Linked Life Data

12609010

Source:http://linkedlifedata.com/resource/pubmed/id/12609010

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2003-2-28
pubmed:abstractText
The mechanisms underlying the link between obstructive sleep apnoea (OSA) and cardiovascular disease are not completely established. However, there is increasing evidence that autonomic mechanisms are implicated. A number of studies have consistently shown that patients with OSA have high levels of sympathetic nerve traffic. During sleep, repetitive episodes of hypoxia, hypercapnia and obstructive apnoea act through chemoreceptor reflexes and other mechanisms to increase sympathetic drive. Remarkably, the high sympathetic drive is present even during daytime wakefulness when subjects are breathing normally and no evidence of hypoxia or chemoreflex activation is apparent. Several neural and humoral mechanisms may contribute to maintenance of higher sympathetic activity and blood pressure. These mechanisms include chemoreflex and baroreflex dysfunction, altered cardiovascular variability, vasoconstrictor effects of nocturnal endothelin release and endothelial dysfunction. Long-term continuous positive airway pressure treatment decreases muscle sympathetic nerve activity in OSA patients. The vast majority of OSA patients remain undiagnosed. Unrecognized OSA may contribute, in part, to the metabolic and cardiovascular derangements that are thought to be linked to obesity, and to the association between obesity and cardiovascular risk. Furthermore, acting through sympathetic neural mechanisms, OSA may contribute to or augment elevated levels of blood pressure in a large proportion of the hypertensive patient population.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0001-6772
pubmed:author
pubmed:issnType
Print
pubmed:volume
177
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
385-90
pubmed:dateRevised
2005-11-16
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Sympathetic nerve activity in obstructive sleep apnoea.
pubmed:affiliation
Department of Hypertension and Diabetology, Medical University of Gda?sk, Debinki, Poland.
pubmed:publicationType
Journal Article, Review