Diabetes improvement and resolution following laparoscopic vertical sleeve gastrectomy (LVSG) versus laparoscopic Roux-en-Y gastric bypass (LRYGB) procedures: a systematic review of randomized controlled trials.
The prevalence of type 2 diabetes is growing in both developed and developing countries and is strongly linked with the prevalence of obesity. Bariatric surgical procedures such as laparoscopic vertical sleeve gastrectomy (LVSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB) are increasingly being utilized to manage related comorbid chronic conditions, including type 2 diabetes.



A systematic review of randomized controlled trials (RCTs) was undertaken using the PRISMA guidelines to investigate the postoperative impact on diabetes resolution following LVSG versus LRYGB.



Seven RCTs involving a total of 732 patients (LVSG n = 365, LRYGB n = 367) met inclusion criteria. Significant diabetes resolution or improvement was reported with both procedures across all time points. Similarly, measures of glycemic control (HbA1C and fasting blood glucose levels) improved with both procedures, with earlier improvements noted in LRYGB that stabilized and did not differ from LVSG at 12 months postoperatively. Early improvements in measures of insulin resistance in both procedures were also noted in the studies that investigated this.



This systematic review of RCTs suggests that both LVSG and LRYGB are effective in resolving or improving preoperative type 2 diabetes in obese patients during the reported 3- to 5-year follow-up periods. However, further studies are required before longer-term outcomes can be elucidated. Areas identified that need to be addressed for future studies on this topic include longer follow-up periods, standardized definitions and time point for reporting, and financial analysis of outcomes obtained between surgical procedures to better inform procedure selection.
Department of Nutrition and Dietetics, Royal Brisbane and Women's Hospital, Herston, QLD, 4019, Australia.|Department of Human Movements and Nutrition, University of Queensland, Brisbane, QLD, Australia.
Emma
E
Osland
Institute of Mathematical Sciences, University of Malaya, Kuala Lumpur, Malaysia.
Rossita Mohamad
RM
Yunus
School of Agricultural, Computational and Environmental Sciences, International Centre for Applied Climate Sciences and Centre for Health Sciences Research, University of Southern Queensland, Toowoomba, QLD, Australia.
Shahjahan
S
Khan
Sunnybank Obesity Centre and South East Queensland Surgery (SEQS), Suite 9, McCullough Centre, 259 McCullough Street, Sunnybank, QLD, 4109, Australia.
Breda
B
Memon
School of Agricultural, Computational and Environmental Sciences, International Centre for Applied Climate Sciences and Centre for Health Sciences Research, University of Southern Queensland, Toowoomba, QLD, Australia. mmemon@yahoo.com.|Sunnybank Obesity Centre and South East Queensland Surgery (SEQS), Suite 9, McCullough Centre, 259 McCullough Street, Sunnybank, QLD, 4109, Australia. mmemon@yahoo.com.|Mayne Medical School, School of Medicine, University of Queensland, Brisbane, QLD, Australia. mmemon@yahoo.com.|Faculty of Health Sciences and Medicine, Bond University, Gold Coast, QLD, Australia. mmemon@yahoo.com.|Faculty of Health and Social Science, Bolton University, Bolton, Lancashire, UK. mmemon@yahoo.com.
Muhammed Ashraf
MA
Memon
D050110:Bariatric Surgery / Q000379:methods; D001786:Blood Glucose / Q000378:metabolism*; D003924:Diabetes Mellitus, Type 2 / Q000150:complications / Q000378:metabolism*; D005743:Gastrectomy / Q000379:methods*; D015390:Gastric Bypass / Q000379:methods*; D006801:Humans; D007333:Insulin Resistance; D010535:Laparoscopy / Q000379:methods; D009767:Obesity, Morbid / Q000150:complications / Q000601:surgery*; D011184:Postoperative Period; D015995:Prevalence; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome
D001786:Blood Glucose
Bariatric surgery; Diabetes; Laparoscopic; Roux-en-Y gastric bypass; Sleeve gastrectomy; Systematic review