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      Treating restless legs syndrome in the context of sleep disordered breathing comorbidity

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          Abstract

          Obstructive sleep apnoea (OSA) and restless legs syndrome (RLS) are two of the most prevalent sleep disorders and can coexist within the same patient. Nonetheless, the recognition of RLS among OSA patients has important clinical implications, since RLS can disrupt sleep despite adequate treatment of sleep disordered breathing and should be treated accordingly. Furthermore, the presence of OSA can also increase the severity of RLS. Therefore, it is important to be able to correctly identify both disorders and treat them effectively. The present article reviews our current knowledge on this comorbidity and discusses potential treatment options for RLS in the context of OSA.

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          Treating restless legs syndrome in the context of sleep disordered breathing comorbidity http://bit.ly/2lUgFcT

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          Most cited references55

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          Restless legs syndrome: diagnostic criteria, special considerations, and epidemiology. A report from the restless legs syndrome diagnosis and epidemiology workshop at the National Institutes of Health.

          Restless legs syndrome is a common yet frequently undiagnosed sensorimotor disorder. In 1995, the International Restless Legs Syndrome Study Group developed standardized criteria for the diagnosis of restless legs syndrome. Since that time, additional scientific scrutiny and clinical experience have led to a better understanding of the condition. Modification of the criteria is now necessary to better reflect that increased body of knowledge, as well as to clarify slight confusion with the wording of the original criteria. The restless legs syndrome diagnostic criteria and epidemiology workshop at the National Institutes of Health. Members of the International Restless Legs Syndrome Study Group and authorities on epidemiology and the design of questionnaires and scales. To modify the current criteria for the diagnosis of restless legs syndrome, to develop new criteria for the diagnosis of restless legs syndrome in the cognitively impaired elderly and in children, to create standardized criteria for the identification of augmentation, and to establish consistent questions for use in epidemiology studies. The essential diagnostic criteria for restless legs syndrome were developed and approved by workshop participants and the executive committee of the International Restless Legs Syndrome Study Group. Criteria were also developed and approved for the additional aforementioned groups.
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            Restless legs syndrome/Willis-Ekbom disease diagnostic criteria: updated International Restless Legs Syndrome Study Group (IRLSSG) consensus criteria--history, rationale, description, and significance.

            In 2003, following a workshop at the National Institutes of Health, the International Restless Legs Syndrome Study Group (IRLSSG) developed updated diagnostic criteria for restless legs syndrome/Willis-Ekbom disease (RLS/WED). These criteria were integral to major advances in research, notably in epidemiology, biology, and treatment of RLS/WED. However, extensive review of accumulating literature based on the 2003 NIH/IRLSSG criteria led to efforts to improve the diagnostic criteria further. The clinical standards workshop, sponsored by the WED Foundation and IRLSSG in 2008, started a four-year process for updating the diagnostic criteria. That process included a rigorous review of research advances and input from clinical experts across multiple disciplines. After broad consensus was attained, the criteria were formally approved by the IRLSSG executive committee and membership. Major changes are: (i) addition of a fifth essential criterion, differential diagnosis, to improve specificity by requiring that RLS/WED symptoms not be confused with similar symptoms from other conditions; (ii) addition of a specifier to delineate clinically significant RLS/WED; (iii) addition of course specifiers to classify RLS/WED as chronic-persistent or intermittent; and (iv) merging of the pediatric with the adult diagnostic criteria. Also discussed are supportive features and clinical aspects that are important in the diagnostic evaluation. The IRLSSG consensus criteria for RLS/WED represent an international, interdisciplinary, and collaborative effort intended to improve clinical practice and promote further research. Copyright © 2014 The Authors. Published by Elsevier B.V. All rights reserved.
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              Obstructive sleep apnea: brain structural changes and neurocognitive function before and after treatment.

              Obstructive sleep apnea (OSA) is commonly associated with neurocognitive impairments that have not been consistently related to specific brain structure abnormalities. Knowledge of the brain structures involved in OSA and the corresponding functional implications could provide clues to the pathogenesis of cognitive impairment and its reversibility in this disorder. To investigate the cognitive deficits and the corresponding brain morphology changes in OSA, and the modifications after treatment, using combined neuropsychologic testing and voxel-based morphometry. A total of 17 patients treatment-naive to sleep apnea and 15 age-matched healthy control subjects underwent a sleep study, cognitive tests, and magnetic resonance imaging. After 3 months of treatment, cognitive and imaging data were collected to assess therapy efficacy. Neuropsychologic results in pretreatment OSA showed impairments in most cognitive areas, and in mood and sleepiness. These impairments were associated with focal reductions of gray-matter volume in the left hippocampus (entorhinal cortex), left posterior parietal cortex, and right superior frontal gyrus. After treatment, we observed significant improvements involving memory, attention, and executive-functioning that paralleled gray-matter volume increases in hippocampal and frontal structures. The cognitive and structural deficits in OSA may be secondary to sleep deprivation and repetitive nocturnal intermittent hypoxemia. These negative effects may be recovered by consistent and thorough treatment. Our findings highlight the importance of early diagnosis and successful treatment of this disorder.
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                Author and article information

                Journal
                Eur Respir Rev
                Eur Respir Rev
                ERR
                errev
                European Respiratory Review
                European Respiratory Society
                0905-9180
                1600-0617
                30 September 2019
                02 October 2019
                : 28
                : 153
                : 190061
                Affiliations
                [1 ]Sleep Research Institute, Madrid, Spain
                [2 ]Sleep Unit, Respiratory Department, Hospital Universitario Ramón y Cajal, Madrid, Spain
                Author notes
                Diego Garcia-Borreguero, Sleep Research Institute, P. Habana 151, 28036 Madrid, Spain. E-mail: dgb@ 123456iis.es
                Author information
                https://orcid.org/0000-0003-1543-7187
                Article
                ERR-0061-2019
                10.1183/16000617.0061-2019
                9488714
                31578212
                daef1f94-4488-4d1b-8ad1-5aeb82430ab6
                Copyright ©ERS 2019.

                This article is open access and distributed under the terms of the Creative Commons Attribution Non-Commercial Licence 4.0.

                History
                : 30 May 2019
                : 31 August 2019
                Categories
                Sleep and Breathing Conference Review
                5

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