Obstructive sleep apnea and early weight loss among adolescents undergoing bariatric surgery

Jill L. Kaar*, Nazeen Morelli, Samuel P. Russell, Ishaah Talker, Jaime M. Moore, Thomas H. Inge, Kristen J. Nadeau, Stephen M.M. Hawkins, Mark S. Aloia, Stacey L. Simon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Background: Little is known regarding obstructive sleep apnea's (OSA's) prevalence or the factors related to OSA remission post–metabolic bariatric surgery (MBS) in adolescents. Objectives: To identify the baseline OSA prevalence in adolescents with severe obesity and examine factors associated with post-MBS OSA remission. Setting: Tertiary-care children's hospital. Methods: We conducted a retrospective chart review of 81 patients pre-MBS with OSA assessments done between June 2017 to September 2020 to collect demographic characteristics; co-morbidities; polysomnography (PSG) results, if indicated; and weight data. Chi-square or Mann-Whitney tests compared baseline characteristics and surgical outcomes by pre-MBS OSA status. McNemar's test or t tests assessed differences in baseline characteristics, stratified by remission versus no remission of OSA. Results: The patients were 71% female, had an average age of 16.9 ± 2.0 years, and had a mean body mass index (BMI) of 47.9 ± 7.3 kg/m2. Half (50%) of the patients were Hispanic and 20% had type 2 diabetes. The OSA prevalence, defined as an Obstructive Apnea Hypopnea Index (OAHI) score ≥5, was 54% pre-MBS (n = 44), with 43% having severe OSA (OAHI > 30). Those with OSA were older (17.3 versus 16.4 yr, respectively; P = .05), more likely to be male (79% versus 42%, respectively; P = .022), and had higher baseline weights (142.0 versus 126.4 kg, respectively; P = .001) than those without OSA. Of the 23 patients with a post-MBS PSG result (average 5 mo post MBS), 15 (66%) had remission of OSA. Patients with OSA remission had a lower average pre-MBS BMI (46.0 versus 57.7 kg/m2, respectively; P < .001) and weight (132.9 versus 172.6 kg, respectively; P = .002) but no significant differences in percentage weight loss through 12 months post MBS versus those with continued OSA. Conclusion: The OSA prevalence in an adolescent MBS population was higher than that in the general adolescent population with severe obesity. Remission of OSA was correlated with lower pre-MBS BMI and weight, but not weight loss within the first year post-MBS.

Original languageEnglish (US)
Pages (from-to)711-717
Number of pages7
JournalSurgery for Obesity and Related Diseases
Issue number4
StatePublished - Apr 2021
Externally publishedYes


  • Adolescents
  • Bariatric surgery
  • OSA
  • Sleep
  • Weight loss

ASJC Scopus subject areas

  • Surgery


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