Clinical Report: Endoluminal Vacuum Therapy for Postoperative Leaks in Bariatric Surgery

Overview

This single-center study evaluates the efficacy of endoluminal vacuum therapy (EVT) in managing anastomotic and staple-line leaks following metabolic bariatric surgery (MBS). EVT demonstrated promise as a minimally invasive therapeutic option, particularly in complex cases and revisional surgeries, contributing to improved perioperative outcomes.

Background

Metabolic bariatric surgery is the most effective treatment for obesity, with increasing global demand leading to highly standardized and safe procedures. Despite low incidence rates of anastomotic and staple-line leaks (1.5–5.6%), these complications significantly impact patient outcomes. Patients with obesity are at higher risk for perioperative complications due to comorbidities, necessitating effective management strategies. Endoscopic vacuum therapy has emerged as a promising minimally invasive alternative to early surgical intervention for managing postoperative leaks.

Data Highlights

The study included patients treated with EVT for leaks after MBS between January 2016 and August 2023 at a high-volume center. EVT sponges were replaced every 3–4 days with vacuum settings of −60 to −80 mmHg. Nutritional support was provided parenterally during EVT and enterally after SEMS placement. Therapeutic success was defined by proper EVT placement and leak closure. The study also assessed ICU admission rates, hospital stay duration, and complications related to EVT.

Key Findings

• EVT was effectively used to manage both anastomotic leakage (AL) and staple-line leakage (SLL) following primary and revisional MBS procedures.
• Leakage was classified as acute, early, late, or chronic based on time from surgery, guiding therapeutic decisions.
• EVT placement techniques included overtube and pull-through methods, allowing precise sponge positioning adjacent to the leak.
• EVT was replaced every 3–4 days with continuous vacuum pressure, facilitating drainage and promoting healing.
• EVT served as a standalone therapy or combined with diagnostic laparoscopy and self-expanding metal stent (SEMS) therapy depending on individual patient needs.
• Multidisciplinary management including nutrition support and regular team discussions optimized patient outcomes.

Clinical Implications

EVT offers a minimally invasive, effective treatment modality for postoperative leaks after bariatric surgery, potentially reducing the need for extensive surgical revisions. Precise endoscopic placement and regular sponge changes are critical for success. Multidisciplinary care, including nutritional support and individualized therapeutic strategies, enhances recovery and may improve perioperative outcomes in this high-risk patient population.

Conclusion

Endoluminal vacuum therapy is a valuable tool in the management of postoperative leaks following metabolic bariatric surgery, demonstrating efficacy and safety in a specialized high-volume center. Its integration into multidisciplinary care pathways can improve patient outcomes and reduce complication-related morbidity.

References

1. Rosenthal et al. 2018 -- Classification of Leakage after Bariatric Surgery
2. Studies on EVT in Upper GI and Colorectal Surgery (2016-2023)
3. MUV Bariatric Center Case Series (2016-2023)