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Surgical Weight Loss Fails to Improve Sleep Apnoea WESTCHESTER, Ill -- August 15, 2008 -- A study in the August 15 issue of the Journal of Clinical Sleep Medicine shows that surgical weight loss results is an improvement of obstructive sleep apnoea (OSA), but most patients continue to have moderate to severe OSA 1 year after undergoing bariatric surgery. Results of this study suggest that it is the severity of the condition, rather than a patient's presurgical weight, that determines if OSA will be resolved. Bariatric surgery reduced body mass index from an average of 51 to 32 in 24 adults with OSA. At the 1-year follow-up, however, only 4% of participants experienced a resolution of OSA, and the majority of the study still had moderate to severe OSA. Patients who have residual OSA after surgery are encouraged to maintain ongoing treatment with continuous positive airway pressure (CPAP) therapy. "We were surprised by the severity of the residual sleep apnoea in postoperative patients," said principal investigator Christopher J. Lettieri, MD, Walter Reed Army Medical Center, Washington, DC. "The majority of individuals still had moderate to severe OSA." "The second surprising finding of this study was that despite the persistence and severity of the disease, most people thought their sleep apnoea was resolved after their weight loss and only a few still used CPAP," he said. SOURCE: American Academy of Sleep Medicine E-mail this page to a friend or colleague! To print, use this version