0876 Obstructive Sleep Apnea, Low PAP Use, and Daytime Sleepiness are Associated with Weight Regain Following Bariatric Surgery in Adolescents with Severe Obesity

Abstract

Introduction: Significant weight loss is seen following bariatric surgery, leading to an ameliorative effect on obesity-related comorbidities such as OSA. Weight loss maintenance is a priority, and identifying factors that may be associated with weight loss outcomes following bariatric surgery is of high importance. The current study examined whether OSA symptoms and PAP therapy were associated with weight outcomes following bariatric surgery in adolescents. Methods: Participants from the Teen-LABS Study, which follows adolescents undergoing bariatric surgery were examined. Demographic and anthropometric data, OSA diagnosis, and PAP prescription and self-reported usage information were assessed 6 months before surgery. Pediatric Sleep Questionnaire (PSQ) responses were utilized from baseline to 48 months post-surgery. All analyses were adjusted for time, age, sex, surgery type, and ethnicity. Results: 242 adolescents (76% female, 72% White, age at surgery = 16.6 [1.6] years) were included. 57% had a diagnosis of OSA at pre-surgical baseline, and 56% of adolescents with OSA reported PAP use at pre-surgery. BMI increase over time from year 1-4 postsurgery was 11% more for those with high PSQ severity compared to those with low PSQ severity (p = 0.01). Those with pre-surgical OSA that reported using PAP “often” or “always” at baseline had an 8% lower increase in BMI from year 1-4 post-surgery compared to those that reported using PAP “rarely” or “sometimes” at baseline (p = 0.004). Finally, endorsing daytime sleepiness on the PSQ was associated with a 11% greater increase in BMI during years 1-4 postsurgery (p = 0.01). Conclusion: OSA and daytime sleepiness may be associated with greater weight regain following bariatric surgery in adolescents. Adherence to PAP therapy pre-surgery may be a protective factor in preventing or reducing weight regain following surgery. Daytime sleepiness may be an effect of OSA, or due to the insufficient sleep that is prevalent among adolescents. Research is needed to examine the impact of additional aspects of sleep health such as duration, timing, and quality on health outcomes, as well as the impact of PAP adherence and sleep interventions on weight regain following bariatric surgery in adolescents with severe obesity.