Obscure gastrointestinal bleeding: single centre experience of capsule endoscopy

Area of Science:

• Gastroenterology
• Medical Diagnostics
• Endoscopy

Background:

• Obscure gastrointestinal bleeding (OGIB) presents diagnostic challenges.
• Capsule endoscopy (CE) is increasingly used for OGIB diagnosis globally.
• Optimal timing for CE to maximize diagnostic yield requires further study.

Purpose of the Study:

• To evaluate the diagnostic yield of capsule endoscopy (CE) in identifying bleeding sources in patients with OGIB.
• To analyze the relationship between CE timing and diagnostic success in OGIB cases.
• To assess the safety and accuracy of CE for OGIB.

Main Methods:

• Retrospective review of patient records for individuals undergoing CE for OGIB from May 2006 to May 2011.
• Analysis of OGIB type (occult, overt), CE findings, complications, and timing relative to bleeding onset.
• Assessment of visualization completeness and capsule retention rates.

Main Results:

• CE detected lesions in 71.1% of 346 OGIB patients; 59.5% had definitive bleeding sources identified.
• Common findings included angiodysplasia, Crohn's disease-related lesions, NSAID effects, and neoplasms.
• Complete small bowel visualization was achieved in 89.9% with a 1.4% capsule retention rate.

Conclusions:

• Capsule endoscopy is a safe, comfortable, and highly accurate method for diagnosing the source of obscure gastrointestinal bleeding.
• CE significantly aids in identifying lesions responsible for OGIB, improving diagnostic outcomes.
• Further research into optimal CE timing may further enhance its diagnostic yield in OGIB management.