Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/58372
Citations | ||
Scopus | Web of ScienceĀ® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Obstructive sleep apnea and pulmonary hypertension |
Author: | Sajkov, D. McEvoy, R. |
Citation: | Progress in Cardiovascular Diseases, 2009; 51(5):363-370 |
Publisher: | W B Saunders Co |
Issue Date: | 2009 |
ISSN: | 0033-0620 1873-1740 |
Statement of Responsibility: | Dimitar Sajkov and R. Doug McEvoy |
Abstract: | Obstructive sleep apnea (OSA) is associated with repetitive nocturnal arterial oxygen desaturation and hypercapnia, large intrathoracic negative pressure swings, and acute increases in pulmonary artery pressure. Rodents when exposed to brief, intermittent hypoxia for several hours per day to mimic OSA developed pulmonary vascular remodeling and sustained pulmonary hypertension and right ventricular hypertrophy within a few weeks. Until recently, however, it was unclear whether episodic nocturnal hypoxemia associated with OSA was sufficient to cause similar changes in humans. This controversy appears to have been resolved by several recent studies that have shown (a) pulmonary hypertension in 20% to 40% of patients with OSA in the absence of other known cardiopulmonary disorders and (b) reductions in pulmonary artery pressure in patients with OSA after nocturnal continuous positive airway pressure (CPAP) treatment. The pulmonary hypertension associated with OSA appears to be mild and may be due to a combination of precapillary and postcapillary factors including pulmonary arteriolar remodeling and hyperreactivity to hypoxia and left ventricular diastolic dysfunction and left atrial enlargement. Although measurable changes in the structure and function of the right ventricle have been reported in association with OSA, the clinical significance of these changes is uncertain. Right ventricular failure in OSA appears to be uncommon and is more likely if there is coexisting left-sided heart disease or chronic hypoxic respiratory disease. |
Keywords: | Animals Humans Hypertension, Pulmonary Sleep Apnea, Obstructive Disease Models, Animal Chronic Disease Treatment Outcome Continuous Positive Airway Pressure Sleep Blood Pressure Pulmonary Circulation Ventricular Function, Right Hemodynamics Hypoxia |
Rights: | Crown Copyright 2009 Published by Elsevier Inc. All rights reserved |
DOI: | 10.1016/j.pcad.2008.06.001 |
Published version: | http://dx.doi.org/10.1016/j.pcad.2008.06.001 |
Appears in Collections: | Aurora harvest Molecular and Biomedical Science publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.