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Factors associated with reduced insertion depth at double balloon enteroscopy: a retrospective, multivariate analysis
Alberto Murino1, Masanao Nakamura1, Edward J Despott1
1Wolfson Unit for Endoscopy, St. Mark's Hospital and Academic Institute, Imperial College London, UK.
Summary
Achieving deep small bowel insertion during double balloon enteroscopy is influenced by several factors. History of abdominal surgery, insertion route, gender, and enteroscope type significantly impact maximal insertion depth.
Area of Science:
- Gastroenterology
- Endoscopy
Background:
- Deep small bowel intubation is a challenge in double balloon enteroscopy (DBE).
- Identifying factors that influence insertion depth is crucial for optimizing procedures.
Purpose of the Study:
- To identify and analyze factors affecting maximal insertion depth during double balloon enteroscopy.
Main Methods:
- Retrospective analysis of DBE procedures.
- Factors assessed included surgical history, insertion route, enteroscope type, patient age, anesthesia, and gender.
- Maximal depth of insertion was the primary outcome measure.
Main Results:
- Multivariate analysis revealed significant associations between maximal insertion depth and history of abdominal-pelvic surgery (P<0.001), rectal approach (P=0.011), gender (P=0.02), and use of a therapeutic enteroscope (P=0.047).
- Mean maximal depth decreased significantly with an increasing number of influencing factors present.
Conclusions:
- Maximal insertion depth in DBE is significantly influenced by prior abdominal-pelvic surgery, the chosen insertion route, patient gender, and the type of enteroscope utilized.
- These findings can aid in predicting and potentially improving deep small bowel intubation success rates.

