Active clinical trials for "Apnea"

This is a prospective interventional study to better understand i) the prevalence of Obstructive Sleep Apnea (OSA) in Heart Failure with preserved Ejection Fraction (HFpEF), ii) its hemodynamic correlates, and iii) the impact of intervention with Continuous Positive Airway Pressure (CPAP) on quality of life.

Obstructive Sleep Apnea is a common medical condition in children. Diagnosis is based on polysomnography . We conducted an open prospective non randomised clinical trial to assess the efficacy of a new medical device called SUNRISE.

Obstructive Sleep apnea (OSA) is a common and underdiagnosed condition in obese pregnant women with serious and life-threatening complications to the mother and baby. The investiators propose that a non-invasive method may be used to detect patients at risk of OSA, giving these women access to the necessary treatment to treat this condition. The method is a estimation of body water, which has been shown to be linked to OSA in the non-pregnant population. Body water is estimated by applying surface electrodes to a participant who is lying down by measuring bioimpedance through body tissues by applying a tiny current between the electrodes. The electrical stimulation is not felt by the participant and has no negative effects on mother or baby.

Obstructive sleep apnea (OSA) is a highly prevalent breathing problem that occurs during sleep. OSA have been associated with the obesity epidemic in developing countries; additionally, high OSA prevalence rates are present in populations with cardiovascular and metabolic disorders. Two OSA treatments are currently available, oral appliance (OA) therapy and continuous positive airway pressure (CPAP). OAs are an underutilized non-surgical treatment and few studies have analyzed their long-term effectiveness for patients with OSA. The purpose of this study is to assess the long-term effectiveness of OA therapy in patients with OSA and to explore any changes on cardiovascular related morbidity and mortality related to this therapy.

Sleep-disordered breathing (SDB) is prevalent in children and adolescents and untreated SDB impacts key indicators of physical and psychosocial health. Positive airway pressure (PAP) therapy is highly effective for the treatment of SDB and is associated with favorable clinical outcomes but is limited by poor adherence. Emerging literature in adults suggests that intolerance to PAP therapy may be related to coexisting insomnia. However, the presence of insomnia in children with known SDB as well as its impact on PAP adherence have not been explored. This proposal will explore the association of coexisting insomnia on PAP adherence in children with SDB using a cross-sectional study design. The investigators will assess the association between insomnia and PAP therapy adherence, measured as the mean minutes of nightly PAP usage over 6 months of use on objective downloads.

Obstructive sleep apnea (OSA) is independently associated with cardiovascular diseases, including myocardial infarction and stroke. OSA may promote atherosclerosis risk factors such as hypertension, diabetes and dyslipidemia and may have direct proatherogenic effects on the vascular wall. A growing number of studies have recently focused on the role of microparticles (MPs) in the atherogenic process. Case-control studies have shown that platelet-, endothelial- and leukocyte-derived MP levels are increased in OSA and that leukocyte-derived MP are released during the night in OSA. Furthermore, experimental evidence shows that MPs from OSA patients induce endothelial dysfunction. The objective of this prospective study is to evaluate the impact of increased levels of leukocyte derived MPs on the cardiovascular outcomes in patients with prevalent cardiovascular diseases investigated for OSA.

This study will test a brief telephonic health coaching intervention to improve adherence to positive airway pressure therapy for treatment of obstructive sleep apnea.

Studies show that sleep apnea increases the risk of cardiovascular disease and is associated with obesity. However, it is unclear how sleep apnea affects fat tissue. Studies have shown that fat tissue is likely involved in developing cardiovascular disease. The purpose of this study is to see how sleep apnea changes fat tissue.

The study is aimed to carry out an epidemiology study investigating the prevalence of obstructive sleep apnea (OSA) and the association with cognitive impairment.

Obstructive sleep apnea syndrome (OSAS) is a common disorder with prevalence rates of at least 4% among the middle-aged male Caucasians and Hong Kong (HK) Chinese populations. It is characterized by repetitive episodes of upper airway obstruction, causing intermittent hypoxia, sleep fragmentation, disabling daytime sleepiness, impaired cognitive function and poor health status. OSAS patients are at increased risks of non-fatal and fatal cardiovascular morbidity and mortality including sudden death, in addition to being more prone to road traffic accidents. However, there is no long term follow up of patients with OSAS on the incidence of cardiovascular disease, compliance on the therapy and the impact of the quality of life. The study is aimed to carry out a prospective observational study assessing the role of OSAS as a possible cause of increased cardiovascular risk and cognitive decline.