Active clinical trials for "Sleep Apnea Syndromes"

This study evaluates the feasibility of conducting a randomized controlled trial that tests a patient decision aid for obstructive sleep apnea in older adults with newly-diagnosed obstructive sleep apnea treated in an outpatient sleep clinic. Half of the participants will use a patient decision aid, while the other half will receive general information about sleep.

An innovative ring type oxymetry will be wore by patient undergoing sleep study to validate it's accuracy and usefulness as a screening device for patients with symptoms of OSA

Those patient's that come to the sleep unit and that accept to participate in the study will undergo a polysomnography with the extra of an actigraphy placed in their no dominant arm wrist. The outcomes that will be analyzed are: Time in bed, assumed sleep time, wake time, sleep efficiency, sleep latency, light's on/light's off

Ehlers-Danlos Syndrome (EDS) is a clinically and genetically heterogeneous group of inherited connective tissue disorders characterized by joint hypermobility, skin hyperextensibility, and tissue fragility. EDS features such as genetically related cartilage defects, craniofacial abnormalities and increased pharyngeal collapsibility have been proposed to cause obstructive sleep apnoea (OSA). There is evidence from studies based on questionnaires that EDS patients might be more frequently affected by OSA and sleep disturbances than the general population. However, the actual prevalence of OSA in patients with EDS is unknown. Aortic root dilation and dissection are common complications of EDS and little is known about the underlying risk factors. Preliminary evidence suggests a link with OSA but this has not yet been investigated. The primary objective of this study is to assess the prevalence of OSA in EDS-patients (100) compared to a matched control group (100). The secondary objective of this pioneer study is to assess whether there is a relationship between OSA severity and aortic diame-ter/craniofacial abnormalities in EDS patients.

The purpose of this study was to measure the retinal nerve fiber layer (RNFL) thickness in eyes of Obstructive Sleep Apnea/hypopnea syndrome (OSAHS) using optical coherence tomography (OCT), and assess whether it is decreased. The investigators then compared the results with healthy subjects database of RNFL thickness from another retrospective study.

To determine if autotitrating positive airway pressure (APAP) naïve patients with OSA can successfully use APAP following general anesthesia.

More often than not, obesity occurs in tandem with Obstructive Sleep Apnea (OSA), and each disease effectively perpetuates severity of the other. Surgical weight loss (i.e. bariatric surgery), and nocturnal, positive airway pressure therapy (PAP) are used to treat the two conditions separately, and these treatment modalities both present a unique set of challenges in terms of patient-adherence. Furthermore, the combined effects of these therapies on body weight and OSA severity are unclear, and require longitudinal investigation. The purpose of the research proposed herein is twofold: A) To prospectively demonstrate the specific physiologic/psychological improvements in OSA risk factors and disease severity that occur in a subset of bariatric surgery patients with OSA, who are being effectively treated with PAP and furthermore; B) To elucidate differences in postoperative outcomes (weight-loss, dyslipidemia, OSA severity, comorbidity resolution) between patients who are compliant or non-compliant with prescribed PAP therapy. The investigators anticipate that results will be used to develop and streamline approaches to improve pulmonary/sleep-related outcomes in bariatric surgery patients. Furthermore, this line of research has many implications for strategies to strengthen the coordination of care between bariatric surgery, pulmonology, and other clinical sub-specialties that are integral to the postoperative health of these patients.

The diagnosis of OSASH requires expensive sleep tests that generate long waiting lists, so we need simplified and rapid diagnostic tools. The ApneaLinkTM, is a device that allows the assessment of respiratory events by measuring the flow ventilation with a nasal cannula connected to a pressure transducer.

The prevalence of obstructive sleep apnea (OSA) in patients admitted to the hospital is likely significantly higher than the general population as hospitalized patients carry a high prevalence of co-morbid conditions, such as diabetes and cardiovascular diseases, that are commonly associated with OSA. The true prevalence of OSA in hospitalized patients is not known, though there is limited data suggesting that the rate of OSA in hospitalized patients is indeed high. Two studies have reported on the rate of polysomnographic (PSG) diagnosis of OSA in patients referred for OSA evaluation while in-hospital. These studies reported frequencies of 77% (in a retrospective study of 100 patients) and 88-100% (in an observational study of 250 patients). Similarly, 2 studies evaluated the prevalence of sleep disordered breathing in patients admitted with acutely decompensated heart failure, finding frequencies of sleep apnea in 97% (prospective study of 29 patients studied with PSG) and 75% (prospective study of 395 consecutive patients studied with portable monitors). However, all of these studies are limited by either study design (retrospective), small numbers, limited channel portable monitoring, or evaluations of highly select patient populations. Furthermore, none of these studies examined screening tools that may help to identify which patients are at risk for OSA and thus might require the more extensive and expensive objective testing. This study will test the following hypotheses: The prevalence of OSA in unselected hospitalized medical patients will be more than 50% of the study population. Specific Aim 1: To determine the prevalence of OSA in a group of unselected hospitalized medical patients by a combination of sleep symptoms and PSG performed while in-hospital. Screening tools will be able to accurately identify OSA in hospitalized medical patients. Specific Aim 2: To determine the accuracy of different screening questionnaires for the diagnosis of OSA in hospitalized medical patients by comparing the questionnaire results to that of a PSG performed while in-hospital.

This project will evaluate the effects of World Trade Center (WTC) exposure in WTC responders 10-13 years following the events of 9/11. Prior studies have described persistent pulmonary function abnormalities in a significant portion of responders. The investigators study seeks to examine the relationship between pulmonary function abnormalities and other markers of chronic cardiopulmonary disease and further elucidate the pathophysiologic effects of exposure to inhaled particulate matter (PM) on 9/11. This study will provide critical information regarding risk of exposure to PM, risk factors for disease and potential for improvements in diagnosis and treatment.