Improvement in Nocturnal Hypoxemia in Obese Patients with Obstructive Sleep Apnea after Bariatric Surgery: a Meta-Analysis.

For a couple of years, there are increasing evidences that nocturnal hypoxemia may play an important role in the pathophysiology of OSA. In this meta-analysis, the authors found that bariatric surgery is effective at improving nocturnal hypoxemia in obese patients with OSA. The reduction in body weight may be the predominant factor. However, their findings must be confirmed by other studies.

https://www.ncbi.nlm.nih.gov/pubmed/30411226