Active clinical trials for "Sleep Apnea Syndromes"

The OAMMM study is a mono-centrer , non interventional, prospective study, carried out in CH Valence Oral Appliance is indicated for first line moderate sleep Apnea Syndrome or severe sleep Apnea Syndrome after failure of positive airway pressure (CPAP). Clinical impact of each mm advancement of Oral Appliance is imperfectly assessed. The study aim to assess clinical and paraclinical efficacy of an oral Appliance on each mm of advancement.

Background: Previous studies have reported that intermittent hypoxia in obstructive sleep apnea (OSA) is associated with tumor progression, metastasis and treatment outcomes. However, studies explaining the relationships between specific types of cancer and OSA are needed. In this study, it is aimed to show the effect of excessive daytime sleepiness as determined by Epworth sleepiness scale(ESS) and the effect of OSA risk determined by STOP BANG questionnaire on survival and treatment outcomes in lung cancer. Method: The patients who admit the palliative care outpatient clinic of our hospital with the diagnosis of lung cancer (stage 3 and stage 4 non-small cell lung cancer or limited / extensive stage small cell lung cancer) between July 2019-2020 will be assessed for excessive daytime sleepiness(EDS) and risk of obstructive sleep apnea (OSA) by Epworth sleepiness scale and the STOP-BANG questionnaire. The patients will be grouped according to the risk of OSA and EDS.Total / progression-free survival, treatment outcomes and side effects of the treatment will be evaluated comparatively.

Nocturnal reduction in blood oxygen is expected independently associated with the development of worsened glycemic control in individuals with type 2 diabetes mellitus. The aim of the present study is to assess the correlation between nocturnal oxygen desaturation assessed by overnight pulse oximetry and glycemic control in diabetic patients with obstructive sleep apnea.

A project of the feasibility of using NightOwl to detect the prevalence of obstructive sleep apnea (OSA) in patients with atrial fibrillation (AF). The long-term aim is to use the device to screen for OSA in a randomized clinical trial in AF patients undergoing ablation and/or a randomized trial of AF patients undergoing cardioversion.

We aimed to investigate the relationship between obstructive sleep apnea (OSA) risk and respiratory inflammation evaluated by the exhaled breath condensate （EBC）interleukin-6 IL-6 and plasma SP-D, based on the Berlin questionnaire (BQ) screening values in an adult, urban community in Beijing, China. Volunteers aged >40 years were recruited from the Shichahai community of central Beijing. Their general information and disease history were recorded. OSA risk was assessed using the BQ. IL-6 in EBC and plasma SP-D were detected by enzyme-linked immunoassay (ELISA)through specimens collected on fasting. The differences in IL-6 and SP-D contents between high-risk and low-risk groups for OSA were compared, and the factors affecting their contents were analyzed.

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.

In obese patients, the prevalence of obstructive sleep apnea (OSA) is around 40% in men and 30% in women. Weight loss after bariatric surgery significantly improves OSA, with 75% of patients having a reduction in OSA severity or becoming non-apneic. We hypothesize a similar effect on OSA of nutritional and psychocomportemental rehabilitation for obese patients. However, we expect weight loss and blood pressure reduction to probably be lower in obese patients who have OSA and nutritional rehabilitation alone than in those who are treated for their OSA or are without OSA. To address this question, we will conduct an observational study on obese patients, treated or not for OSA, following nutritional and psychocomportemental rehabilitation.

Obstructive sleep apnea syndrome (OSAS) in children has high prevalence and severe complications, and its first line of treatment (adenotonsillectomy) has risk of complications. Even though the use of presurgical CPAP seems logical due to its effects in adults, it must be studied in children due to the different physiopathology and adherence. One non-invasive way of study the effect is via acoustic pharyngometry, which can measure the anatomical site of obstruction. The post-surgical anatomical changes could correlate with a persistent OSAS, which would be helpful in selecting those patients who require a post surgical sleep study. The main goal of the study is to cuantify the changes in the oropharyngeal volume via acoustic pahryngometry after CPAP use, and also the changes after adentonsillectomy in children.

Hypertension is a common consequence of obstructive sleep apnea (OSA). However, not all individuals with OSA have hypertension and there are major individual differences in blood pressure response to positive airway pressure treatment of OSA. This project is focused on determining the basis of these individual differences in blood pressure response to OSA and will evaluate the possible underlying reasons for these differences. The results will help clinicians to know whether or not to expect a reduction in blood pressure (BP) to OSA treatment in a given patient and thereby personalize patient management.

Obstructive sleep apnea syndrome (OSAS) causes hypoxemia and hypercapnia, which may impair cerebral blood flow and cause deficits in behavior. This is a case-control study designed to investigate cerebral blood flow and neurocognitive function in children with OSAS when compared to these findings from normal children. The study hypothesis is that children with OSAS have an impaired cerebral blood flow during wakefulness and sleep compared to normal controls, and that the degree of this impairment correlates with neurocognitive function.