期刊
REVUE DES MALADIES RESPIRATOIRES
卷 27, 期 4, 页码 329-340出版社
MASSON EDITEUR
DOI: 10.1016/j.rmr.2010.03.002
关键词
Chronic obstructive pulmonary disease; Obstructive sleep apnoea-hypopnoea syndrome; Overlap syndrome; Noninvasive ventilation; Nasal continuous positive airway pressure
Chronic obstructive pulmonary disease (COPD) and the obstructive sleep apnoea-hypopnoea syndrome (OSAHS) are both common diseases affecting respectively 10 and 5% of the adult population over 40 years of age. Their coexistence, which is denominated Overlap Syndrome, can be expected to occur in about 0.5% of this population. Two recent epidemiologic studies have shown that the prevalence of OSAHS is not higher in COPD than in the general population, and that the coexistence of the two conditions is due to chance and not through a pathophysiological linkage. Patients with overlap have a higher risk of sleep-related O-2 desaturation than do patients with COPD alone and the same degree of bronchial obstruction. They have an increased risk of developing hypercapnic respiratory failure and pulmonary hypertension when compared with patients with OSAHS alone and with patients with usual COPD. In patients with overlap, hypoxaemia, hypercapnia, and pulmonary hypertension can be observed in the presence of mild to moderate bronchial obstruction, which is different from usual COPD. Treatment of the overlap syndrome consists of nasal continuous positive airway pressure or nocturnal non-invasive ventilation (NIV), with or without nocturnal O-2. Patients who are markedly hypoxaemic during the daytime (PaO2 < 55-60 mmHg) should be given conventional long-term O-2 therapy in addition to nocturnal ventilation. (C) 2010 SPLF. Published by Elsevier Masson SAS. All rights reserved.
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