View clinical trials related to Apnea.
Filter by:Obstructive sleep apnea (OSA) is a respiratory disorder of sleep characterized by recurrent episodes of complete or partial upper airway obstruction, leading to intermittent oxygen deprivation. This results in sympathetic activation and surges in blood pressure, production of vasoactive substances, as well as activation of the inflammatory and procoagulant pathways. Epidemiological evidence indicates the prevalence of OSA is higher in patients with coronary artery disease than in the general population. The investigators recently showed that 65.7% and 41.9% of the Singapore patients admitted with myocardial infarction were found to have previously undiagnosed OSA and severe OSA, respectively. In a 10-year follow-up epidemiological study, OSA was independently associated with a higher prevalence of fatal and non-fatal cardiovascular events among the otherwise healthy general population. The investigators further showed that in patients who have undergone primary percutaneous coronary intervention for acute myocardial infarction, OSA was an independent predictor of future adverse event rates. Despite the observed association between OSA and adverse cardiovascular outcomes, the underlying pathophysiological mechanisms remain unclear. In this proposal, the investigators aim to elucidate the relationship between OSA and composition of coronary atherosclerotic plaques.
This study will evaluate the safety, tolerability, and effect of multiple doses of suvorexant (MK-4305) on respiratory function in participants with mild to moderate obstructive sleep apnea (OSA) compared to administration of placebo. The primary hypothesis of this study is that multiple doses of MK-4305 do not produce a clinically significant increase in Apnea-Hypopnea Index (AHI) in participants with mild to moderate OSA, as compared to placebo.
Sleep apnea syndrome is common and increases with age. In the elderly, symptoms might be different than in the youngest people, and its consequences might be severe and atypical (falls, functional and cognitive decline). Today, there is no specific tool to detect sleep apnea in the elderly. The goal of this study is to evaluate the accuracy of oximetry for detection of respiratory disturbances in sleep apnea in the hospitalized elderly.
Objective: to evaluate the effects of a speech therapy exercises program in the treatment of Obstructive Sleep Apna Syndrome (OSAS) patients based on the clinical and polysomnography (PSG) parameters. Methods: 80 patients with OSAS will be evaluated: men, 25-65 years old, body mass index < 35 kg/m2 and scores of Epworth Sleepiness Scale > 9. Patients will be divided into four groups: I: 20 patients with OSAS underwent speech therapy; II: 20 patients with OSAS underwent placebo therapy of Speech Therapy; III: 20 patients starting treatment with CPAP underwent speech therapy; IV: 20 patients starting treatment with CPAP without speech therapy or placebo. The speech therapy include isometric and isotonic exercises to improve posture, mobility and muscle tone of the soft palate, pharyngeal constrictor muscles, tip and base of tongue, cheeks and lips. Placebo therapy includes relaxation exercises and stretching neck, without therapeutic purpose. Both therapies are applied for three months, three times a day, lasting 20 minutes each session. During the treatment, the subjects will be monitored in weekly meetings, for orientation and description of the exercises and return of the fulfilled exercises diary. The subjects will also be followed at the CPAP clinic in returns after one week, a month and at the end of the study. Conduct assessments before and after treatment and after twenty one days washout, including: assessing the upper airway, anthropometric investigation of the facial skeleton and speech of Orofacial, questionnaires (Epworth Sleepiness Scale, FOSQ, General Segment and use of CPAP, WHOQOL-BREF, snoring), Psychomotor Vigilance Test and PSG.
Introduction: It is unclear whether exercise training with or without Continuous Positive Airway Pressure (CPAP) and Oral Appliance (OA) is more effective in reducing symptoms of Obstructive Sleep Apnea (OSA) than treatment solely with CPAP or OA. Objective: In patients with moderate OSA, the investigators will evaluate the effect on the subjective and objective measures of sleep, quality of life and mood of different forms of treatment: exercise training of 4 months; exercise training of 4 months associated with CPAP and OA; treatment with CPAP and treatment with OA. Material and Methods: Sixty male patients (25-65 years, sedentary lifestyle, Body Mass Index (BMI) < 35kg/m2, Apnea-Hypopnea Index (AHI) between 15-30/h, Epworth sleepiness scale > 9) will be divided into three groups: CPAP+exercise group (CE; n=20), OA+exercise group (AE; n=20), and Exercise training group (E; n=20). The patients in groups CE and AE will complete two months of treatment with CPAP or OA to examine the separate effects of these devices. As the patients of the E group did not use the CPAP but will undergo four months of exercise training. After this initial step, patients in CE and AE groups will undergo four months of exercise training associated with CPAP or OA. The investigators will evaluate the subjective sleep parameters (sleep disorders questionnaire, the Epworth Sleepiness Scale, sleep diaries) and objective (polysomnography), Short Form Health Survey (SF-36), Questionnaire Profile of Mood States (POMS) and anthropometric measurements (neck circumference and body composition), the incremental exercise test (ergospirometry) and the one Repetition Maximum test (1RM).
The investigators have developed a simple, accurate, and a point-of-care, computer-based clinical decision support system (CDSS) not only to detect the presence of sleep apnea but also to predict its severity. The CDSS is based on deploying an artificial neural network (ANN) derived from anthropomorphic and clinical characteristics. The investigators hypothesize that patients with severe OSA defined as AHIā„30 can be diagnosed with the use of ANN without undergoing a sleep study, and that empiric management with auto-CPAP has similar outcomes to those who undergo a formal sleep study.
Recent clinical findings of research at Trondheim University Hospital suggest that surgical correction of the nose septum in addition to volume reduction of the nose cavity may be beneficial in patients who suffer from both nose obstruction and obstructive sleep apnea syndrome(data not yet published). This study aims to compare nose obstruction prevalence in sleep apnea patients and the general population
The goal is to develop a two-tiered monitoring system to improve the care of patients at risk for clinical deterioration on general hospital wards (GHWs) at Barnes-Jewish Hospital (BJH). The investigators hypothesize that the use of an automated early warning system (EWS) that identifies patients at risk of clinical deterioration, with notification of nurses on the GHWs when patients are identified, will reduce the risk of ICU transfer or death within 24 hrs of an alert. As a substudy, the investigators will pilot the use of a wireless pulse oximeter to establish feasibility and to develop algorithms for a real-time event detection system (RDS) in these high-risk patients.
Obstructive sleep apnea results in decreased attentiveness and response times in patients. The objective of this study is to quantify these consequences in pediatric OSA patients using an already established tool for examining the results of sleep deprivation and fragmentation: psychomotor vigilance testing. PVT has been used in children, but has not been studied in pediatric OSA patients. This study aims to employ PVT along the normal course of diagnosis and treatment of pediatric OSA patients in our clinical practice at Arkansas Children's Hospital. The investigators hypothesize that pediatric OSA patients will exhibit decreased PVT scoring when compared to children without OSA, and that PVT can be used to diagnose and monitor treatment outcomes in these patients.
This trial is enrolling patients who are already being seen at OHSU sleep disorder center or have been referred for clinical reasons by their physician to the OHSU sleep disorder center and are going to have a sleep study that would be paid for by their insurance company for clinical reasons. The purpose of this study is to determine whether the Portland sleep apnea quiz has a higher specificity and negative predictive value then the Berlin Sleep Questionnaire in a patient population with a high predisposition to sleep apnea presenting to a sleep center.