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  • Title: Non-invasive Positive Airway Pressure in Obesity Hypoventilation Syndrome and Chronic Obstructive Pulmonary Disease: Present and Future Perspectives.
    Author: Ramírez-Molina VR, Gómez-de-Terreros FJ, Barca-Durán J, Masa JF.
    Journal: COPD; 2017 Aug; 14(4):418-428. PubMed ID: 28485989.
    Abstract:
    Obesity hypoventilation syndrome (OHS) is a sleep disorder that has acquired great importance worldwide because of its prevalence and association with obesity leading to increased morbidity and mortality with reduced quality of life. The primary feature is insufficient sleep-related ventilation, resulting in abnormally elevated arterial carbon dioxide pressure (PaCO2) during sleep and demonstration of daytime hypoventilation. There are three main mechanisms that can generate diurnal hypoventilation in obese patients: alteration of the respiratory mechanics secondary to obesity; central hypoventilation secondary to leptin resistance and sleep disorder with sleep hypoventilation and obstructive apnoeas, which can be potentially solved with the use of positive airway pressure: non-invasive ventilation (NIV) and continuous positive airway pressure (CPAP). There are no established guidelines for the treatment of OHS, and only a few randomised controlled trials have been published. In this review, we have gone over the role of positive airway pressure, in particular the mechanisms that produce improvement, ventilatory modes available, clinical applications, technical considerations and future research. In addition, we added a review on NIV efficacy in chronic obstructive pulmonary disease (COPD), both in acute respiratory failure due to exacerbation and mainly in stable setting where more controversy and scientific contributions are coming.
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