Korean J Intern Med.  2020 Jul;35(4):889-896. 10.3904/kjim.2019.312.

Changes in performance of small bowel capsule endoscopy based on nationwide data from a Korean Capsule Endoscopy Registry

Affiliations
  • 1Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
  • 2Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang, Korea
  • 3Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, Korea
  • 4Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
  • 5Department of Internal Medicine, University of Ulsan College of Medicine, Seoul, Korea
  • 6Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
  • 7Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
  • 8Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
  • 9Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea

Abstract

Background/Aims
Capsule endoscopy (CE) is widely used for the diagnosis of small bowel diseases. The clinical performance and complications of small bowel CE, including completion rate, capsule retention rate, and indications, have been previously described in Korea. This study aimed at estimating the recent changes in clinical performance and complications of small bowel CE based on 17-year data from a Korean Capsule Endoscopy Registry.
Methods
CE registry data from 35 hospitals were retrospectively analyzed. Clinical information, including completion rate, capsule retention rate, and indications, was collected and analyzed. In addition, the most recent 5-year data for CE examinations were compared with the previous 12-year data.
Results
A total of 4,650 CE examinations were analyzed. The most common indication for CE was obscure gastrointestinal bleeding (OGIB). The overall incomplete examination rate was 16% and the capsule retention rate was 3%. Crohn’s disease was a risk factor for capsule retention. Inadequate bowel preparation was significantly associated with capsule retention and incomplete examination. An indication other than OGIB was a risk factor for incomplete examination. A recent increasing trend of CE diagnosis of Crohn’s disease was observed. The most recent 5-year incomplete examination rate for CE examinations decreased compared with that of the previous 12 years.
Conclusions
The 17-year data suggested that CE is a useful and safe tool for diagnosing small bowel diseases. The incomplete examination rate of CE decreased with time, and OGIB was consistently the main indication for CE. Inadequate bowel preparation was significantly associated with capsule retention and incomplete examination.

Keyword

Capsule endoscopy; Intestine, small; Retention; Bowel preparation
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