View clinical trials related to Sleep Apnea, Obstructive.
Filter by: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
The study aimed to examine the effect of Continuous Positive Airway Pressure (CPAP) initiation for newly diagnosed obstructive sleep apnea (OSA) in hospitalized heart failure patients on reducing 30-day hospital readmission rate through a clinical trial.
Apart from obesity, craniofacial factors are well recognized in the pathogenesis of obstructive sleep apnea (OSA) and are likely to play an important role in influencing the response to weight loss. The prevalence of OSA syndrome is as common among the middle-aged Hong Kong Chinese populations as the Caucasians, despite our Chinese patients having much lower body mass index (BMI). From previous work on ethnic comparison, for the same degree of OSA severity, Caucasians were more overweight, whereas Chinese exhibited more craniofacial bony restriction. Cephalometric measurements based on lateral radiograph of the upper airway have shown that a shorter distance between maxillary projection from the cranial base, a smaller posterior airway space, less mandibular protrusion, a narrower space between the hard palate and cranial base, and a more caudally placed hyoid bone predispose to a higher apnea-hypopnea index (AHI). A recent study shown that a shorter mandibular length as measured by lateral cephalometry was associated with a greater fall in AHI after weight loss. Another study using craniofacial computed tomography (CT) scans to evaluate the maxillomandibular bony volume found that craniofacial restriction influenced the relationship between weight loss and OSA improvement. Collectively, these studies suggest that the effect on AHI with weight loss is likely to be more pronounced in those with a smaller craniofacial skeleton. However, the effect of the craniofacial restriction on the degree of rebound in OSA following weight gain after the weight loss intervention is unknown. The study aims to investigate the change in weight and OSA severity following cessation of a lifestyle modification program (LMP) and examine the relationship between craniofacial restriction and the degree of OSA reoccurrence.
This study will evaluate the effect of hypoglossal nerve stimulation (HGNS) on different measures of cardiovascular function in patients with obstructive sleep apnea (OSA). People with OSA who have undergone implantation of the hypoglossal nerve stimulator at the study site will be told about the study at their 2-week post-operative appointment. Those who decide to participate will have blood drawn and vascular function measurements taken before HGNS activation, during treatment, and after a temporary treatment withdrawal period. Following the 30-day period of treatment withdrawal, the HGNS therapy will be reactivated.
The purpose of the study is to test the workflow of an auto-titrating mandibular positioner in its intended setting. Participants with obstructive sleep apnea will use the device to determine their eligibility for oral appliance therapy and provide feedback on usability of the device.
The primary objective in this study is to test whether propranolol lowers glucose and free fatty acid levels during sleep in obstructive sleep apnea (OSA), and preserves vascular function (EndoPAT) versus placebo. The secondary objective is to test whether propranolol influences sleep quality, architecture, and hemodynamics in OSA. OSA will be elicited by temporarily discontinuing CPAP therapy in patients with a history OSA accustomed to CPAP therapy (CPAP withdrawal).
The study is designed as a prospective, open-label, multicentre, non-randomized, single arm treatment study to assess the safety, performance and initial efficacy trends of the GenioTM System in patients with Obstructive Sleep Apnoea (OSA).
The 4 following scores have been proposed to detect OSA (Obstructive Sleep Apnea): DES-OSA, STOP-Bang, P-SAP, and OSA50. The aim of this study is to evaluate the optimal cutoff value of these four scores to detect specifically serve OSA patients with hypoxemia.
DES-OSA and P-SAP scores have been validated to detect OSA (Obstructive Sleep Apnea). One item of P-SAP and DES-OSA is the measurement of neck circumference. The aim of this study is to compare the influence of different methods of neck circumference measurement in the accuracy of DES-OSA and P-SAP scores to detect OSA.
Telemonitoring for Positive Airway Pressure (PAP) therapy might help to establish and maintain long-term therapy adherence and thus support the beneficial effects of PAP therapy on long-term outcomes.