Active clinical trials for "Sleep Apnea Syndromes"

There is an increase in the prevalence of obstructive apnea-hypopnea syndrome (OSA) in children for which the pathophysiological explanation is unknown. The main objective is to compare pharyngeal collapsibility in asthmatic children with SHS score > 2.75 or ≤ 2.75 (OSA prediction score validated in French). Secondary objectives: Compare pharyngeal size, tracheal size, loop gain and its components (controller, plant), lung volumes and expired and nasal NO in asthmatic children with SHS score > 2.75 or ≤ 2.75. The bias due to the possible existence of an alveolar hyperventilation syndrome associated with asthma will be taken into account.

In this study the investigators will evaluate chronotype, food intake pattern, and cardiovascular risk markers of elder individuals with OSA, in use of CPAP, when submitted to two weeks of CPAP withdrawal.

Surgical procedures are routinely performed as an alternative to continuous positive airway pressure treatment in patients with obstructive sleep apnea (OSA). However, the response to surgery is often variable. Instability of the respiratory control during sleep (or high loop gain) has been associated with poor surgical results in previous research. Acetazolamide (AZM), a carbonic anhydrase inhibitor, has shown potential in reducing loop gain without affecting other physiological OSA traits. In this protocol the investigators will evaluate the clinical efficacy of AZM add-on therapy to surgical procedures in patients with OSA.

In this project,the investigators aim to establish a Collaborative Care Model of TCM and Western Medicine to improve the quality of life and symptoms of AR with OSA children and educate care-givers diet and massage information to improve self-care ability and alleviate anxiety for parents. In addition, the investigators will use portable oxymeter to detect the change of SpO2 and respiratory arousal index daily at home and evaluate sensitivity and specificity of portable oxymeter device applied in OSA. The investigators want to give holistic health care for participants and care-givers by this project. In addition, the investigators will build a training environment to provide medical education and training opportunity to teach medical students and clinician the knowledge of pediatric allergic rhinitis and obstructive sleep apnea by caring patients and learning from clinical cases.

The aim of this trial is to compare two different ways of CPAP titration: CAP titration with fixed pressure vs. auto-titrating CPAP.

Obstructive sleep apnea syndrome (OSAS) is a common clinical condition in which the throat narrows or collapses repeatedly during sleep, causing obstructive sleep apnea events. One of the most common sites for collapse during sleep is hypo-pharyngeal space. It was founded in 50% of OSA patients those have moderate and severe apnea. DeRowe et al invented the Tongue base suspension operation in 1998 for sleep disordered breathing.

This study evaluates the addition of a comprehensive lifestyle program including dietary management and exercise to continuous positive airway pressure (CPAP) therapy in overweighted adults with obstructive sleep apnea. Half of the participants will receive CPAP therapy while the other half will have diet consultations, nordic walking sessions and CPAP.

The objectives of this study is to compare short-term outcomes of CPAP and TRD in the treatment of obstructive sleep apnea. Study design is a randomized cross-over trial during 3-weeks period of each treatment in 36 patients. Primary outcomes are quality of life, degree of sleepiness, and severity of OSA determined by FOSQ ESS, and AHI or RDI, respectively.

Severe obstructive sleep apnea (OSA) is associated with increased cardiovascular morbidity and mortality. Endothelial dysfunction, an early marker of vascular disease has been demonstrated in OSA. Regular treatment of OSA by continuous positive airway pressure (CPAP) improves endothelial function and is associated with a reduction in cardiovascular risk. Approximately 40% of patients with OSA are intolerant or insufficiently adherent to CPAP. Alternative treatments or adjuvants to the CPAP are needed. The polyphenols have demonstrated their effectiveness in improving endothelial function in patients with CV disease. No randomized controlled studies have evaluated the impact of PPR on the endothelial dysfunction associated with OSAHS.

Obstructive sleep apnea/hypopnea syndrome (OSAHS) is a highly prevalent disorder with multiple comorbidities. OSAHS is characterized by repetitive episodes of airflow reduction (hypopnoea) or cessation (apnoea) due to upper airway collapse during sleep. Its major risk factor is obesity. However, its pathogenesis is complex and multifactorial. Reduced upper airway muscle tonus and/or unstable neuromuscular output seem to be involved in this collapsus. A normal vitamin D status is necessary for normal muscle function and neuromuscular output. As obesity is associated with a high rate of hypovitaminosis D, it appears of interest to evaluate the effect of vitamin D supplementation on OSAHS patients with vitamin D deficiency.