Introduction: Outcomes of bariatric surgery for super obese Asians are not well reported. We aimed to compare short-term outcomes of laparoscopic sleeve gastrectomy (LSG) in Asian patients with body mass index (BMI) <47.5 kg/m2 to those with BMI ≥47.5 kg/m2.
Materials and methods: A total of 272 patients from Singapore university hospital who underwent LSG from 2008 to 2015 with a follow-up of at least 6 months were included in the study. Primary endpoint was weight loss at 1-year and 3-years. Morbid obesity (Group 1, G1) was defined as BMI <47.5 kg/m2 and super obesity (Group2, G2) was defined as BMI ≥47.5 kg/m2.
Results: There were 215 patients in G1 and 57 patients in G2 (mean preoperative weight: 107.3 kg and 146.8 kg; mean follow-up: 27.9 and 26.8 months, respectively). Mean total weight loss at 3-year of 41.9 kg for G2 was significantly higher (P = 0.003) than 27.2 kg for G1. Mean percentage excess weight loss (EWL) did not differ at 3-years. There was no difference in operating time, blood loss, length of stay, 30-day morbidity and readmission. There were no conversions and mortality in both groups. Remission of herpertension (P - 0.001) and dyslipidaemia (P = 0.038) were significantly associated with achieving EWL percentage (%EWL) >50 in G1.
Conclusion: LSG is an equally safe and effective operation in Asians with BMI ≥47.5 kg/m2 when compare to patients with BMI <47.5 kg/m2 in achieving significant weight loss and improvement in comorbidities. Super obese lose more weight but have lower %EWL.