Active clinical trials for "Sleep Apnea Syndromes"

Heated humidification in CPAP therapy is often not enough to prevent side effects like dryness of nasal mucosa and xerostomia, especially in cases of mouth breathing or mask leakage. Additionally a higher level of humidification in lower ambient room temperature can lead to condensation and irritating noises. Compliance of affected patients decreases considerably. Regarding this, devices with humidifier and additional heated tubing are developed to automatically regulate optimal humidification and temperature right up to the mask. The efficacy of a system with controlled heated humidification and heated tubing in nasal masks under various conditions like leakage and different pressure levels is object of this study.

The overall goal of this study is to determine the efficacy of a lifestyle intervention, consisting of a weight loss diet and exercise on sleep apnea in older adults. The investigators will conduct a 3-month intervention in men and women who are sedentary with suspected sleep apnea. The investigators hypothesize that the intervention will lead to marked improvements in sleep apnea severity and cardiovascular risk markers.

Obstructive sleep apnea affects approximately 2-4% of middle-aged adults in the general population and is associated with several medical conditions including hypertension and coronary artery. Research over the last decade has shown that obstructive sleep apnea may also increase the propensity for insulin resistance, glucose intolerance, and type 2 diabetes mellitus. Positive airway pressure (PAP) is the first line therapy for the treatment of obstructive sleep apnea. While PAP therapy has several favorable effects such as improvements in daytime sleepiness and quality of life, it is not clear whether using PAP therapy can alter metabolic risk. The overall objective of this study is to examine whether treatment of obstructive sleep apnea with positive airway pressure therapy improves glucose tolerance and insulin sensitivity. The primary hypothesis of this study is that PAP therapy of obstructive sleep apnea will improve in insulin sensitivity and glucose metabolism.

The Study is a multi-center, prospective, open label, single-arm, three-month, long-term study of the Attune Sleep Apnea System for the treatment of obstructive sleep apnea (OSA). The objective of the study is to monitor long-term use of the Attune Sleep Apnea System.

This study aims at quantifying the performance of kinesthetic stimulation to reduce the burden of obstructive sleep apneas and hypopneas.

Obstructive sleep apnea (OSA) is associated with impaired stroke recovery. Treatment with continuous positive airway pressure (CPAP) may prevent this but is limited by poor adherence. In this study, the investigators enrolled eligible stroke patients undergoing inpatient rehabilitation (IPR) into an intensive CPAP adherence protocol (iCAP) with an aim to increase tolerance and adherence to auto-titrating CPAP (APAP).

Given the large numbers of children who undergo tonsillectomy (by the time a child is 15 years old, 13% of his/her peers will have had a tonsillectomy), the significant morbidity, and direct and indirect costs associated with absences for child from school or parent from work or other responsibilities, it is vitally important to identify surgical techniques which will minimize pain and serious negative outcomes. This study aims to compare a new surgical technique, PEAK® Surgery System, with electrocautery, one of the most commonly used methods for tonsillectomy with or without adenoidectomy in children 3 to 6 years old with a diagnosis of sleep-disordered breathing. In this project, the investigator will evaluate intra-operative outcomes including, surgery time and bleeding rates, and post-operative pain scores, bleeding rates, time to resumption of normal diet and activity, analgesic type and use, and frequency of emergent visits over 14 days following surgery. The hypothesis is that there is no difference in outcomes between the traditional extracapsular electrocautery dissection method of tonsillectomy versus the newly introduced Peak® Surgery System. The long-term goal is to minimize pain and risk of bleeding and shorten the time to resumption of normal eating and activities in children undergoing tonsillectomy.

To study the frequency of obstructive sleep apnea (OSA) and continuous positive airway pressure (CPAP) treatment response in patients with non-alcoholic fatty liver disease (NAFLD). It is hypothesized that CPAP treatment may improve the activities of NAFLD in those with concomitant OSA. A screening study for OSA followed by a randomized controlled trial of patients with biopsy proven NAFLD being followed up at the hepatology clinic. Home sleep study, Epworth sleepiness score (ESS), paired proton magnetic resonance spectroscopy (MRS), transient elastography by fibroscan, serum cytokeratin-18 fragment, liver function tests and liver biopsy (only for those with fibroscan evidence of advanced liver fibrosis). Patients with confirmed symptomatic OSA will be randomized to receive auto CPAP or subtherapeutic CPAP as control over 6 months. Primary outcome: changes in intrahepatic triglyceride content (IHTG) measured by proton-MRS after 6 months of auto CPAP versus subtherapeutic CPAP.

The investigators hypothesis is that upper airway collapsibility (Pcrit) in patients with obstructive sleep apnea (OSA) can be measured using equipment found in the clinical sleep laboratory and these Pcrit measurements obtained using clinical sleep laboratory equipment is comparable to those obtained using research equipment. OSA is a common disease characterized by repetitive collapse of the upper airway during sleep, leading to hypoxemia and arousals, and which has important neurocognitive and cardiovascular consequences. The single most important factor in the development of OSA is upper airway collapsibility: those with a more collapsible upper airway tend to have OSA while those with a stiffer upper airway do not. The gold standard treatment for OSA is continuous positive airway pressure (CPAP), which acts by stenting open the collapsible airway. Upper airway collapsibility can be measured during sleep by changing the CPAP level and assessing the change in inspiratory flow through the upper airway. Although technically feasible, these measurements are typically only undertaken in research laboratories with specialized equipment. The purpose of this study is to measure upper airway collapsibility using clinically available (i.e. equipment found in a clinical sleep laboratory) equipment only. If successful, upper airway collapsibility could be routinely measured in clinical practice, which could help inform treatment decisions and help individualize therapy for OSA.

Obstructive sleep apnea (OSA) is a prevalent disorders characterized by intermittent obstructions of the upper airway during sleep. Continuous Positive Airway Pressure (CPAP) has been shown to be the most efficacious treatment for OSA. It consists of a small device that provides positive airway pressure delivered by a mask attached to the patients nose/mouth.