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Pathophysiology of Obstructive Sleep Apnea

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Nasal Physiology and Pathophysiology of Nasal Disorders

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Abstract

Obstructive sleep apnea (OSA) is a common sleep disorder, which is characterized by recurrent episodes of upper airway obstruction, and is associated with reductions in ventilation, resulting in recurrent arousals and episodic oxyhemoglobin desaturations during sleep. Fundamental understanding of the pathophysiology and knowledge of common patterns of OSA may help identify patients and guide therapy. The major risk factors for the disorder include obesity, male gender, hormones, age, anatomical factors, genetic factors, posture, and gravity. The pathophysiology of OSA is summarized in three steps. Firstly, the varied structural and functional determinants of an anatomical predisposition for airway closure are absolute essential components for OSA. Secondly, sleep itself emphasizes on mechanisms underlying apnea and ventilatory instability has obvious effects. Thirdly, the integration of anatomical deficits with mechanisms underlying central neurochemical control of breathing stability and compensatory neuromuscular control of upper airway caliber contribute to the pathology. These mechanisms are discussed with an emphasis on understanding the physiology and pathophysiology of OSA better, which are believed to be some of the essential knowledge for the proper management of this multi-facet and complex disorder. The main focus is the key pathophysiological factors and their interactions, to highlight recent innovations in our understanding of OSA pathogenesis.

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Author information

Authors and Affiliations

  1. Otorhinolaryngology and Head-Neck Surgery, Manisa Celal Bayar University, Manisa, Turkey

    Kivanc Gunhan

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  1. Kivanc Gunhan
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Correspondence to Kivanc Gunhan .

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Editors and Affiliations

  1. Department of Otoloaryngology Head and Neck Surgery, University of Health Sciences, Istanbul Training and Research Hospital, Istanbul, Turkey

    Özlem Önerci Celebi

  2. Faculty of Medicine, Hacettepe University, Ankara, Turkey

    T. Metin Önerci

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Gunhan, K. (2023). Pathophysiology of Obstructive Sleep Apnea. In: Celebi, Ö.Ö., Önerci, T.M. (eds) Nasal Physiology and Pathophysiology of Nasal Disorders. Springer, Cham. https://doi.org/10.1007/978-3-031-12386-3_24

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  • DOI: https://doi.org/10.1007/978-3-031-12386-3_24

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