MAJOR AIRWAY COLLAPSIBILITY IN THE PATHOGENESIS OF OBSTRUCTIVE EMPHYSEMA
نویسندگان
چکیده
منابع مشابه
The influence of episodic hypoxia on upper airway collapsibility in subjects with obstructive sleep apnea.
We have previously shown that in subjects with obstructive sleep apnea, repetitive hypoxia is associated with long-term facilitation as manifested by decreased upper airway resistance (Rua). Our objective was to study the influence of long-term facilitation on upper airway collapsibility as measured by the critical closing pressure (Pcrit) model and to determine whether changes in Rua correlate...
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Oral appliance therapy is emerging as an alternative to continuous positive airway pressure for the treatment of obstructive sleep apnea (OSA). However, its precise mechanisms of action are yet to be defined. We examined the effect of a mandibular advancement splint (MAS) on upper airway collapsibility during sleep in OSA. Ten patients with proven OSA had a custom-made MAS incrementally adjuste...
متن کاملIncreased upper airway collapsibility in children with obstructive sleep apnea during wakefulness.
Upper airway collapsibility (UAC) is increased in children with sleep-disordered breathing (SDB), but during wakefulness, active neural processes preserve upper airway patency, such that measurement of upper airway dynamics using acoustic pharyngometry may contribute to diagnostic accuracy in snoring children. Upper airway cross-sectional area obtained from acoustic pharyngometry measurements w...
متن کاملRespiratory control stability and upper airway collapsibility in men and women with obstructive sleep apnea.
Obstructive sleep apnea (OSA) is two to three times more common in men as in women. The mechanisms leading to this difference are currently unclear but could include gender differences in respiratory stability [loop gain (LG)] or upper airway collapsibility [pharyngeal critical closing pressure (Pcrit)]. The aim of this study was to compare LG and Pcrit between men and women with OSA to determi...
متن کاملUpper airway collapsibility evaluated by a negative expiratory pressure test in severe obstructive sleep apnea
OBJECTIVES To investigate the usefulness of measuring upper airway collapsibility with a negative expiratory pressure application as a screening test for severe obstructive sleep apnea (OSA). INTRODUCTION OSA is a risk factor for cardiovascular disease, and it may have serious consequences. Its recognition may have important implications during the perioperative period. Increased upper airway...
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ژورنال
عنوان ژورنال: The Journal of Thoracic and Cardiovascular Surgery
سال: 1963
ISSN: 0022-5223
DOI: 10.1016/s0022-5223(19)33628-1