Sleep Blog

Despite many people undergoing various types of weight loss surgery — many in hopes of getting rid of their xPAP device, where a CPAP, bi-level, auto-adjusting, or other type of positive airway pressure device — new research shows it may not be the remedy.

A study published in the August 15, 2008 issue of the Journal of Clinical Sleep Medicine shows that surgical weight loss results in an improvement of obstructive sleep apnea (OSA), but most patients continue to have moderate to severe OSA one year after undergoing bariatric surgery. Results of this study suggest that it is the severity of the condition, rather than a patient’s pre-surgical weight, that determines if obstructive sleep apnea will be resolved.

Results show that bariatric surgery reduced body mass index (BMI) from an average of 51 to 32 in 24 adults with obstructive sleep apnea.

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A study published in the May 1, 2008 issue of the journal Sleep is the first attempt to quantify the strength of the cross-sectional relationships between duration of sleep and obesity in both children and adults. Cross-sectional studies from around the world show a consistent increased risk of obesity among short sleepers in children and adults, the study found.

Francesco P. Cappuccio, M.D., of Warwick Medical School in the United Kingdom, and colleagues performed a systematic search of publications on the relationship between short sleep duration and obesity risk. Criteria for inclusion were: report of duration of sleep as exposure, body mass index (BMI) as continuous outcome and prevalence of obesity as categorical outcome, number of participants, age and gender.

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