Indian J Med Res
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Obstructive sleep apnoea (OSA) is a highly prevalent condition with proven neurocognitive and cardiovascular consequences. OSA patients experience repetitive narrowing or collapse of the pharyngeal airway during sleep. ⋯ However, the mechanisms underlying these major risk factors are not well understood. We briefly review the state-of-the-art knowledge regarding OSA pathogenesis in adults and highlight the potential role of genetics in influencing key OSA pathophysiological traits.
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Obstructive sleep apnoea (OSA) syndrome is a potentially serious disorder affecting millions of people around the world. Many of these individuals are undiagnosed while those who are diagnosed, often exhibit poor compliance with nightly use of continuous positive airway pressure (CPAP), a very effective nonsurgical treatment. Various surgical procedures have been proposed to manage and, in some cases, treat OSA. ⋯ Published indications for surgical treatment include an elevated respiratory disturbance index (RDI) with excessive daytime somnolence (EDS), oxygen desaturations below 90 per cent, medical co-morbidities including hypertension and arrhythmias, anatomic abnormalities of the upper airway and failure of medical treatment. The success of surgery in OSA is generally measured by achieving a (RDI) of less than 5, improvement of oxygen nadir to 90 per cent or more with no desaturations below 90 per cent and quality of life improvements with elimination or significant reduction of OSA symptoms. From a practical point of view, achieving these goals may be extremely difficult without patients' cooperation, most notably in the realm of weight loss and maintenance of a healthy lifestyle.
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Insomnia is a highly prevalent sleep disorder that frequently occurs in its acute form and occurs at a rate of approximately 10 per cent in its chronic form in many countries. There is a high prevalence of insomnia in a variety of medical and psychiatric conditions for which insomnia often serves as a risk factor. The aetiology and pathophysiology of insomnia is such that several factors may predispose individuals for or precipitate and/or perpetuate the condition. Both sedative-hypnotic and cognitivebehavioural interventions exist for insomnia and each type of intervention have substantial levels of empirical support for their efficacy.
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Adherence to continuous positive airway pressure (CPAP) treatment for obstructive sleep apnoea (OSA) is a critical problem. Poor adherence (30-60%) to CPAP is widely recognized as a significant limiting factor in treating OSA, reducing the overall effectiveness of the treatment and leaving many OSA patients at heightened risk for co-morbid conditions, impaired function and quality of life. The extant literature examining adherence to CPAP provides critical insight to measuring adherence outcomes, defining optimal adherence levels, and predicting CPAP adherence. ⋯ Over the past 10 years, intervention studies to promote CPAP adherence have incorporated a multitude of strategies including education, support, cognitive behavioural approaches, and mixed strategies. This review of the current status of research on CPAP adherence will (i) synthesize the extant literature with regard to measuring, defining, and predicting CPAP adherence; (ii) review published intervention studies aimed at promoting CPAP adherence; and (iii) suggest directions for future empiric study of adherence to CPAP that will have implications for translational science. Our current understanding of CPAP adherence suggests that adherence is a multi-factorial, complex clinical problem that requires similarly designed approaches to effectively address poor CPAP adherence in the OSA population.
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Obstructive sleep apnoea (OSA) is a prevalent disorder with significant co-morbidities. Presently only rarely, treatments for obstructive sleep apnoea are curative. More typically, this is a disease that requires lifelong intervention and commitment from both the patients and healthcare providers. ⋯ It is equally important to identify and treat contributors to obstructive sleep apnoea severity, including obesity and endocrine disorders. In this sense, treating the patient with obstructive sleep apnoea requires a long-term partnership between patient and sleep medicine healthcare providers. With a strong partnership, obstructive sleep apnoea may be effectively treated in growing numbers of patients.