Abstract
Obstructive sleep apnea (OSA) is known to cause adverse health-related effects, reduce quality of life, and is the most common sleep disordered respiratory disease. Obesity is a main risk factor for OSA and several studies have investigated the effect of surgical weight loss on OSA. Some of these studies have shown an improvement in the apnea-hypopnea index (AHI) in OSA patients following bariatric surgery; however, the extent to which OSA improves is unclear. In their 2009 systematic review, Greenburg et al concluded that despite an improvement in AHI, most OSA patients still had moderately severe OSA and should not expect a cure from bariatric surgery.
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