Active clinical trials for "Sleep Apnea Syndromes"

Obstructive sleep apnea syndrome is responsible of endothelial dysfunction, which is a independent cardio-vascular risk factor. Assessment of pulse wave velocity (PWV) and peripheral arterial tone (PAT) are study measurements of arterial stiffness, and are strong predictors of late cardiovascular events. This study will compare long term evolution in arterial stiffness (PWV) and endothelial dysfunction (PAT) for patients treated by Positive Airway Pressure Therapies.

200 patients with colorectal cancer will be investigated before surgery and 100 of them after surgery. Investigations will include polysomonographic sleep apnea recordings during one night, lung function measurements, blood gas samples and questionnaires. Controls: Men and women from two population-based cohort studies

The CHROMED project focuses its investigation on the applicability of an integrated solution for a pathological condition which: a) is very prevalent in ageing patients and b) severely impairs quality of life: COPD with other typical comorbidities such as congestive heart failure and sleep disordered breathing. A specific ICT platform in combination with a set of innovative devices will be used to collect and process useful clinical data at the patient's home and used to optimize their medical treatment. To evaluate the impact of this solution, an international multi-centric randomized control trial will be implemented in five European regions: United Kingdom, Sweden, Estonia, Spain and Slovenia, representing different social and organizational contexts in Europe.

The purpose of this study is to determine the impact of sleep and breathing problems during sleep on memory, attention, and general well being (quality of life) in people with Parkinson Disease.

The purpose of this study is to evaluate the effects of treating Obstructive Sleep Apnea (OSA) with continuous positive airway pressure (CPAP) therapy on symptoms of post traumatic stress disorder (PTSD). The study hypotheses are that CPAP use will improve PTSD symptoms overall and that CPAP use will improve sleep quality and duration, nocturnal symptoms related to PTSD, mood, daytime sleepiness, sleep-related quality of life, and general health perception.

Obstructive sleep apnea is known to be a significant source of morbidity in the general population. It has been proposed to be associated with the development of preeclampsia and fetal growth restriction. As these are conditions that have long term maternal and neonatal implications, further information may help improve maternal/fetal outcome. One reason why women and in particular pregnant women are under diagnosed is the lack of an effective, reliable screening tool. Validated questionnaires used in the general population may not be effective in screening pregnant women. The investigators hypothesize that sleep apnea will have 20% prevalence in the obese pregnant population and that it is associated with increased maternal and neonatal morbidity. The investigators will recruit obese pregnant women in their prenatal care clinics and they will be screened for OSA using validated sleep questionnaires including the Epworth sleepiness scale, the Fatigue Scale and the Berlin Questionnaire. The subjects will then perform overnight apnea monitoring utilizing a portable sleep apnea detection device. Women who meet clinical criteria for OSA will be referred for overnight polysomnogram and management by the Pulmonary and Critical Care Division of the Internal Medicine Department. For all enrolled patients the remainder of prenatal care will be per routine. Data will be collected regarding the pregnancy course and outcomes. The primary outcome of interest is the prevalence of sleep apnea in obese women and the associated maternal and neonatal morbidity. The secondary outcome measures will be molecular measures of systemic inflammation, oxidative stress and angiogenesis associated with sleep apnea.

The purpose of this study is to determine the possible effects of uvulopalatopharngoplasty (UPPP) -which is a a therapy used on patients with Obstructive sleep apnea syndrome (OSAS- on oxidative damage.

The software embedded in recent continuous positive pressure devices enables the analysis of the level of leakage that occurs during treatment around the mask or from the mouth. However, there is no clear threshold defining when it would be appropriate to implement means for correcting these leaks. In addition, the calculation methods used to detect/measure leaks and the terminology used vary according to the manufacturers of continuous pressure devices, which also complicates the clinical interpretation of the leakage reports provided by the various devices. In daily practice, when a patient complains of unintentional leakage, technicians adjust the mask, replace the nasal-mask by an oro-nasal mask or install a chinstrap. Nevertheless, those strategies are not always effective in reducing leakage or patient's complaints. A better understanding of the mechanisms beyond leak appearance for a given patient could lead to individualised leak-treatment solutions. Pressure level, mandibular behaviour, respiratory effort, sleep position or sleep stages may contribute to leak emergence. A recent exploratory study has proposed a genuine analysis method of determining factors of unintentional-leaks using polysomnographic recordings in OSA patients treated with automatic Continuous Positive Airway Pressure (auto-CPAP). Based on the same methodology, the NOMICS company (Liège, Belgium) has developed a polygraphic device (Brizzy®) recording unintentional leakage during auto-CPAP treatment and providing an etiological analysis of unintentional-leaks via a software named APIOS. Due to the innovative nature of the analysis, it appears necessary to validate it onto a population of OSA patients treated with auto-CPAP. Also, to our knowledge, there is no descriptive data of the distribution of the determinants of unintentional leaks in such a population. From this perspective, the investigators aim to retrospectively analyse some polygraphic recordings that have been performed with the Brizzy® on OSA patients treated with auto-CPAP. The primary objective of this study is to identify and describe the determinants of unintentional leaks for a population of patients with OSA and treated with an auto-CPAP device

Obstructive sleep apnea (OSA) is characterized by a repeated partial or complete obstruction of the airway that results in a intermittent hypoxia and sleep disturbance. A complex and reciprocal link between obesity and OSA exists. On the one hand, obesity is one of the main risk factors for OSA. On the other hand, OSA seems to promote obesity. The changes in sleep patterns that characterize OSA alter energy metabolism and promote weight gain. In particular, OSA is associated with metabolic disturbances, decreased physical activity and changes in energy expenditure resulting in weight gain. OSA is characterized by resistance to leptin which reduces the feeling of satiety and an increase in ghrelin levels which increases the feeling of hunger. There may be an increase in food intake, but very few studies have looked at this aspect. Our current knowledge is based on simple patient reports of the amount of food consumed per 24 hours. First-line treatment of OSA is based on continuous positive airway pressure (CPAP) but this approach is not curative and weight loss is encouraged. CAPP could facilitate weight loss by restoring sleep quality. Paradoxically, recent studies show weight gain proportional to the duration of use of CPP. Randomized controlled trials offering apneic patients a return to physical activity and hygiene-dietary rules have shown an improvement in OSA after weight loss. A better understanding of the influence of OSA and its treatment on the energy balance through food preferences and olfacto-gustatory sensoriality is an essential prerequisite for personalized nutritional management. In the face of unexpected weight gain under CPP, this type of intervention would be all the more beneficial as OSA and obesity are public health problems representing two independent risk factors for cardiovascular morbidity and mortality with increasing incidence. We hypothesize that the treatment of OSA with CPAP changes food preferences in favour of fatty and sugary high-calorie foods.

This study aimed to investigate the prevalence and clinical significance of sleep-disordered breathing (SDB) in children with mild-moderate idiopathic scoliosis (IS).