Zilong Yue,1,2,* Yan Jin,1,3,* Hui Sha,1,* Qin Wu,1,* Lele Li,1 Yabin Xia,1 Kaifeng Hu1 

1Department of Gastrointestinal Surgery, The First Affiliated Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, People’s Republic of China; 2General Surgery Department, Guoyang Branch of Anhui Provincial Hospital, Bozhou, Anhui, People’s Republic of China; 3Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of China

*These authors contributed equally to this work

Correspondence: Kaifeng Hu, Department of Gastrointestinal Surgery, The First Affiliated Yijishan Hospital of Wannan Medical College, Wuhu, No. 2, Zheshan West Road, Anhui, 241001, People’s Republic of China, Tel +86-13655537677, Email kaifenghu76@163.com

Purpose: Investigating the therapeutic efficacy of Laparoscopic Sleeve Gastrectomy (LSG) in low BMI (30– 35 kg/m2) patients with obesity, and exploring the correlation between patients’ preoperative BMI and postoperative weight loss.
Methods: Comparing the weight loss, remission of comorbidities, occurrence of complications, and quality of life among the different BMI patients who underwent LSG. Analyzing the relationship between BMI and percentage of excess weight loss (%EWL) by using Spearman correlation analysis and linear regression analysis.
Results: The %EWL at 12 months after the surgical procedure was (104.26± 16.41)%, (90.36± 9.98)%, and (78.30± 14.64)% for patients with Class I, II, and III obesity, respectively, P< 0.05. Spearman correlation coefficients between %EWL and BMI at 1, 3, 6, and 12 months after surgery were R=− 0.334 (P< 0.001), R=− 0.389 (P< 0.001), and R=− 0.442 (P< 0.001), R=− 0.641 (P< 0.001), respectively. The remission of hypertension, diabetes and dyslipidaemia did not differ significantly between groups (P> 0.05).
Conclusion: Individuals with obesity for varying BMI can experience favorable outcomes following LSG surgery. It is advisable to consider LSG treatment for patients with Class I obesity.

Keywords: laparoscopic sleeve gastrectomy, body mass index, percentage of excess weight loss