Short-Term Effects of Bariatric Surgery on Body Composition Assessed by Dual-Energy X-Ray Absorptiometry
- VernacularTitle:双能X线吸收测量法评价减重手术对身体成分的短期影响
- Author:
He SUN
1
;
Lingling SUN
;
Shinong PAN
;
Linru LI
;
Qi LI
;
Lei WANG
;
Yong WANG
Author Information
1. 中国医科大学附属第四医院放射科
- Keywords:
obesity;
bariatric surgery;
dual-energy X-ray absorptiometry;
body composition
- From:
Journal of China Medical University
2019;48(3):260-264
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the short-term effects of bariatric surgery on body composition. Methods Fifty-seven patients who underwent bariatric surgery were assessed by dual-energy x-ray absorptiometry (DEXA) before surgery, and 1 and 3 months after surgery. The body composition indexes of whole body and different regions were compared. Results The body mass index (BMI) decreased by 10.61％ and 18.51％, and the lean mass (LM) by 13.22％ and 14.35％ at 1 and 3 months after surgery, respectively. The A/G far mass (FM) decreased significantly 3 months after surgery (P ＜ 0.05). The bone mineral density (BMD) of the spine increased, but that of the pelvis decreased at 1 and 3 months after the operation, and a reduction was observed in the BMD of the whole body by 1.23％ and 1.45％, respectively (P ＜ 0.05). Compared to the baseline, the bone mineral content (BMC) of the spine, pelvis, and whole body increased at 1 and 3 months post-surgery, with a statistically significant difference (P ＜ 0.05). The FM of the whole body (9.52％ and 22.77％) and four regions (legs, trunk, android, and gynoid) reduced. A significant loss of FM (P ＜ 0.05) was observed in the android region by 15.80％ and 31.86％ at the two follow-ups. Conclusion Bariatric surgery can effectively reduce the patient's BMI and FM in the short term, and promotes the redistribution of fat; however, it may be accompanied by a reduction in LM, while the BMD and BMC change trend of pelvis and whole body are opposite.
