View clinical trials related to Apnea.
Filter by:The purpose of this study is to evaluate effects from a mandibular repositioning appliance on obstructive sleep apneas, symptoms, blood pressure and markers of stress, inflammation and cardiovascular health in patients with mild to moderate obstructive sleep apnea/hypopnea syndrome and in patients with symptomatic snoring.
The objective of the study is to assess the effectiveness of the Aspire Medical Advance System in obstructive sleep apnea by demonstrating a statistically significant mean reduction in the apnea-hypopnea index (AHI) from baseline to 6 months, measured by polysomnography (PSG).
Obstructive sleep apnea is a condition characterized by obstruction of the upper airways and episodes of apnea and hypopnea during sleep. It is associated with significant adverse health effects. The incidence of obstructive sleep apnea in the general female population is approximately 2% but the incidence of obstructive sleep apnea in pregnancy is unknown. There is some evidence that pregnancy precipitates or at least exacerbates this condition and that there may be a relationship between intrauterine fetal growth retardation and maternal preeclampsia. In addition, there are several anesthetic implications that are concern for the patient with obstructive sleep apnea. These include: exquisite sensitivity to all central nervous system depressant drugs and the potential for upper airway obstruction or apnea with even minimal drug doses; difficult mask ventilation; difficult intubation; arterial hypoxemia; arterial hypercarbia; polycythemia; hypertension; pulmonary hypertension and cardiac failure. All of these conditions pose significant anesthetic risk for the patient, and this risk may be increased further by pregnancy.
A small number of uncontrolled studies have shown a high prevalence of sleep apnea in patients with refractory hypertension and that CPAP treatment achieves a significant reduction of blood pressure in the short term. The purpose of this study is to assess the prevalence of sleep apnea in patients with refractory hypertension, and the effects of continuous positive pressure treatment on systemic blood pressure and on serum markers of endothelial dysfunction and angiogenesis.
Context: The obstructive sleep apnea syndrome (OSAS), i.e., snoring with difficulty breathing during sleep, is common in children. Continuous positive airway pressure (CPAP) therapy is the usual treatment for children who do not improve following surgery. However, CPAP is uncomfortable and is often not tolerated. We therefore plan to study a modification of bilevel positive airway pressure therapy, BiPAP with Bi-Flex that may be more comfortable. Objectives: The primary objective of this study is to determine whether BiPAP with Bi-Flex results in improvement in adherence as compared to CPAP. The secondary objective is to determine whether Bi-Flex has similar therapeutic efficacy compared to CPAP, as determined by sleep study. Additional objectives include comparing CPAP and Bi-Flex effects on comfort and determining which parameters predict adherence. Study Design/Setting/Participants: A single center, randomized controlled double-blind study of Bi-Flex vs CPAP use in children with OSAS over a 3 month period. Intervention: Bi-Flex vs CPAP Study Measures: Objective compliance recordings, sleep study results, subjective questionnaire results. .
The hypothesis of the study is the following: Patients with sleep apnea-hypopnea syndrome have different pattern in the secretion of hormones. The chronic sleep disorganization that suffer patients with sleep apnea-hypopnea syndrome (SAHS) may affect the central mechanisms that regulate nutritive behavior and energetic balance, causing an alteration in the secretion of hormones that favour the appearance and/or development of obesity.
The purpose of this study is to compare the cytokine profile of tonsillar and peripheral blood mononuclear cells in patients with obstructive sleep apnea (OSA) and to compare the blood mononuclear cell cytokine secretion profile between patients with obstructive sleep apnea and controls without apnea.
The purpose of this study is to investigate the effect of treatment with a steroid and antibiotic on the size of the tonsils and symptoms of children with OSAS.
The objective of the study is to define and compare clotting- fibrinolysis patterns, platelet function markers and endothelial dysfunction in patients with SAHS before and after treatment and normal controls age and weight matched.
The purpose of the study is to determine the effect on mood and anxiety symptoms of adding CPAP to the psychiatric treatment of patients with TRD (treatment resistant depression) and associated OSA (obstructive sleep apnea).