View clinical trials related to Sleep Apnea.
Filter by:In obstructive sleep apnea (OSA), the upper airway recurrently closes during sleep. The mechanisms that lead to airway closure are not completely understood. Some studies have shown that there is progressive narrowing of the pharyngeal airway across breaths during expiration (Progressive Expiratory Narrowing, PEN) preceding an obstructive apnea. The investigators will assess the viscoelastic properties of the pharyngeal airway and its role in PEN.
Fatigue is a symptom present in 76 to 92% of people with multiple sclerosis (MS). Fatigue is usually described as an overwhelming sense of tiredness, lack of energy, and feeling of exhaustion which is different from sleepiness. Fatigue is also a symptom commonly seen in people with obstructive sleep apnea (OSA). The overall objective is to develop a non-pharmacological treatment for fatigue in MS. The objective of this study is to evaluate if treatment of OSA with continuous positive airway pressure (CPAP) improves fatigue in MS subjects with OSA and fatigue. This will be a small pilot randomized, double-blind, sham-controlled clinical trial; the control group will be treated with a sham-CPAP machine and intervention group will be treated with an auto-titration CPAP machine. The primary outcome measure will be improvement (decrease) in the Modified Fatigue Impact Scale from baseline. The duration of intervention will be 12 weeks to achieve a clinical response in the treatment group. After this intervention participants in both groups will be offered a referral to the sleep clinic of their preference for formal treatment as per standard of care.
The purpose of this study is to determine whether the Optical coherence tomography (OCT) can image the structure and geometry of hollow organs of the upper airway in sleep disorder. The research can identify the obstruction sites that help the select the appropriate treatment for potential surgical candidates.
The investigators have developed a simple, accurate, and a point-of-care, computer-based clinical decision support system (CDSS) not only to detect the presence of sleep apnea but also to predict its severity. The CDSS is based on deploying an artificial neural network (ANN) derived from anthropomorphic and clinical characteristics. The investigators hypothesize that patients with severe OSA defined as AHIā„30 can be diagnosed with the use of ANN without undergoing a sleep study, and that empiric management with auto-CPAP has similar outcomes to those who undergo a formal sleep study.
This trial is enrolling patients who are already being seen at OHSU sleep disorder center or have been referred for clinical reasons by their physician to the OHSU sleep disorder center and are going to have a sleep study that would be paid for by their insurance company for clinical reasons. The purpose of this study is to determine whether the Portland sleep apnea quiz has a higher specificity and negative predictive value then the Berlin Sleep Questionnaire in a patient population with a high predisposition to sleep apnea presenting to a sleep center.
The purpose of the project is: 1. to determine the incidence of complex sleep apnea 2. to determine what percentage of cases will resolve over time with therapy with Continuous Positive Airway Pressure 3. Determine whether there is any difference in outcome, in those with persistent complex sleep apnea on CPAP, between those treated with CPAP or adaptive servo-ventilation.
The initial hypothesis is that branched-chain aminoacids (BCAA) administration could be beneficial to patients suffering from sleep apnea syndrome (SAS), the aim of the present work is to verify this hypothesis. The literature data demonstrate that a BCAA complementation improves the physical performances, protects lean mass and increases VO2 max during training. We demonstrated earlier that this complementation can cure at less partly the hypoxemia of chronic obstructive pulmonary patients by a stimulation of respiratory centres.
The investigators would like to investigate the effects of treating sleep apnea with a positive airway pressure device, either continuous (titrated) versus auto titrated on the control of blood pressure in patients with Resistant Hypertension.
Obstructive Sleep Apnea Syndrome (OSAS)is a common disease and is suspected to be associated with sexual dysfunction. Our purpose is to sudy the effect of CPAP (Continuous Positive Airway Pressure) treatment on patients' sexual dysfunction by measuring testosterone levels before and after CPAP treatments.
Oral therapy with montelukast may lead to improved polysomnographic findings in children with mild to moderate OSAS with and without allergic rhinitis who a priori require T&A for OSAS. - A significant proportion of the children with OSAS treated with montelukast will show reduced severity of OSAS, and this will obviate the need for surgical T&A.