View clinical trials related to Sleep Apnea Syndromes.
Filter by:The main purpose of this study is to determine if acute beetroot juice supplementation reduces peripheral chemoreflex sensitivity in patients with obstructive sleep apnea. All subjects will consume low-dose (BRL), higher-dose (BRH), and placebo (BRP) beetroot juice randomly on three independent study visits. Beetroot juice also improves blood flow thus, the investigators will also measure blood flow to the carotid chemoreceptors.
Overall objective: To understand the feasibility of performing a randomized trial using a simple, minimally-invasive postural therapy approach to improve sleep disordered breathing (SDB).
Sarcoidosis is a multisystemic granulomatous disease that affects individuals worldwide without known pathogenesis, and the role of comorbidities has not been fully assessed in the scientific literature. An increased incidence of Obstructive Sleep Apnea Syndrome (OSAS) has been described in Sarcoidosis although this association has not been explained yet and no data is available about the effect of treatment with Continuous Positive Airway Pressure (CPAP) in Sarcoidosis. Also, patients affected by Sarcoidosis usually experience a state of physical and mental weariness called fatigue and reported in approximately 60-80% sarcoid patients and thought to be a consequence of inflammatory mediators but the high prevalence of OSAS could be a remarkable bias in clinical evaluation because fatigue is also strongly associated with sleep disorders. Thus, there is a real need for assessing not only the real prevalence of OSAS in Sarcoidosis but also the effect of CPAP treatment on fatigue status experienced by sarcoidotic patients.
The purpose of this multi-center observational study (utilizing the sites enrolling patients for the Pediatric Adenotonsillectomy Trial for Snoring (PATS) [1U011HL125307-O1A1]) is to gather data regarding children with Down syndrome (DS) and Sleep Disordered Breathing (SDB) referred for treatment with adenotonsillectomy to inform a future randomized controlled trial in this population.
Sleep Disordered Breathing (SDB) is a spectrum of conditions spanning from Simple Snoring to Severe Sleep apnea. SDB has multiple underlying mechanisms. Some portion of patients have issues with upper airway dilator muscle control; and such patients may be amenable to upper airway muscle training exercises using neuromuscular stimulation techniques. The investigators and others have published on the topic of neuromyopathy in the upper airway, defining a subgroup of OSA patients who may be amenable to training exercises. Based on this background, the investigators seek to test the hypothesis that upper airway tongue muscle training using transoral surface neuromuscular electrical stimulation may have benefits to patients with Simple Snoring.
The purpose of this study is to determine the sleep patterns of subjects with or without sleep disturbances (insomnia, sleep apnea) and compare these findings with their previous FDG/PIB PET, structural MRI and brain blood flow scams performed during their participation in the Following studies 'Alzheimer's Disease Core Center (ADCC) Clinical Evaluation' (IRB: 2942), MRI Progression Markers of Cognitive Decline in the Elderly' (IRB:09-0586), or 'Imaging Neuro inflammation in Alzheimer's Disease with [11C] Arachidonic Acid (AA) and PET'(IRB: 10-00442).
Airway assessment using ultrasonography can provide an additional information in identifying difficult intubation in OSA patients. The main purpose of this study is to find the correlation of the ultrasound parameters and the Cormack Lehane Score (CL Score) as well as to identify the cut-off point of the ultrasound parameters that would differentiate between the easy and difficult intubation.
Negative expiratory pressure is a technique that has been the focus of many studies in the last few years. Airway response to the application of a negative expiratory pressure (NEP) can be used to detect the presence of upper airway collapsibility. In normal subjects, an increase in expiratory flow is observed while in patients with collapsible upper airway, the flow will show a transient decrease due to airway collapse. The objectives of this study will be initially to investigate the diagnostic utility of this technique as a noninvasive measurement of the stability of the upper airway in sleep-related breathing disorders. Secondly, we aim to see the sites of airway obstructions, discovered by NEP, through nasal endoscopy. Finally, we aim at testing the utility of NEP technique in the evaluation of therapeutic response. For this purpose, we will apply it in patients before and after airway stabilization interventions like ENT surgery, oropharyngeal exercises, orthodontic mandibular advancement electrical stimulation of the hypoglossal nerve.
Currently, there is no pharmacological intervention for OSA that targets multiple pathophysiological deficits in combination. Here the investigators study the effect on sleep apnea severity of combinations of pharmacological agents that stimulate the pharyngeal muscles, stabilize ventilatory control, and increase the arousal threshold.
The purpose of this study is to assess the safety and tolerability of multiple dose administration of gefapixant (MK-7264) in participants with moderate to severe obstructive sleep apnea (OSA). The primary hypothesis is that multiple dose administration of gefapixant (MK-7264) in participants with moderate to severe OSA reduces the Apnea Hypopnea Index (AHI) relative to placebo.