract
  • The role of the arterial baroreflex in the cardiovascular changes associated with the obstructive sleep apnea syndrome (OSAS), and the effect of nasal continuous positive airway pressure (CPAP)treatment on baroreflex function during sleep are unknown. Baroreflex control of heart rate was studied in 29 normotensive patients with OSAS under no treatment, in 11 age-matched control subjects, and in 10 patients at CPAP withdrawal after 5.5 +/- 3.7 (range 3–14) months of treatment. Baroreflex control of heart rate was assessed by “sequence method” analysis of continuous blood pressure recordings (Finapres) obtained during nocturnal polysomnography. In untreated OSAS, baroreflex sensitivity (BRS)was low during wakefulness and non–rapid eye movement (REM)stage 2 sleep compared with control subjects, and correlated inversely with mean lowest SaO2 and the blood pressure increase after apneas. After CPAP treatment, the apnea-hypopnea index was lower, and mean lowest SaO2 higher than before treatment. After CPAP, patients were more bradycardic, blood pressure and its standard deviation decreased as SaO2 improved in non-REM stage 2 sleep, and BRS increased (nocturnal wakefulness: + 59%; non-REM stage 2 sleep: + 68% over pretreatment values). Our data suggest that baroreflex dysfunction in OSAS may be at least partly accounted for by nocturnal intermittent hypoxemia, and can be reversed by long-term CPAP treatment. (literal)
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