Small bowel enteroscopy and intraoperative enteroscopy for obscure gastrointestinal bleeding

Area of Science:

• Gastroenterology
• Endoscopy
• Surgical Diagnostics

Background:

• Obscure gastrointestinal (GI) bleeding diagnosis often requires small bowel evaluation.
• Intraoperative endoscopy (IOE) is considered definitive for complete small bowel assessment.
• Small bowel enteroscopy (SBE) offers a non-surgical option but faces limitations like incomplete intubation.

Purpose of the Study:

• To compare the diagnostic yield and effectiveness of SBE and IOE in patients with obscure GI bleeding.
• To evaluate the comparability of SBE and IOE in terms of insertion depth and detection of small vascular ectasias.
• To determine the optimal sequence of SBE and surgical intervention for managing obscure GI bleeding.

Main Methods:

• Twenty-three patients with a history of obscure GI bleeding underwent 25 SBE examinations.
• These patients subsequently underwent 25 IOE examinations during surgical exploration for persistent bleeding.
• Diagnostic findings from SBE and IOE were compared.

Main Results:

• SBE and IOE findings were concordant in 77% (17/22) of examinations.
• Both SBE and IOE demonstrated comparable depth of insertion and ability to detect small vascular ectasias.
• Limited visibility and the transient nature of lesions affected the diagnostic accuracy of both procedures.
• Combined SBE and IOE techniques are expected to achieve long-term bleeding control in 55% of patients.

Conclusions:

• SBE and IOE are comparable diagnostic tools for obscure GI bleeding, with similar detection rates for vascular ectasias.
• Performing SBE prior to surgery is recommended, as diffuse ectasias identified by SBE may negate the need for operative intervention.
• While effective, both methods can miss pathologies due to visibility constraints and the ephemeral nature of some lesions.