Active clinical trials for "Sleep Apnea Syndromes"

This study will evaluate the safety, tolerability, and effect of multiple doses of suvorexant (MK-4305) on respiratory function in participants with mild to moderate obstructive sleep apnea (OSA) compared to administration of placebo. The primary hypothesis of this study is that multiple doses of MK-4305 do not produce a clinically significant increase in Apnea-Hypopnea Index (AHI) in participants with mild to moderate OSA, as compared to placebo.

Upper airway resistance during sleep can present with a range of symptoms from simple snoring (SS) through to severe obstructive sleep apnea (OSA). Pharyngeal narrowing or collapse leads to reduction or cessation in airflow during sleep, and is associated with loud snoring. The investigators hypothesized that regular singing exercises could strengthen pharyngeal muscles and/or increase their resting tone, and lead to an improvement of symptoms and thus quality of life in patients with all forms of snoring.

The purpose of this research study is to examine the effects of two commonly used anesthetic drugs, dexmedetomidine and propofol, have on the shape and muscle tone of the upper airway in children, adolescents, and young adults with a history of obstructive sleep apnea (OSA) having an MRI scan. The results of this study will help in making the best decisions regarding the anesthesia medications that are most appropriate for children, adolescents, and young adults with OSA during MRI studies.

The aim of this randomized, double-blinded, sham-controlled cross-over trial is to demonstrate the effectiveness of continuous transcutaneous electrical stimulation of the pharyngeal dilator muscles to reduce sleep-disordered breathing.

In the protocol "Predicting therapeutic outcome of mandibular advancement device treatment in obstructive sleep apnea (PROMAD)", 100 patients with obstructive sleep apnea are included and started MAD treatment at 75% of maximal protrusion. All patients underwent polysomnography with MAD in situ to evaluate the effect of the MAD on severity of sleep apnea. If the results of the polysomnography with MAD are unsuccessful (defined as a reduction in AHI with the MAD in situ of less than 50% compared to baseline), the therapy needs to be adjusted. Finding the most effective protrusion should be a weighted compromise between efficacy and side-effects of MAD therapy. In patients with insufficient results on the polysomnography with the MAD at 75% of maximal protrusion, the MAD will be further adjusted until 90% of the maximal protrusion measured at the follow-up visit after the polysomnography with the MAD. After habituation and adaptation period but within 2 months after the first polysomnography with MAD, a new polysomnography will be performed to assess the effect of the 90% protruded position.

Specific aim: To test the effects of nasal expiratory positive airway pressure (EPAP) therapy on sleep apnea severity among patients with recent ischemic stroke. Hypothesis 1: Ischemic stroke patients with sleep apnea will have less severe sleep apnea, as measured by the apnea-hypopnea index (AHI), with nasal EPAP therapy compared with a control night. Hypothesis 2: Ischemic stroke patients will have higher mean levels of oxygen saturation with nasal EPAP therapy compared with a control night.

study Hypothesis: We hypothesize that CPAP could effectively improve the endothelial dysfunction by anti-inflammatory effect in patients of OSA,and compare to the effect of statin.

We are looking to test a novel device in the treatment of Obstructive Sleep Apnea (OSA). Rather than using positive pressure to open the airways, we are testing a device that delivers an auditory tone to affect neuromodulation. We will test its efficacy in treating OSA while minimizing sleep disturbance. As this device is much less cumbersome to wear, we hope this therapy device will also improve compliance with treatment.

Although obstructive sleep apnea (OSA) is associated with impaired glucose tolerance and diabetes, it remains unclear whether OSA treatment with continuous positive airway pressure (CPAP) has metabolic benefits. The objective of this study is to determine the effect of 8-hour nightly CPAP treatment on glucose metabolism in individuals with prediabetes and OSA.

The purposes of this study are to evaluate the degree and duration of medroxyprogesterone acetate effect as well as tolerability in postmenopausal women with nasal continuous positive airway pressure (CPAP) treated sleep apnea and to compare the effects with nasal CPAP.