Selection of Bypass vs Sleeve for the Management of Type-2 Diabetes in Severely Obese: Could Ethnicity Play a Role?

The Choice of Gastric Bypass or Sleeve Gastrectomy for Patients Stratified by Diabetes Duration and Body Mass Index (BMI) level: Results from a National Registry and Meta-analysis

PURPOSE

To determine whether sleeve gastrectomy (SG) or Roux-en-Y gastric bypass (RYGB) should be the optimal choice in patients stratified by diabetes duration and body mass index (BMI) level.

METHODS

Classification tree analysis was performed to identify the influential factors for surgical procedure selection in real setting. Meta-analyses stratified by influential factors were conducted to compare the complete diabetes remission rates between SG and RYGB. The cost-effectiveness analysis was performed when results from meta-analysis remain uncertain.

RESULTS

Among 3198 bariatric procedures in China, 824 (73%) SGs and 191 (17%) RYGBs were performed in patients with T2DM. Diabetes duration with a cutoff value of 5 years and BMI level with 35.5 kg/m² were identified as the influential factors. For patients with diabetes duration > 5 years, RYGB showed a significant higher complete diabetes remission rate than SG at 1 year: 0.52 (95% confidence interval (CI): 0.46-0.58) versus 0.36 (95% CI: 0.30-0.42). For patients with diabetes duration ≤ 5 years and BMI ≥ 35.5 kg/m², there was no significant difference between 2 procedures: 0.57 (95% CI: 0.43-0.71) for SG versus 0.66 (95% CI: 0.62-0.70) for RYGB. The cost-effectiveness ratios of SG and RYGB were 244.58 and 276.97 dollars per QALY, respectively.

CONCLUSIONS

For patients with diabetes duration > 5 years, RYGB was the optimal choice with regard to achieving complete diabetes remission at 1 year after surgery. However, for patients with diabetes duration ≤ 5 years and BMI ≥ 35.5 kg/m², SG appeared to provide a cost-effective choice.

Factors Associated with Weight Loss After Metabolic Surgery in a Multiethnic Sample of 1012 Patients

BACKGROUND

Metabolic surgery is the most effective method for weight loss in the long-term treatment of morbid obesity and its comorbidities. The primary aim of this study was to examine factors associated with percent total weight loss (%TWL) after metabolic surgery among an ethnically diverse sample of patients.

METHODS

A retrospective review was performed on 1012 patients who underwent either a sleeve gastrectomy (SG) or Roux-en-Y gastric bypass (RYGB) at our institution between January 2008 and June 2015.

RESULTS

African Americans had a lower %TWL than non-Hispanic/Latino Whites at 6, 9, 12, 18, and 48 months. At all timeframes, there was a negative association between pre-surgery TWL and %TWL after surgery. Female sex was negatively associated with %TWL at 3 months only. Higher initial BMI was also associated with greater post-operative %TWL at 18, 24 and 36 months. Older patients had lower %TWL at 6, 9, 12 and 24 months post-surgery. Patients who received RYGB had greater %TWL than those who received SG at 3, 6, 9, 12, 24 and 36 months.

CONCLUSIONS

African Americans had a lower %TWL than non-Hispanic/Latino Whites at most time points; there were no other significant race/ethnicity or sex differences. BMI (greater initial BMI), age (lower) and RYGB were associated with a greater post-operative %TWL at certain post-surgery follow-up time points. A limitation of this study is that there was missing data at a number of time points due to lack of attendance at certain follow-up visits.

Superior socioeconomic status in patients with type 2 diabetes having gastric bypass surgery: a case-control analysis of 10 642 individuals

INTRODUCTION

The incidence of type 2 diabetes mellitus (T2DM) is increasing, in parallel with the epidemic of obesity. Although bariatric surgery, which profoundly affects T2DM, has increased 10-fold since the millennium, only a fraction of diabetics is offered this treatment option.

OBJECTIVE

To investigate the association between clinical and socioeconomic factors in selecting patients with T2DM for bariatric surgery in a publicly financed healthcare system.

RESEARCH DESIGN AND METHODS

Cohort study using prospectively registered data from two nationwide quality registers, the Scandinavian Obesity Surgery Registry (SOReg) and the Swedish National Diabetes Register (NDR), and data from two government agencies. An age, gender and body mass index-matched case-control analysis containing 10 642 patients with T2DM was performed.

RESULTS

Patients with T2DM having bariatric surgery had a higher education level (upper secondary school or college level, OR 1.42% and 95% CI (1.29 to 1.57) and 1.33 (1.18 to 1.51), respectively) as well as a higher income (OR 1.37 (1.22 to 1.53) to 1.94 (1.72 to 2.18) for quartile 2-4) than non-operated patients. Operated patients were more often married or had been married (OR 1.51 (1.37 to 1.66) and 1.65 (1.46 to 1.86), respectively) as well as natives (OR 0.84 (0.73 to 0.95) if born in the rest of Europe). Groups did not differ regarding relevant laboratory data and present medication, nor in former in-patient diagnoses.

CONCLUSION

Despite similar clinical data, superior socioeconomic status was associated with increased rate of bariatric surgery in patients with T2DM. We believe that this warrants actions, for example concerning referral patterns.

Is sleeve gastrectomy overcriticized? A single-center Indian experience with 5-year follow-up results

BACKGROUND

Bariatric surgery has seen a sharp rise in numbers worldwide in the last decade. Being a popular procedure, sleeve gastrectomy (SG) has been widely studied over the years for its efficacy, potential for weight regain, metabolic impact, and de novo gastroesophageal reflux disease (GERD).

OBJECTIVES

To evaluate clinical outcomes of laparoscopic SG after 5 years of follow-up in terms of weight loss, co-morbidity resolution, and GERD.

SETTING

The study was performed in a center of excellence in bariatric surgery in India.

METHODS

All patients who underwent laparoscopic SG from January 2012 to April 2013 were included in the study. Their demographic, preoperative, and postoperative data were prospectively maintained in Microsoft Excel and analyzed statistically.

RESULTS

Two hundred eighteen patients underwent SG in 2012-2013. Patients had a preoperative body mass index of 45.8 ± 9.5 kg/m² (mean ± standard deviation) and excess weight of 54.1 ± 25.6 kg. Percent excess weight loss was 87.6% ± 28.9% at 1 year, 77.2% ± 29.3% at 3 years, and 69.1% ± 27.8% at 5 years. Percent total weight loss at 1 year was 35.5% ± 7.6%, 31.4% ± 9.1% at 3 years, and 29.2% ± 9.8% at 5 years. At 5 years, 11 of 25 (44%) showed complete diabetic remission and 5 of 25 (20%) showed partial remission. De novo GERD was seen in 24 of 153 (15.7%) patients.

CONCLUSION

Our study reflects good outcomes after SG in terms of weight loss and diabetes resolution at 5-year follow-up, though GERD remains a matter of concern.