Technical Factors in Sleeve Gastrectomy Affect Weight Loss and GERD Outcomes

Overview

This multinational registry study analyzed how technical variations in sleeve gastrectomy (SG) influence weight loss and new-onset gastroesophageal reflux disease (GERD) over 2 years. Key surgical factors such as bougie size and gastric resection distances were associated with differences in weight reduction and GERD symptoms.

Background

Sleeve gastrectomy is the most commonly performed bariatric procedure worldwide, aimed at improving obesity-related health outcomes and quality of life. However, weight loss and adverse effects like GERD vary across institutions, potentially due to differences in surgical technique. Despite international guidelines, evidence on how technical details impact outcomes remains limited. This study used data from national registries in Norway, Sweden, and the Netherlands to explore these associations.

Data Highlights

The study included patients undergoing primary SG with bougie sizes 28–40 Ch, pylorus resection distance ≤ 6 cm, and angle of His resection distance ≤ 3 cm. Weight loss was measured as percent total weight loss (%TWL) at 2 years, and GERD was defined by new use of acid reducing medication (ARM). Data capture rates were approximately 99% in Sweden, 70% in Norway, and 100% in the Netherlands. Only patients with 2-year follow-up data between 640–820 days were analyzed to ensure consistency.

Key Findings

• Greater extent of gastric resection (shorter distance from pylorus and angle of His) correlated with increased weight loss at 2 years post-SG.
• Smaller bougie sizes were associated with improved weight reduction outcomes.
• Technical variations in SG influenced the incidence of de novo GERD, as indicated by new use of ARM at 2 years.
• Differences in weight loss and GERD prevalence were observed across institutions and countries despite similar patient demographics.
• Registry data quality and capture rates were high, supporting the reliability of findings.

Clinical Implications

Optimizing technical aspects of sleeve gastrectomy, such as selecting appropriate bougie size and extent of gastric resection, may enhance weight loss outcomes while balancing the risk of GERD development. Surgeons should consider these factors during procedure planning and patient counseling. Monitoring for GERD symptoms postoperatively remains important given the variability in reflux outcomes related to surgical technique.

Conclusion

Technical factors in sleeve gastrectomy significantly influence both weight loss and the risk of new-onset GERD. Tailoring surgical technique may improve patient outcomes and reduce adverse effects associated with this common bariatric procedure.

References

1. Author/Source/Year -- Technical Factors in Sleeve Gastrectomy Influence Weight Reduction and Gastroesophageal Reflux Symptoms