What are the risks of bariatric surgery for obstructive sleep apnea (OSA)?

Updated: Sep 15, 2020
  • Author: Himanshu Wickramasinghe, MD, MBBS; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Unfortunately, studies have not examined presurgery and postsurgery RDI or AHI using a design in which subjects were randomly assigned to a weight-loss surgery group and followed over time. At best, improvements in clinical symptoms have occurred after weight-loss surgery; however, again because no PSG data were available before or after weight-loss surgery and because subjects could not be randomly assigned to a weight-loss surgery group or control group, these data suggest that weight loss reduces OSA symptoms.

It is unknown whether this is a placebo effect, as objective reduction in the RDI or AHI as determined by the criterion standard of PSG, was not permitted by the human subjects committee. [204]

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