Journal
WORLD JOURNAL OF GASTROENTEROLOGY
Volume 29, Issue 7, Pages 1173-1193Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.3748/wjg.v29.i7.1173
Keywords
Endoscopy; Surgery; Bariatric; Gastrointestinal; Fistulas; Leaks
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Post-surgical leaks and fistulas are common and difficult to treat complications of bariatric surgery. Endoscopic therapy plays an increasingly important role in managing these conditions, with early diagnosis and initiation of treatment being crucial for success. Different endoscopic techniques with various mechanisms of action are available, and treatment should be individualized based on patient and defect characteristics. Although standardized treatment algorithms are lacking, this narrative review aims to provide a summary of current scientific evidence and make recommendations for the best endoscopic approach.
Post-surgical leaks and fistulas are the most feared complication of bariatric surgery. They have become more common in clinical practice given the increasing number of these procedures and can be very difficult to treat. These two related conditions must be distinguished and characterized to guide the appropriate treatment. Leak is defined as a transmural defect with communication between the intra and extraluminal compartments, while fistula is defined as an abnormal communication between two epithelialized surfaces. Traditionally, surgical treatment was the preferred approach for leaks and fistulas and was associated with high morbidity with significant mortality rates. However, with the development of novel devices and techniques, endoscopic therapy plays an increasingly essential role in managing these conditions. Early diagnosis and endoscopic therapy initiation after clinical stabilization are crucial to success since clinical success rates are higher for acute leaks and fistulas when compared to late and chronic leaks and fistulas. Several endoscopic techniques are available with different mechanisms of action, including direct closure, covering/diverting or draining. The treatment should be individualized by considering the characteristics of both the patient and the defect. Although there is a lack of high-quality studies to provide standardized treatment algorithms, this narrative review aims to provide a summary of the current scientific evidence and, based on this data and our extensive experience, make recommendations to help choose the best endoscopic approach for the management of post-bariatric surgical leaks and fistulas.
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