Active clinical trials for "Sleep Apnea, Obstructive"

The goal of this study is to determine if the investigators can use the STOP-BANG score to identify those patients at risk for worsening Obstructive Sleep Apnea (OSA) symptoms in the early postoperative period after major surgery. Hypotheses: - Postoperative sleep apnea parameters will be worse when compared to baseline in patients with higher scores on the STOP-BANG. - A higher STOP-BANG score will be predictive of worsening sleep apnea parameters in patients undergoing Total Knee Arthroscopy (TKA).

Participants will undergo a normal sleep study. They will be randomised to use either a FPH Pilairo Q nasal pillow CPAP mask, or another mask. The sleep technician will record leak and pressure data, and complete questionnaires regarding satisfaction and ease of use at the end of the night. It is hypothesised that the Pilairo Q mask will be superior to other standard masks for CPAP therapy in terms of ease of use, satisfaction and overall titration experience.

Obstructive sleep apnea (OSA) is a common disorder with major cardiovascular sequelae. A recent study confirmed that OSA is associated with impaired exercise capacity and increasing OSA severity predicts worsening exercise capacity, which is a marker of potential increased cardiovascular risk. However, potential mechanisms of decreased exercise capacity caused by OSA remain unclear. Several pathophysiologic mechanisms of OSA have been proposed and investigators hypothesize that endothelial dysfunction leading to exercise-induced right ventricular dysfunction and associated pulmonary hypertension is the potential mechanism for impaired exercise capacity in OSA.

Obstructive Sleep Apnoea Hypopnoea Syndrome(OSAHS)affects at least 4% of males and 2% of females. OSAHS is the combination of excessive daytime sleepiness, snoring and apnoeas (stopping breathing at night). As well as affecting tiredness, mood, concentration and quality of life - there is growing concern that it can increase the risk of high blood pressure, heart problems, strokes and thromboses (clots in the veins). It appears that OSAHS may affect the thickness of the blood and cause it to clot more easily it also causes damage to the lining of the blood vessels (endothelial injury). These effects seem independent of other risk factors such as obesity, smoking, family history of clots etc. The investigators are testing new biomarkers: gel point and fractal dimension developed at the Swansea University to measure the 'clotting' of the blood in people with OSAHS and a similar group of people who snore and who are sleepy but do not have OSAHS on sleep studies (Controls) Also markers of vascular inflammation are being measured.

Hypothesis: to address if diagnosis of obstructive sleep apnea before or during the extending check-up is a risk factor toward metastasis for melanoma stage ≥ tIIaN0M0 Study design: Adult patients with a Breslow's Thickness ≥ 1mm coming to the surgery consultation will have a nocturnal oximetry for screening of obstructive sleep apnea. Patients having an abnormal nocturnal oximetry will be explored by polysomnography in order to detect sleep apnea syndrome. Patients with sleep apnea will be treated. Standard dermatologic follow-up over a 3 years period with thoraco-abdominal-pelvic and cerebral CT-scan and a lymph-node ultrasound every 6 months will be performed.

Prospective observational study of obstructive Sleep Apnea patients treated with Bilevel Positive Airway Pressure: AirCurve 10 VAutoTM

This study purpose is to evaluate the association between Retinal Vein Occlusion and Obstructive Sleep Apnea.

This study has been developed in order to demonstrate the validity of the Sparkle respiratory effort signal.

This study is being done to see if we can improve the way we manage patients' airways. In some instances patients who have a beard, who do not have teeth or have breathing problems during sleep present a challenge to the anesthesiologist. In such patients, it is sometimes difficult to provide air/oxygen for breathing using a mask. The study doctors would like to investigate a new method for holding a mask on the face of those patients. They are interested in comparing a new method against two older methods. They believe the new method will deliver a larger amount of air to the lungs. This information may help doctors provide better care for patients who have beards, no teeth, or breathing problems during sleep.

Cardiac syndrome X consists of a triad of chest pain, abnormal exercise stress testing and normal coronary angiogram, and is hypothesized to be related to endothelial dysfunction. Endothelial dysfunction is also reported to be linked to obstructive sleep apnea. While chest pain can be one of potential presenting symptoms of obstructive sleep apnea, the investigators hypothesize that obstructive sleep apnea is common in subjects with cardiac syndrome X.