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Active clinical trials for "Sleep Apnea, Obstructive"

Results 1741-1750 of 1815

Nocturnal Blood Pressure and Hypertension - Central and Peripheral 24-h Blood Pressure.

HypertensionChronic Kidneys Disease1 more

A new study have shown that high night time blood pressure (BP) and/or non-dipping (lack of fall in BP during night time) is a strong predictor for the risk of cardiovascular disease and mortality in patients with hypertension. Three factors seem to affect the night time BP: chronic kidney disease, obstructive sleep apnea (OSA) and the way ambulatory blood pressure is monitored. Hypothesis: Central 24-h blood pressure monitoring is a better way of monitoring blood pressure than conventional peripheral monitoring. In hypertension, chronic kidney disease and obstructive sleep apnea (OSA) the night time blood pressure is elevated, and is OSA the elevation is correlated to the severity of OSA. In OSA the kidneys handling of salt and water is disturbed. In OSA there is disturbances in hormonal balance.

Unknown status33 enrollment criteria

Acoustic Pharyngometry in Obstructive Sleep Apnea Syndrome Patients, With Indication of Continuous...

Obstructive Sleep Apnea Syndrome

Acoustic Pharyngometry (AP) is a method of measurement of Transversal Sectional Areas (TSA) and Volumes of oral cavity and pharynx, based on acoustic waves. The aim of this study is to describe changes on oropharynx dimensions caused by CPAP (Continuous Positive Air Pressure) in patients with severe Obstructive Sleep Apnea Syndrome when compared with patients with Primary Snore, using AP. The exam will be made during the use of CPAP, at various pressures. The investigators also intend to determine if pressure determined by Polysomnography in OSAS patients cause some type of different change in AP graphic.

Unknown status5 enrollment criteria

Sleep Apnea Syndrome on Acromegaly: Impact of the Treatment on the Carbohydrates Metabolism.

AcromegalyObstructive Sleep Apnea1 more

Sleep apnea is a common situation that affects up to 80% of acromegalic patients. This disease is linked to disturbance on the carbohydrate metabolism increasing the rates of diabetes. The objective of this trial is to assess (with the euglycemic hyperinsulinemic clamp) the impact of the treatment of sleep apnea, with a continuous positive air pressure device (CPAP), on the insulin resistance.

Unknown status9 enrollment criteria

Long Term Cardiovascular Complications in Men With Obstructive Sleep Apnea

Obstructive Sleep ApneaCardiovascular Diseases1 more

Subjects with Obstructive Sleep Apnea (OSA) are at increased risk of developing cardiometabolic complications, and effective long-term nCPAP treatment significantly reduces the risk of cardiovascular morbidity and mortality.

Unknown status2 enrollment criteria

Portable Monitoring Device for the Diagnosis of Sleep Apnea in Obese Patients

Obstructive Sleep Apnea SyndromeObesity

Introduction The portable monitoring system (PMS) recording of cardiopulmonary parameters (level III of ASDA) has been validated in subjects with high probability of Obstructive Sleep Apnea (OSA) without comorbidities. However, there is not any study evaluating this system when OSA is associated with morbid obesity, so the validation of PMS will be very useful in order to properly work-up this highly risk population. Objective: To evaluate the accuracy of level III type of PMS - Stardust™" (STD), on patients with level II and III of obesity and high clinical suspicion of OSA. Methods:Participants with BMI > 35 kg/m2 and with suspicion of OSA will consecutively be selected from an Outpatients Sleep Clinic of UNIFESP. They will be randomized for the following order of recordings: 1) STD at home for 1 night 2) STD in the sleep lab simultaneous to PSG. AHI will be taken for subsequent analysis:a) AHI PSG b) AHI STD -lab and c) AHI STD- home.

Unknown status5 enrollment criteria

Cardiovascular Risk Stratification in Patients With Obstructive Sleep Apnea

Obstructive Sleep ApneaObesity

The purpose of this study is: To determine the frequency of cardiovascular diseases in patients with OSA, obese, overweight, and lean (BMI<25) To analyze the CPAP treatment over the clinical evolution of OSA patients To determine if OSA is a independent predictor of cardiovascular risk

Unknown status2 enrollment criteria

Polymorphisms in Inflammatory Cytokines Genes in Subjects With Obstructive Sleep Apnea

Sleep Apnea

Obstructive sleep apnea is a common sleep disorder. It is known to be related with increased body mass, abdominal obesity, insulin resistance and hypertension. It is currently believed to be a feature of the metabolic syndrome. Other features of the metabolic syndrome-such as insulin resistace were found related to inflammation and inflammatory cytokines. Several polymorphisms in the genes that encode interleukin 6,inteleukin 10 and TNF-alpha have significant influence on the amounts of cytokine production. we thus hypothesize that polymorphisms related to increased pruduction are more common in subjects with OSA than in matched controls

Unknown status2 enrollment criteria

Sleep Apnea in Look AHEAD (Action for Health in Diabetes)

Obstructive Sleep ApneaType 2 Diabetes

This study will assess the effects of weight loss on sleep-disordered breathing (SDB) in 120 obese, type 2 diabetics with obstructive sleep apnea (OSA) from four Look AHEAD sites. Changes in SDB will be compared between subjects randomized to weight loss (Lifestyle Intervention Group) versus non-weight loss (Diabetes Education and Support Group) conditions within the context of the Look AHEAD Study. Weight loss is frequently recommended for obese patients with OSA, but the empirical foundation for this recommendation is not well substantiated. Weight loss in obese apneics improves but does not eliminate SDB. Moreover, the degree of improvement is not correlated with the amount of weight loss. This study will assess SDB before treatment and at 1 and 2 years. We will also investigate clinical measures of fat distribution that may mediate the non-linear relationship between weight loss and improvements in SDB. Finally, we will examine the role of SDB in mediating changes in blood pressure associated with weight loss.

Unknown status3 enrollment criteria

Metabolic Profiling in Patients With Obstructive Sleep Apnea: From Plasma to Hypoxic Cell Model...

Obstructive Sleep ApneaCardiovascular Disease

This three-year project aims to Profile the differentially expressed metabolites in healthy patients with severe Obstructive sleep apnea (OSA) before and after six-month continuous positive airway pressure (CPAP) treatment Identify the candidate metabolites involved in biologic pathways attributing to OSA phenotyping and response to CPAP treatment Validate candidate metabolites in the intermittent-hypoxia model of peripheral monocytes

Unknown status26 enrollment criteria

Long Term Prognosis of Taiwanese Patients With OSA

Obstructive Sleep Apnea

The purpose of this study is to explore long-term prognosis and to identify the predictors in Taiwanese OSA patients. Validation of the prediction model derived from NHIRD with the database of National Taiwan University Hospital (NTUH) sleep center is planed to determine the effects of different treatments on long-term prognosis.

Unknown status3 enrollment criteria
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