Retention associated with video capsule endoscopy: systematic review and meta-analysis.
Gastrointest Endosc 2017;
85:1157-1168.e2. [PMID:
28069475 DOI:
10.1016/j.gie.2016.12.024]
[Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 12/30/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS
Video capsule endoscopy (VCE) has become a major diagnostic tool for small-bowel evaluation. However, retention of the video capsule endoscope remains a major concern.
METHODS
We performed a systematic review of VCE retention rates by using Pubmed and SCOPUS (1995-2015). We included studies that enrolled at least 10 patients, included VCE retention rates, and separated retention rates by indication. We used Comprehensive Meta-Analysis (Version 3.0) to calculate pooled prevalence rates with 95% confidence intervals (CIs) and assessed heterogeneity by using the Cochran Q statistic.
RESULTS
We included 25 studies (N = 5876) for patients undergoing VCE for evaluation of potential small-bowel bleeding, 9 studies (N = 968) for patients with suspected inflammatory bowel disease (IBD), 11 studies (N = 558) for patients with established IBD, and 8 studies for patients (N = 111) undergoing VCE for evaluation of abdominal pain and/or diarrhea. We used a random effects model and found that the pooled retention rate was 2.1% for patients with suspected small-bowel bleeding (95% CI, 1.5%-2.8%). Retention rates were 3.6% (95% CI, 1.7%-8.6%) for suspected IBD, 8.2% (95% CI, 6.0%-11.0%) for established IBD, and 2.2% (95% CI, 0.9%-5.0%) for abdominal pain and/or diarrhea. Based on subgroup analysis, subsequent VCE completion rates after performance of a patency capsule or CT enterography in patients with IBD to exclude retentions due to strictures was 2.7% (95% CI, 1.1%-6.4%). Reasons for retention were provided in 60 (77%) studies. The most common reasons for retention were small-bowel strictures, although etiology was not provided in all studies.
CONCLUSION
VCE retention occurs in approximately 2% of patients undergoing evaluation for small-bowel bleeding and is most likely due to small-bowel strictures. Retention rates in patients with suspected or known IBD were approximately 4% and 8%, based on our meta-analysis. These rates decreased by half in those studies that used either a patency capsule or CT enterography to assess patency before performing VCE.
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