Preoperative weight loss was observed in 50% of adolescents, with an 8-year postoperative BMI change of −21% in those who lost weight and −15% in those who gained weight.
Does preoperative weight change predict postoperative BMI reduction in adolescents undergoing bariatric surgery?
Preoperative weight change in adolescents preparing for bariatric surgery does not significantly predict postoperative BMI loss up to 8 years.
Absolute Event Rate: 0% vs 0%
ABSTRACT Objective Preoperative weight changes, predictors of weight changes, and subsequent implications on postoperative BMI reduction in adolescents preparing for bariatric surgery (MBS) have not been well described. Methods Teen–Longitudinal Assessment of Bariatric Surgery (Teen‐LABS) consortium (prospective, observational MBS study at five centers from 2007 to 2011) participants who completed the preoperative phase within 3–9 months of initial visit were included in this analysis ( n = 123). Participants were categorized into preoperative weight groups: > 1% loss, stable, or > 1% gain. Demographic, anthropometric, socioeconomic, medical, and behavioral data were analyzed. Postoperative percent BMI loss at 1, 5, and 8 years by weight group was compared. Results Preoperatively, 50% of participants lost weight, 20% remained stable, and 30% gained weight. The mean percent weight change by group was −4.2% (standard deviation SD 2.9%), +0.02% (SD 0.6%), and +5.2% (SD 5.3%), respectively. Eight‐year postoperative BMI change was −21% (lost) and −26% (stable), compared to −15% among those who gained weight preoperatively ( p = 0.11). No differences in preoperative weight‐related behaviors were observed between groups. Conclusions Most adolescents preparing for MBS maintained ±5% of their baseline weight. No statistically significant differences in postoperative BMI loss or factors predicting preoperative weight change were identified. Trial Registration ClinicalTrials.gov identifier: NCT00474318
Ogle et al. (Thu,) reported a other. Preoperative weight loss was observed in 50% of adolescents, with an 8-year postoperative BMI change of −21% in those who lost weight and −15% in those who gained weight.