Active clinical trials for "Sleep Apnea Syndromes"

In a prospective observational study, the investigators investigate the prevalence of sleep disordered breathing in patients with severe valvular regurgitation and the effect of using the minimal invasive Clip technique on sleep disordered breathing.

The investigators hypothesize that sub-mental ultrasonography measures are strongly correlated with the severity of Obstructive Sleep Apnea Syndrome and the related specific subjective scales.

The objective of this retrospective observational study will be to investigate the between the Obstructive Sleep Apnea Syndrome (OSAS) and Sleep Bruxism (SB), in individuals diagnosed through polysomnography (PSG).

The role of drug-induced sleep endoscopy (DISE) in the management of obstructive sleep apnea hypopnea syndrome (OSAHS) is not precisely defined for children. The primary objective of this study was to describe the consequences of DISE in the therapeutic management for children with OSAHS. The secondary objectives were to analyze the correlation between the number of obstructive sites found during DISE, the value of apnea-hypopnea index (AHI), and the type of OSAHS.

Introduction: The Obstructive Sleep Apnea (OSA) is characterized by obstructed superior airway during sleeping period promoting intermittent hypoxia-reoxygenation events. These events cause consequences such as cardiorespiratory and peripheric muscle structure alterations, which can cause reduction of the exercise tolerance. In this sense the continuous positive airway pressure (CPAP) is important to decrease the repercussions of the illness and cooperate to maintain the exercise functional capacity. To measure this capacity, one good option is the six-minute step test (6MST), that is low cost and submaximal, in addition to being adaptable and portable. However, there are doubts if it´s really capable to determinate the functional capacity of exercise of individuals with OSA treated with CPAP. Objective: Evaluate the validity and reproducibility of 6MST to determine the functional capacity of exercise in individual with OSA treated with CPAP and develop a model of a reference equation for the performance of the test in this population. Material and methods: This is an observational, prospective and cross-sectional study, in which will be evaluated 132 volunteers (66 men and 66 women), with age between 18 and 65 years, diagnosed with OSA of moderate and severe degree, treated with CPAP for a minimum of three months, recruited of the ambulatory of pneumology of Otávio de Freitas Hospital. Initially will be collected personal and anthropometric information, answered to sleep questioners, quality of sleep and physical exercise, also respiratory muscle strength and lung function. The realization of the tests to evaluate the functional capacity of exercise will be done in two days with a maximum of seven days between the tests. In each day, the volunteers will do two 6MST and two six-minute walk test (6MWT), which order will be determined by randomization. Expected Results: It is expected that the 6MST to be showed as reproducible and capable to quantify the functional capability of exercise in individuals with OSA treated with CPAP.

This study aims to determine the overall accuracy, sensitivity, and specificity of the Belun Ring device in evaluating obstructive sleep apnea by comparing the device to the attended overnight in-lab polysomnography which is the gold standard for diagnosis of obstructive sleep apnea. Our hypothesis is that the Belun-Ring, a type 4 portable monitoring device, is overall sensitive and specific for evaluation of obstructive sleep apnea when compared to the attended overnight in-lab polysomnography.

The objective of this prospective cohort study is to determine the prevalence of obstructive sleep apnoea (OSA) in patients with and without thoracic aortic aneurysm.

The obstructive sleep apnea syndrome (OSAS) is frequently reported in subjects with trisomy 21. The consequences of this syndrome are expressed in various disorders such as cognitive and cardiovascular alterations. It is also reported a premature exhaustion with the achievement of various professional or recreational activities, as well as an increase in the frequency of daytime sleepiness. In trisomy 21, there are factors that are systematically associated with obstructive apnea. The identification of these factors would make it possible to diagnose OSAS earlier, under-diagnosed in the population with trisomy 21 even though these OSAS are associated with increased cardiovascular risks. The aim of this study is to identify the predictive factors associated with sleep apnea in the trisomy population in order to propose early detection. OSAS treatment in a young adult with Down syndrome could reduce physical fatigue apparition during various activities, reduce daytime sleepiness, and have a positive impact on physical fitness, and therefore more broadly on health.

Obstructive sleep apnea (OSA) is a common form of sleep disordered breathing characterized by partial or complete upper airway obstructions during sleep. OSA is associated with major comorbidities and perioperative complications. These complications are caused not only by the OSA itself, but also by exacerbations of this syndrome during the perioperative period (1). Benzodiazepines, volatile anesthetics and opioids may lead to lower hypoxia and hypercapnia sensitivity and may cause respiratory depression (2-5). Therefore, preference of neuraxial blockades and avoidance of opioids has been suggested for patients with OSA (6). However, there is still lack of evidence to evaluate the effects of various anesthesia procedures on OSA (6,7). We hypothesize different anesthetic procedures will have different effect on OSA exacerbations in the postoperative period. Accordingly, the aim of this study is to compare the number of sleep disordered breathing episodes in the postoperative period in patients with different anesthetic procedures.

Obstructive Sleep Apnea (OSA) is a common and under-diagnosed breathing disorder characterized by recurrent partial or complete collapse of the upper airway (tongue, soft palate) during sleep. It causes recurrent episodes of asphyxia (suffocation) resulting in fragmented sleep, low blood oxygen levels (hypoxemia), and high carbon dioxide concentrations. Untreated OSA is associated with serious heart/lung and metabolic diseases including strokes, diabetes, and heart attacks. When a patient with OSA undergoes surgery, the symptoms of OSA are exacerbated afterwards due to the effects of anesthesia and related medications such as those used for pain control. This puts patients at higher risk for complications and necessitates nursing care and monitoring that are resource intensive. In many hospitals, patients with an OSA diagnosis are monitored after surgery in "high acuity" wards where the nurse to patient ratio is higher than usual. These high acuity/monitored beds are often in high demand, and their unavailability may sometimes mean cancellation of surgery or prolonged patient stay in the Post-operative Recovery Room, further causing operating room backlog. Another serious issue is that many patients do not know they actually have the OSA condition. It is estimated that up to 20% (1) of people in the general public have OSA and that 75% (2) of them are not diagnosed. When someone with OSA goes for surgery without previously being diagnosed, special precautions in care and monitoring may not be in place, until a complication develops. For this reason, this population - those most susceptible to have OSA, but with no previous formal testing for the condition - is the most at risk for complications, and is the target group for this trial. We plan to identify the study population by screening for OSA using the STOP-BANG questionnaire. Those who score high on this 8 item screening test have high likelihood of actually having OSA if they were to undergo formal testing and diagnosis in a Sleep Lab. We will identify cardio-respiratory complications by conducting a chart review and determine whether admission to a "high acuity" bed had any impact. As OSA patients are at higher risk for cardiovascular complications at baseline and around the time of surgery, blood test for troponin will be performed on post-op day 1 and 2 to investigate the rate of myocardial injury. With the rate of MINS (myocardial injury after non-cardiac surgery) reported to be 8% with almost 10% 30 day mortality (per VISION trial), this pilot project which focuses on arthroplasty patients with suspected OSA, will inform us of the arthroplasty surgery specific MINS risk for comparison.