Active clinical trials for "Apnea"

We intend to study, in depth, the quantitative and qualitative properties of nasal respiration in sleep-disordered breathing and sleep apnea and its relation to (CPAP) treatment with the final goal of improving patient outcome. To do this we will temporarily alter patients' nasal airflow during monitored sleep to lower CPAP air pressure, making CPAP treatment more acceptable to the patient. Additionally we plan to implement highly advanced computerized modelling in collaboration with the OSASMOD research consortium at St. Olavs Hospital/NTNU and SINTEF to predict the results of our alterations and ultimately, to use these predictions to improve both the planning and the outcomes of nasal surgery.

Our multi-disciplinary research group works closely with people who have obstructive sleep apnoea. This is a life-long illness that causes breathing to stop during sleep, which leads to low-oxygen in the blood. Breathing restarts when the airway at the back of the throat reopens, usually during arousal from sleep. In some people the repeated arousals from sleep cause daytime sleepiness. Our research has shown that the low blood oxygen levels affect thinking and feeling, and in some cases we think it damages the brain cells involved with memory, attention, emotions and decision-making. This study will investigate the relationship between the amount of oxygen in the blood and the loss (if any) of brain cells. Also how the ability to perform complex tasks is affected in patients that suffer from sleep apnoea. The results will show whether the brain damage in patients with sleep apnoea can be reversed with treatment. These findings will guide doctors in the treatment for sleep apnoea and they will cast light onto the process of memory decline with the aim to preserve brain function.

Background: Continuous Positive Airway Pressure (CPAP) remains the reference treatment for moderate to severe forms of the Sleep Apnea/Hypopnea Syndrome (SAHS). Compliance to the treatment appears to be a key factor to improving health status of these patients. Methods: The investigators conducted a multicenter, prospective, randomized, controlled, parallel group trial of standard support completed or not within 3 months of coaching sessions for newly diagnosed SAHS patients starting CPAP therapy. The coaching session consisted of 5 sessions of telephone-based counseling by competent staff. The primary outcome was the proportion of patients using CPAP more than 3 hours per night for 4 months; the secondary outcome was mean hours of CPAP usage in the 2 groups.

Obstructive sleep apnea (OSA) is common and largely underdiagnosed disease. The standard method for the diagnosis of OSA is a complete night polysomnography (PSG). Simple methods for OSA diagnosis are necessary. The overnight oximetry with the oxygen desaturation index (ODI) has been largely investigated as a diagnostic test for OSA but its accuracy remains undefined. The aim of our study is to evaluate if an wireless polygraph (Oxistar) is accurate to diagnosis OSA in patients referred to a Sleep Lab.

Obstructive sleep apnea (OSA) and nonalcoholic fatty liver disease (NAFLD) are frequently encountered in patients with metabolic syndrome (MS). Several data suggest that OSA per se could be a risk factor of liver injury. Most previous studies evaluating the association between OSA severity and the severity of NAFLD used indirect markers of NAFLD including liver imaging or liver injury blood markers or have been performed in morbidly obese patients undergoing intraoperative needle liver biopsy during bariatric surgery. The current study propose to investigate with a full night polysomnography consecutive patients undergoing percutaneous liver biopsy for suspected NAFLD.

Obstructive sleep apnea is a condition in which people have decreased breathing during their sleep. Untreated sleep apnea has been linked to increased risk for cardiovascular diseases. This research study is looking at blood clotting factors and blood vessel function in health volunteers and patients with newly diagnosed or untreated obstructive sleep apnea to better understand the underlying mechanisms for increased cardiovascular risk.

The purpose of this study is to evaluate the long-term durability of the treatment and safety of the Provent device for those individuals who were enrolled in the C009 study, were diagnosed with obstructive sleep apnea-hypopnea (OSAH), and were actively using the Provent device.

This study aims to investigate the prevalence of obstructive sleep apnea (OSA) in subjects with resistant hypertension and to evaluate the relationship between parameters of OSA severity and blood pressure control

This study is looking at the prevalence of sleep apnea in a wound center population. It uses both screening surveys and take home devices. Some measures of wound healing ability are being looked at as well.

We would like to test the effect of opioid medication on pain sensitivity in subjects who have been diagnosed with a sleep disorder called Obstructive Sleep Apnea (OSA) compared to other subjects without OSA. Patients with OSA may have an altered sensitivity to the sedative, analgesic, and respiratory depressant effects of opioids.