View clinical trials related to Sleep Apnea Syndromes.
Filter by:A new study have shown that high nighttime blood pressure (BP) and/or non-dipping (lack of fall in blood pressure during nighttime) is a strong predictor for the risk of cardiovascular disease and mortality in patients with hypertension. Three factors seem to affect the night time blood pressure: chronic kidney disease, obstructive sleep apnea (OSA) or the way ambulatory blood pressure is monitored. The aim of this study is to analyse the importance of these three factors on nighttime bloodpressure. Hypothesis: Central 24 hour blood pressure monitoring provides another measure of daily fluctuations in blood pressure than peripheral 24 hour blood pressure monitoring, because measurement is painless and does not interfere with activities during the daytime or night-time sleep In chronic kidney disease and OSA the decrease in nocturnal BP is lower than in healthy subjects. In chronic kidney disease the decrease in the nocturnal BP is inversely correlated to the severity of OSA, the severity of kidney disease, and blood pressure during daytime.
Our group previously conducted a study looking at the performance of three styles of positive airway pressure masks during laboratory treatment studies for obstructive sleep apnea, and we found that patients using a full-mask mask required higher positive airway pressures than patients using nasal or nasal pillows style masks to achieve successful reduction of respiratory events. In the current study we want to randomly assign patients to either nasal or full-face masks and then switch to a different mask (if nasal was originally chosen than the mask will be switched to full-face and vise versa) after 3-weeks of use to see if the number of respiratory events change with the different mask style. We expect the number of respiratory events will increase with the use of full-face masks.
The primary objective of this study is to build a well characterized cohort of patients that will be used to determine the genetic variants associated with obstructive sleep apnea (OSA)and its co-morbidities.
Prevalence of sleep-related breath disturbance in patients in cardiac rehabilitation. The aim of the register is to enable a better diagnosis and early treatment initiation in the context of secondary prevention. In addition to the prevalence, the further course of the patients shall be documented after hospital discharge to verify any gaps (sleep laboratory, therapy introduction) and emphasize the importance of rehabilitation and to examine the possibility of initiating therapy in rehabilitation.
The aim of this study is to describe the results of Lateral Pharyngoplasty in the treatment of snore and OSAS.
This study will evaluate the pharynx in patients undergoing lateral pharyngoplasty for treatment of obstructive sleep apnea through MRI, before and 6 months after surgery.
Hypothesis: Portable sleep testing of hospitalized medical inpatients suspected of having OSA is accurate in determining the need for positive airway pressure (PAP) therapy when compared to outpatient laboratory-based polysomnography. - Hospitalized medical inpatients referred for suspected OSA will be tested with a portable sleep apnea testing device during hospitalization. - These patients will then undergo an outpatient laboratory-based attended polysomnography after hospital discharge. - Results of the inpatient portable sleep apnea test will be compared to the outpatient laboratory-based polysomnography in terms of diagnostic accuracy.
The diagnosis of OSASH requires expensive sleep tests that generate long waiting lists, so we need simplified and rapid diagnostic tools. The ApneaLinkTM, is a device that allows the assessment of respiratory events by measuring the flow ventilation with a nasal cannula connected to a pressure transducer.
This purpose of this study is to 1. Determine the change in endothelial dependent vascular reactivity and vascular properties 2. Determine the changes in monocytes activation 3. Determine the change in pro-inflammatory status 4. Investigate the effect of six-month CPAP therapy on the above changes in patients with OSA
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.