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Obesity is an increasing problem worldwide. Over 20% of people in western societies are obese (BMI >30kg/m2) and 1-2 % are morbidly obese (BMI >40 kg/m2). According to the recent study 6.6% of Finns are severely obese (BMI > 35kg/m2) and 2.0% are morbidly obese (BMI>40kg/m2). Because conventional treatments often fail to induce sustained weight loss obesity surgery has increased rapidly in many countries. Currently, > 300000 procedures are performed in the US each year. Thus in many European countries, including Finland, the need for obesity surgery is rapidly increasing.
The most important risk factor also for obstructive sleep apnea (OSA) is obesity, and thus effective treatment of obesity is the first-line treatment of OSA. However, Reliable information of the prevalence of OSA in morbidly obese patients is still lacking. The current knowledge is based on small studies, which have demonstrated that the prevalence of OSA may be higher than believed, even 70-80% in morbidly obese patients. There is a definite need for large, well-designed, prospective clinical studies to evaluate the effects of weight reduction in OSA and other co-morbidities related to obesity. Ever increasing research data showing a strong link between obesity and OSA and their co-existence as a major risk factor in the development of cardiovascular diseases should provoke concepts to search better clinical guidelines of diagnostics and treatments in a risk group, such as morbidly obese patients.
Sleep disturbances have become a public health concern in the modern society, affecting millions of people. Obstructive sleep apnea (OSA) is one of the commonest sleep disturbances. Obstructive sleep apnea affects mostly middle-aged work force, causing a negative impact on public health since it increases both mortality and morbidity. In Finland, there are approximately 150,000 OSA patients, of whom 15,000 patients have a severe, 50,000 a moderate and 85,000 a mild form of the disease. The number of the patients is assumed to be strongly underestimated and it has been estimated that one out of five adults has at least mild OSA. OSA is tightly linked with metabolic abnormalities that contribute to an increased morbidity and mortality through cardiovascular disease. In addition, accidents by daytime sleepiness deteriorate person's quality of life and working capacity.
The most important risk factor for OSA is obesity, and thus effective treatment of obesity is first-line treatment of OSA. In a recent study it was observed that lifestyle intervention with an early weight reduction can be a curative treatment is mild OSA. However, regardless of these promising results weight reduction as a treatment of OSA is still underestimated. Particularly alarming is the exploding prevalence of morbid obesity, and that estimations have predicted this group of patients to increase most rapidly. Unfortunately, conventional lifestyle and weight reduction interventions have proven to be ineffective in long-term follow-up in these patients. In contrast, the permanent weight reduction achieved by bariatric surgery has been found to have favourable effects on diabetes, hyperlipidemia, hypertension, and also on OSA.
The treatment of OSA is demanding for both patients and physicians. There are no simple treatment modalities. Thus, there exists a definite need to improve the existing treatment modalities and to search new ones. The golden standard for treating patients with OSA is nasal continuous airway pressure (CPAP). It has been found to effective, but somewhat poor adherence (40-50%) to the treatment is certainly a major limitation. Moreover, there is little evidence about the possible beneficial metabolic effects of CPAP. Considering the rapid increase of obesity and the unsatisfactory adherence to CPAP treatment, bariatric surgery offers an interesting and viable option alongside with the conventional treatment modalities of OSA. Reliable information of the prevalence of OSA in morbidly obese patients is still lacking. The current knowledge is based on small studies, which have demonstrated that the prevalence of OSA could be higher than believed, even 70-80% in morbidly obese patients. There is a definite need for large, well-designed, prospective clinical studies on the effects of weight reduction in OSA and other co-morbidities related to obesity. Ever increasing research data showing a strong link between obesity and OSA and OSA as a major risk factor in the development of cardiovascular diseases should provoke concepts to improve better clinical guidelines of diagnostics and treatments in a risk group, such as obese patients.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Investigator), Primary Purpose: Treatment
Obstructive Sleep Apnea
Bariatric surgery, Continuous positive airway pressure
Helsinki University hospital
Not yet recruiting
Kuopio University Hospital
Published on BioPortfolio: 2014-08-27T03:15:29-0400
The purpose of this study is to assess the feasibility of conducting a comparative effectiveness study comparing a medical versus surgical approach to the initial management of obstructive...
The investigators propose a multicentric controlled randomized trial whose goal is to evaluate the possibility of a prediction of the efficiency of APAP (automatic continuous positive airw...
A randomized controlled trial of 2,700 women to assess whether treatment of obstructive sleep apnea with continuous positive airway pressure (CPAP) in pregnancy will result in a reduction ...
Hypothesis: Computer controlled continuous positive airway pressure (autoCPAP) is equally effective in improving obstructive sleep apnea syndrome symptoms, breathing disturbances, objectiv...
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Heart rate variability (HRV), modulated by cardiac autonomic function, is impaired in obstructive sleep apnea (OSA). However, the effect of continuous positive airway pressure (CPAP) on HRV is debated...
Continuous positive airway pressure (CPAP) treatment reduces blood pressure (BP) in obstructive sleep apnoea (OSA) and hypertensive patients, but there is a lack of data about the effects of CPAP on t...
Obstructive sleep apnea (OSA) is among the least studied risk factors for erectile dysfunction (ED). We aimed to determine ED prevalence in newly-diagnosed OSA patients, describe their main characteri...
Adherence to continuous positive airway pressure (CPAP) in patients with obstructive sleep apnea (OSA) is crucial. Our aim was to identify protective and risk factors against the discontinuation of CP...
Obstructive sleep apnea-hypopnea syndrome (OSAHS) is common in people with hypertension and cardiac rhythm disorder. The objectives of this study were to determine the effect of short-term continuous ...
A technique of respiratory therapy, in either spontaneously breathing or mechanically ventilated patients, in which airway pressure is maintained above atmospheric pressure throughout the respiratory cycle by pressurization of the ventilatory circuit. (On-Line Medical Dictionary [Internet]. Newcastle upon Tyne(UK): The University Dept. of Medical Oncology: The CancerWEB Project; c1997-2003 [cited 2003 Apr 17]. Available from: http://cancerweb.ncl.ac.uk/omd/)
A condition associated with multiple episodes of sleep apnea which are distinguished from obstructive sleep apnea (SLEEP APNEA, OBSTRUCTIVE) by the complete cessation of efforts to breathe. This disorder is associated with dysfunction of central nervous system centers that regulate respiration. This condition may be idiopathic (primary) or associated with lower brain stem lesions; chronic obstructive pulmonary disease (LUNG DISEASES, OBSTRUCTIVE); HEART FAILURE, CONGESTIVE; medication effect; and other conditions. Sleep maintenance is impaired, resulting in daytime hypersomnolence. Primary central sleep apnea is frequently associated with obstructive sleep apnea. When both forms are present the condition is referred to as mixed sleep apnea (see SLEEP APNEA SYNDROMES). (Adams et al., Principles of Neurology, 6th ed, p395; Neurol Clin 1996;14(3):611-28)
Disorders characterized by multiple cessations of respirations during sleep that induce partial arousals and interfere with the maintenance of sleep. Sleep apnea syndromes are divided into central (see SLEEP APNEA, CENTRAL), obstructive (see SLEEP APNEA, OBSTRUCTIVE), and mixed central-obstructive types.
Posterior displacement of the TONGUE toward the PHARYNX. It is often a feature in syndromes such as in PIERRE ROBIN SYNDROME and DOWN SYNDROME and associated with AIRWAY OBSTRUCTION during sleep (OBSTRUCTIVE SLEEP APNEAS).
Application of positive pressure to the inspiratory phase when the patient has an artificial airway in place and is connected to a ventilator.
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Obesity is the condition in which excess fat has accumulated in the body (mostly in subcutaneous tissues). clinical obesity is considered to be present when a person has a BMI of over 30 (Oxford Dictionary of Medicine). It is becoming increasing common i...