Abstract
Pouchitis is a common complication after ileal pouch-anal anastomosis. Diagnosis is based on the Pouch Disease Activity Index, which comprises clinical symptoms, endoscopic appearance, and histologic confirmation. A Pouch Disease Activity Index > or = 7 confirms pouchitis. Fecal lactoferrin is a marker of intestinal inflammation, which can aid in the diagnosis of pouchitis. The IBD EZ VUE test is a simple, rapid, noninvasive test for fecal lactoferrin. Our goal was to study the sensitivity and specificity of this test in the diagnosis of pouchitis. Consecutive patients with pouch dysfunction were recruited from October 2005 to July 2006. A fecal sample was collected before calculation of the Pouch Disease Activity Index. An IBD EZ VUE test was performed on each fecal sample and the results correlated with the diagnosis of pouchitis to calculate sensitivity and specificity of the IBD EZ VUE test. There were 32 patients (21 healthy and 11 inflamed pouches). The IBD EZ VUE test was positive in 14 patients. It had a sensitivity of 100 percent and a specificity of 86 percent in diagnosing pouchitis. The positive predictive value was 76 percent. There were three false-positive results. The IBD EZ VUE test is a sensitive method that may remove the need for invasive pouch investigations and lead to greater confidence when antibiotic therapy is commenced. Further investigations may be reserved for those patients who have a positive lactoferrin test and fail to respond to antibiotic treatment.
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