Efficacy of Wireless Capsule Endoscopy and CT Enterography in Obscure Gastrointestinal Bleeding

Efficacy of Wireless Capsule Endoscopy and CT Enterography in Obscure Gastrointestinal Bleeding : Prospective Blinded Comparative Study

The purpose of this study is to compare the efficacy between video capsule endoscopy and CT enterography in diagnosis of obscure gastrointestinal bleeding.

All adult patients with obscure gastrointestinal bleeding will undergo both video capsule endoscopy and CT enterography. The interval between two tests will be less than 1 month. The capsule reading gastroenterologist and the CT reading radiologist are blinded to each others' results.

Inclusion Criteria:

• patients who present with passing melena or hematochezia or have iron deficiency anemia
• no lesion found on both esophagogastroduodenoscopy and colonoscopy
• age at least 18 years

Exclusion Criteria:

• allergy to iodinated intravenous contrast
• chronic kidney disease stage at least 3 patients who do not on regular dialysis
• suspected small bowel obstruction