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Related Experiment Videos

Evidence supporting routine polysomnography before bariatric surgery.

Terence O'Keeffe1, Emma J Patterson

  • 1Legacy Health System, Portland, OR, USA.

Obesity Surgery
|February 26, 2004
PubMed
Summary

Obstructive sleep apnea (OSA) is highly prevalent in patients undergoing bariatric surgery, affecting 77% of individuals. Body Mass Index (BMI) is not a reliable predictor for diagnosing sleep apnea in this population.

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Area of Science:

  • Bariatric Surgery
  • Sleep Medicine
  • Obesity

Background:

  • Obstructive sleep apnea (OSA) is common in morbidly obese patients, with prevalence ranging from 12-40%.
  • Preoperative OSA diagnosis is crucial for airway management and preventing postoperative pulmonary complications.
  • Body Mass Index (BMI) is an independent risk factor and used in predictive scoring systems for OSA.

Purpose of the Study:

  • To determine the prevalence of OSA in patients seeking bariatric surgery.
  • To evaluate the predictive value of BMI for OSA in this cohort.
  • To assess the rate of undiagnosed OSA prior to bariatric surgery.

Main Methods:

  • A cross-sectional study of 170 consecutive patients undergoing bariatric surgery.
  • Retrospective review of polysomnography results and clinical data from a prospective database.

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  • Patients stratified by BMI into four obesity categories.

    • Main Results:

    • 15.3% of patients had a prior OSA diagnosis; 80.6% had available sleep data.
    • 76.6% of patients with available data had sleep apnea, resulting in an overall prevalence of 77%.
    • No correlation was found between sleep apnea and BMI across all obesity strata.

    Conclusions:

    • OSA is highly prevalent (77%) in patients seeking bariatric surgery, irrespective of BMI.
    • The majority of OSA cases were undiagnosed before surgical consultation.
    • Routine screening polysomnography is recommended prior to bariatric surgery.