View clinical trials related to Sleep Apnea, Obstructive.
Filter by:A pharmacological, non-mechanical therapy for OSA that is efficacious and tolerable remains elusive. Here the investigators study the effect on sleep apnea severity of a combination of pharmacological agents (atomoxetine and oxybutynin, "AtoOxy") over a 1 month period of time. The current study will answer the following questions: Does ongoing, repeated-dose administration of atomoxetine-plus-oxybutynin (referred to as "AtoOxy") improve OSA severity, and do patients exhibit signs of symptomatic relief? Most importantly, which phenotypic subgroup of patients preferentially benefit from this intervention?
The purpose of this study is to evaluate whether biomarkers of lung injury and remodeling are responsive to effective continuous positive airway pressure (CPAP) treatment in adults with idiopathic pulmonary fibrosis (IPF) and moderate-to-severe obstructive sleep apnea (OSA).
Obstructive sleep apnoea (OSA) is associated with a variety of important complications, namely cardiovascular, neurocognitive and metabolic disturbances. The prevalence of OSA is well studied in children and adults. However, adolescence - an interface between childhood and adulthood, and a period of developmental changes known to affect sleep is largely unexplored in relation to OSA. The only published prevalence study on adolescents is limited by its small sample size, not a true representation of the general population and primarily focused on Caucasians. In this proposal, the investigators aim to determine the prevalence of OSA, and associated clinical features in a population-based sample of adolescents aged between 12 and 16 years. The sample selection will be based on a stratified (by districts) and clustered (subjects within randomly selected schools) randomised sampling frame. Each participant will fill in a sleep habit questionnaire, undergo anthropometric measurements, physical examination and complete home polysomnographic recordings. Participants will undergo Conners' Continuous Performance Test and have blood samples taken to phenotype their cardiovascular and metabolic risk. The primary outcome is prevalence of OSA, assessed by the obstructive apnoea hypopnoea index. Secondary outcomes include use of logistic regression models to assess association between different severities of OSA and various demographic, clinical and laboratory variables. The obtained result will provide the much-needed OSA prevalence in adolescents which is essential for estimating the true burden of disease within this population. This information is also vital when considering population-based health policies and interventional strategies. Globally, the findings from currently evidence-sparse region of the world allow future international comparison of disease burden. Our study will also form a platform from which repeated measurements can be made to assess time trends and to answer the important question of whether adulthood OSA takes its origin from adolescence.
Long term, prospective study of continuous positive airway pressure treatment influence on cognitive functions in patients with obstructive sleep apnea syndrome.
This study will investigate if an intra-nasal nose spray of the drug oxytocin can decrease the amount of pressure needed from the automatic Continuous Positive Airway Pressure (CPAP) device while sleeping decreasing some of the harmful effects of low oxygen in people with sleep apnea. This study will last 35 nights and involves spending three nights in the sleep lab at George Washington University. There are no additional costs to participants and no compensation for being involved in the study.
Obstructive sleep apnea (OSA) is common and has major health implications but treatment options are limited. OSA patients show a marked reduction in upper airway (UA) dilator muscle activity at sleep onset and this phenomenon leads to increased collapsibility of UA compared to normal subjects. In this protocol the investigators will test the effect of LTM1201AZ, LTM1201AT, LTM1201AD, LTM1201AG administered before sleep on OSA phenotype traits and OSA severity during sleep.
This study will investigate the effectiveness of a simple and quick myofunctional reeducation protocol of the tongue in reducing the obstructive sleep apnea syndrome (OSAS) severity.
Continuous positive airway pressure (CPAP) is the gold standard to normalize breathing during sleep in patients with obstructive sleep apnea syndrom (OSA). Many patients will not tolerate or will not accept CPAP. Implanted nerve stimulation is a novel therapy for OSA patients that restores the upper airway potency using unilateral XII nerve electric stimulation. The principal objective of this study is short-term efficacy of a new treatment for OSA on blood pressure variability during sleep.
Sleep apnea including obstructive sleep apnea (OSA) and central sleep apnea (CSA), are common in patients with cardiovascular disease. The prevalence of OSA is 2%-4% in general population and 16%-47% in surgical-heart failure patients. The previous studies found that the sleep apnea types shifted from OSA to CSA after continuous positive airway pressure (CPAP) treatment or from CSA to OSA after heart surgery (cardiac valve replacement/ repair or heart transplantation) without the mechanism illuminated clearly. The recent studies found that the loop gain (LG) could predict the effect of upper airway surgery and CPAP treatment on the reversion of OSA. However, in patients with valvular heart disease, whether LG and related parameters can predict the therapeutic efficacy of CPAP or cardiac valve replacement is not expounded clearly. The investigators' previous study found that there were different outcomes of sleep apnea after cardiac valve replacement: elimination or consistent. But the corresponding non-anatomic mechanisms was not clear. The investigators' preliminary experiment showed that the LG and related parameters were not improved while OSA improved by CPAP treatment; however, the recovery of OSA after cardiac valve replacement was closed related to the improvement of LG and related parameters. The investigators speculated that, 1. LG and related parameters could predict OSA outcome of CPAP treatment or cardiac valve replacement. 2. non-anatomic mechanisms including LG and associated parameters, contributed to CPAP treatment and cardiac valve replacement were different. In this study, the investigators aimed to explore the relationship between LG and, outcomes of OSA and the regarding non-anatomic mechanisms in patient with heart valve disease.
The purpose of this study is to determine whether treatment of obstructive sleep apnea (OSA) with positive airway pressure starting shortly after acute ischemic stroke or high risk TIA (1) reduces recurrent stroke, acute coronary syndrome, and all-cause mortality 6 months after the event, and (2) improves stroke outcomes at 3 months in patients who experienced an ischemic stroke.