Analysis of the factors that affect the diagnostic yield of capsule endoscopy in patients with obscure gastrointestinal bleeding

Beom Jae Lee, Hoon Jai Chun, Ja Soul Koo, Bora Keum, Sang Hoon Park, Du Rang Kim, Yong Dae Kwon, Yong Sik Kim, Yoon Tae Jean, Hong Sik Lee, Soon Ho Um, Sang Woo Lee, Jai Hyun Choi, Chang Duck Kim, Ho Sang Ryu

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    6 Citations (Scopus)


    BACKGROUND/AIMS: Capsule endoscopy (CE) has become a valuable modality for the detection of small bowel lesions. The usefulness of CE for obscure gastrointestinal (GI) bleeding has been established with an overall diagnostic yield of 60%. It is unknown whether CE is of equal value in all the patients or of greater benefit in selected groups in Korea. We evaluated the factors that affect the diagnostic yields of CE in patients with obscure GI bleeding. METHODS: CE was performed in 126 consecutive patients [74 men and 52 women mean age 52.5 years (25-75 yrs), 23 with active bleeding] with obscure GI bleeding between September 2002 and July 2004. Patients were divided into two groups: those with documented bleeding lesions and those with non specific CE findings. We analyzed the clinical characteristics and other parameters that influenced the diagnostic yields of CE. RESULTS: A definite or probable cause for obscure GI bleeding was found in 69% (80/116) of the patients. NSAID induced ulcer (16.4%) and angiodysplasia (12.1%) were the most common diagnoses. In patients with active bleeding, the diagnostic yield was significantly greater than that of the patients with occult bleeding (80% vs. 68.3%, p<0.05). However, there was no significant difference in parameters between patients with abnormal CE and those with normal CE in respect to gender, age, previous bleeding history, need for transfusion, cecum imaging, and bowel preparation. CONCLUSIONS: The diagnostic yield of CE in patients with obscure GI bleeding is 69%. It is significantly higher in patients with active bleeding.

    Original languageEnglish
    Pages (from-to)79-84
    Number of pages6
    JournalThe Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi
    Issue number2
    Publication statusPublished - 2007 Feb

    ASJC Scopus subject areas

    • Medicine(all)


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