Active clinical trials for "Sleep Apnea, Obstructive"

This is a short term open, randomized cross over trial to explore and compare the efficacy of pharmacological carbonic anhydrase (CA) inhibition on obstructive sleep apnea (OSA) related hypertension. Patients will be randomized to receive Acetazolamide(Diamox®)(ACZ), Continuous Positive Airway Pressure (CPAP)or CPAP plus ACZ for 2 weeks. Following a 2 week wash-out period all study participants will receive the alternative treatment regimen. The total length of the study will be 10 weeks. The effects of carbonic anhydrase inhibition on blood pressure,hemodynamics and sleep apnea will be investigated. Study hypothesis: Carbonic anhydrase inhibition alone or in combination with nCPAP will prominently reduce blood pressure in patients with OSA. Further it is hypothesized that CA inhibition will induce a direct pharmacological effects on vascular stiffness as evidenced in overnight non-invasive assessments of vascular stiffness and that this effect will be particularly strong in patients also responding with a reduction of blood pressure.

The increased risk of atherosclerotic morbidity and mortality in patients with obstructive sleep apnea (OSA) has been linked to hypertension, insulin resistance, dyslipidemia, and systemic inflammation. The relationship regarding obstructive sleep apnea (OSA) and lipidemia and systemic inflammation is far from conclusion for obesity as a strong confounding factor.

The goals of the project is to evaluate the effects of Heliox therapy on obstructive sleep apnea syndrome (OSAS).

The purpose of this study is to evaluate the effects of moderate energy restriction on the body adiposity, severity of OSA, blood pressure, sympathetic activity, oxidative stress, inflammatory biomarkers, metabolic profile and endothelial function in obese patients with OSA.

This study is being conducted to determine whether treatment of obstructive sleep apnea (OSA) in patients with chronic kidney disease (CKD) improves kidney function. Half of the participants will receive continuous positive airway pressure (CPAP) treatment for their OSA in addition to their regular CKD treatment, while the other half will only receive their regular CKD treatment.

Obstructive Sleep Apnea (OSA) is seen in approximately 6% of Americans. It is a serious medical condition with significant medical and psychological consequences, including diabetes, hypertension, and cardiovascular disease. The treatment of choice for OSA is Positive Airway Pressure therapy (PAP). PAP supplies positive pressure to the upper airway creating a "pneumatic splint" to keep the airway open during sleep. Adherence to PAP is notoriously low, with as few as 50% reaching minimal guidelines for adherence. One comprehensive review of adherence research found that adherence to PAP was less than that for any other medical disorder. The problem of adherence is significant not only because of the medical consequences that can ensue, but also because third party payers have begun to refuse to pay for PAP therapy when adherence is less than optimal, even in the face of clinical improvement. This is a critical time to address this problem. This research study is designed to identify methods that may help people respond to PAP, the most common therapy for OSA. Identifying these methods may be an important way to better care for patients with obstructive sleep apnea. With this research, the investigators hope to find ways to help people have a better response to treatment and a better quality of life.

The coordination of swallowing and breathing is an important mechanism because the route for air and deglutition is partly shared in the pharynx. Tongue Stabilizing Device (TSD) is a preformed appliance for Obstructive Sleep Apnea (OSA) that protrudes the tongue and improves upper airway structure and function during sleep. Investigators will attempt to assess efficacy of TSD therapy on OSA and the physiological change of swallowing and breathing routes in OSA patients during sleep.

The purpose of this study is to determine whether patient-specific computer-aided design (CAD) and three-dimensional (3D) printing can be utilized to produce personalized, effective continuous positive airway pressure (CPAP) masks for children with severe obstructive sleep apnea (OSA) and craniofacial anomalies who encounter significant difficulty using CPAP because of poorly fitting masks despite exhausting available commercial mask options.

Obstructive sleep apnea (OSA) is common and has major health implications but treatment options are limited. Interestingly, the severity of OSA is profoundly reduced in deep sleep (called "slow wave sleep"), potentially via an increase in the stimulus required to arouse from sleep. Here the investigators test the idea that the medication called "tiagabine" improves slow wave sleep and reduces OSA severity. The investigators will also test whether tiagabine raises the arousal threshold (more negative esophageal pressure), and whether detailed OSA "phenotyping" characteristics can predict the improvement in OSA severity with this intervention.

Firefighters frequently work extended duration shifts and long work weeks which have adverse effects on alertness, health, safety and performance. This protocol uses a survey instrument to examine the effects of extended duration shifts on safety outcomes (e.g., motor vehicle crashes, accidents, injuries), health (e.g., diagnosis and treatment of sleep disorders, improved general health indices, decreased number of sick days), and performance (e.g., decreased response time). This study will expand understanding of the nature, scope, etiology and consequences of firefighter fatigue and increase our ability to develop guidelines that can be generalized across fire departments throughout North America. This study could provide an avenue to make lasting policy improvements that could enhance the safety, health, and performance of firefighters.