Upper gastrointestinal endoscopy—How far does the endoscope go?

Charles E. Brady, David L. Stewart, Jack A. DiPalma, Donald J. Clement, Terrence W. Coleman, Kenneth S. Rugh

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Two adult-size endoscopes (Olympus GIF-K2 and ACMI TX-8) were compared for extent of duodenal intubation by the endoscopist's estimate of location and x-ray position in 55 patients. The endoscopes were not different in duodenal position when separately analyzed for the endoscopist's estimate or x-ray location. Combining the results for both endoscopes showed the endoscopist's estimate to differ significantly from x-ray location in 47% of patients (p = 0.02). When incorrect, the endoscopist overestimated 62% of the time and underestimated 38% of the time. X-ray evaluation of insertion depth confirmed that the second portion of the duodenum was reached in 96%, third portion in 51%, and fourth portion or beyond in 38% of patients. We conclude that fluoroscopic confirmation may be necessary when endoscopically assessing distal duodenal segments for pathology.

Original languageEnglish (US)
Pages (from-to)367-369
Number of pages3
JournalGastrointestinal Endoscopy
Issue number6
StatePublished - Jan 1 1985

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Gastroenterology


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