Factors influencing the choice between laparoscopic sleeve gastrectomy and Roux-en-Y gastric bypass

While laparoscopic sleeve gastrectomy (LSG) continues to be the most commonly performed bariatric operation, several variables influence surgeons' practice patterns and patients' decision-making in the type of bariatric procedure to perform. The aim of this study was to evaluate patient factors that influence the decision between laparoscopic Roux-en-Y gastric bypass (LRYGB) versus LSG.

The Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) database was queried for patients undergoing LSG and LRYGB between 2015 and 2017. Univariate analysis and multivariate logistic regression were used to evaluate factors associated with performing LRYGB compared to LSG.

A total of 252,117 (72.3%) LSG and 96,677 (27.7%) LRYGB cases were identified. Patients undergoing LSG were younger (44.3 ± 12.0 vs 45.2 ± 11.8 years; p < 0.01) and had a lower body mass index (BMI; 45.1 ± 7.8 vs 46.2 ± 8.1 kg/m²; p < 0.01). Most of the patients were females (79.4%), white (73.0%), with an American Society of Anesthesiology (ASA) class ≤ 3 (96.4%). The factors associated with undergoing LRYGB compared to LSG were diabetes mellitus, gastroesophageal reflux disease, BMI ≥ 50 kg/m², ASA class > 3, obstructive sleep apnea, hypertension, and hyperlipidemia. However, patients with kidney disease, black race, chronic steroid use, age ≥ 60 years, recent smoking history, chronic obstructive pulmonary disease, and coronary artery disease were more likely to undergo LSG.

The decision to perform LRYGB is primarily driven by obesity-associated comorbidities and higher BMI, whereas LSG is more likely to be performed in higher risk patients.