Active clinical trials for "Sleep Apnea Syndromes"

This study will test the hypothesis that the modified positive airway pressure (PAP) device for OSA will be no worse than a market released product in terms of its treatment efficacy, comfort and patient compliance. Patients will have their treatment pressure titrated using polysomnography (PSG) in the sleep laboratory, and then in a random order will spend additional time undergoing PSG using both devices, and using both devices at home for 3 weeks. Data will be collected from the PSG studies, device downloads, independent pressure-flow loggers, and custom questionnaires.

Obstructive sleep-disordered breathing (SDB) in childhood is a disorder of breathing during sleep characterized by intermittent upper airway obstruction. Snoring, labored breathing and apneas reported by the parents are the most frequent symptoms.Obstructive SDB can result from many different abnormalities including large adenoids and tonsils or obesity. Intermittent upper airway obstruction during sleep is accompanied by low oxygen or high carbon dioxide in the blood and arousals from sleep. If obstructive SDB is not treated, complications may develop such as: i) enuresis; ii) delay in somatic growth rate; iii) central nervous system morbidity (e.g. hyperactivity and learning difficulties); and iv) elevated blood pressure. Overnight polysomnography (PSG) is considered the gold-standard method for defining severity of obstructive SDB and subgroups of children with snoring who should be treated. However, PSG is a labor-intensive, time-consuming and expensive diagnostic method, which is not available in many community settings. Thus, there is an urgent need for developing easy-to-use and low-cost diagnostic methods which can be used to determine severity of obstructive SDB and define subgroups of children with snoring and large adenoids and tonsils who will benefit from adenotonsillectomy (AT). Pulse oximetry is a widely available, non-invasive method which allows continuous monitoring of oxygen transport by hemoglobin. Episodes of upper airway obstruction are frequently accompanied by reductions in the hemoglobin oxygen transport (oxygen desaturation of hemoglobin).The hypothesis of this research project is that subgroups of children with snoring and adenotonsillar hypertrophy and certain abnormalities in oxygenation detected by nocturnal pulse oximetry will benefit from AT in a community setting.

The aim of this study is to compare the effects of Adaptive Servo Ventilation (Bipap® auto SV Advanced) and oxygen therapy in chronic heart failure patients complicated with central sleep apnea.

The purpose of this study is to evaluate the relationships between prostanoids and various outcomes such as sleep disturbance, hypertension and arteriosclerosis in patients with sleep apnea syndrome(SAS). In the patients introduced to continuous positive airway pressure(CPAP) treatment, the effects of CPAP are also evaluated.

The objective of this study is to assess the feasibility, safety and effectiveness of tongue stabilization using Aspire Medical Advance™ System for the treatment of obstructive sleep apnea (OSA). Success is defined as a statistically significant reduction in AHI measured by polysomnography (PSG) from baseline to 6 months.

The purpose of this study is to evaluate the efficacy and tolerability of Continuous Positive Pressure for SAOS in Down Syndrome patients.

Context: The obstructive sleep apnea syndrome (OSAS), i.e., snoring with difficulty breathing during sleep, is common in children. Continuous positive airway pressure (CPAP) therapy is the usual treatment for children who do not improve following surgery. However, CPAP is uncomfortable and is often not tolerated. We therefore plan to study a modification of bilevel positive airway pressure therapy, BiPAP with Bi-Flex that may be more comfortable. Objectives: The primary objective of this study is to determine whether BiPAP with Bi-Flex results in improvement in adherence as compared to CPAP. The secondary objective is to determine whether Bi-Flex has similar therapeutic efficacy compared to CPAP, as determined by sleep study. Additional objectives include comparing CPAP and Bi-Flex effects on comfort and determining which parameters predict adherence. Study Design/Setting/Participants: A single center, randomized controlled double-blind study of Bi-Flex vs CPAP use in children with OSAS over a 3 month period. Intervention: Bi-Flex vs CPAP Study Measures: Objective compliance recordings, sleep study results, subjective questionnaire results. .

The purpose of this trial is to evaluate the long-term effects and cost-effectiveness of adaptive servo-ventilation (ASV) on the mortality and morbidity of patients with stable heart failure due to left ventricular systolic dysfunction, already receiving optimal medical therapy, who have sleep disordered breathing (SDB) that is predominantly central sleep apnea. Assumptions: the intervention reduces the hazard rate by 20%. The event rate in the control group is 35% in the first year. It is assumed that the hazard rate is constant over time.

Background: Upper airway muscle weakness plays an important role in the genesis of obstructive sleep apnea (OSA). Oropharyngeal exercises are derived from speech therapy consisting of isometric and isotonic exercises directed to tongue, soft palate and lateral pharyngeal wall. We hypothesized that oropharyngeal exercises will attenuate OSA severity. We will include 30 moderate OSA patients (apnea-hypopnea index (AHI), between 15 and 30 events/hour) that will randomize to 3 months of general measurements and daily nasal lavage (n=15, control) or daily oropharyngeal exercises (~30 min) plus nasal lavage (n=16). Full polysomnography, anthropometric measurements, questionnaires derived from Berlin, Epworth and Pittsburgh evaluating quantitatively (range) snoring frequency (0-4) and intensity (1-3), daytime sleepiness (0-24) and sleep quality (0-21), respectively will be performed at baseline and study end.

-Intranasal budesonide therapy may lead to improved symptoms and sleep study findings in children with mild obstructive sleep apnea with and without allergic rhinitis that would not be treated with T&A. The aim of the study is to conduct a randomized double blind cross-over trial comparing the effect of once a day intranasal budesonide therapy vs. placebo in children with mild sleep apnea that would not be candidates for T&A.