Factors Affecting Complete Small Bowel Study and Diagnostic Yield in MiroCam(R) Capsule Endoscopy

Jung, Wonho; Koh, Jin Sung; Kim, Sung Ho; Lim, Sang Ah; Lim, Eun Hye; Lee, Joon Young; Joo, Moon Kyung; Lee, Beom Jae; Kim, Ji Hoon; Yeon, Jong Eun; Park, Jong Jae; Kim, Jae Seon; Byun, Kwan Soo; Bak, Yung Tae; Lee, Sang Woo; Choi, Jae Hyun

Abstract

BACKGROUND/AIMS
Mirocam(R) capsule endoscopy has been widely used in Korea; however, data with respect to Mirocam(R) capsule endoscopy is lacking. We have assessed the factors affecting complete small bowel studies and diagnostic yield in Mirocam(R) capsule endoscopic studies.
METHODS
We retrospectively analyzed 103 cases that were assessed with Mirocam(R) capsule endoscopy between June 2007 and February 2010 at Guro Korea University Hospital.
RESULTS
The mean age of the 103 cases was 55.47 years (range, 16-99 years) and 67 cases (65%) were male. The indications for capsule endoscopy were hematochezia/melena (77 cases, 74.8%), anemia (8 cases, 7.8%), abdominal pain (12 cases, 11.7%), and miscellaneous (weight loss and chronic diarrhea; 6 cases, 5.8%). The mean stomach transit time was 59.9+/-88.3 minutes (range, 1-630 minutes) and the mean small bowel transit time was 396.0+/-131.7 minutes (range, 117-708 minutes). The rate of successfully performing a complete small bowel study was 82.5% (85 cases), and the stomach transit time was a significant factor for a complete small bowel study (OR=0.991, 95% CI=0.984-0.998, P=0.012). The diagnostic yield was 51.5% (53 cases); visual quality was a significant factor in determining the diagnostic yield (OR=6.776, 95% CI=1.32-34.70, P=0.022).
CONCLUSIONS
In a Mirocam(R) capsule endoscopic study, short stomach transit time was a significant factor affecting completion of the small bowel study. Achieving excellent visual quality by good bowel preparation was a significant factor for improving the diagnostic yield.