Evaluation of three effervescent agents for double-contrast upper gastrointestinal radiography

Robert E. Koehler, Philip J. Weyman, Robert J. Stanley, Joseph K.T. Lee, Dennis M. Balfe

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The agent used to introduce gas into the stomach is an important factor in determining the quality of double-contrast upper gastrointestinal radiography. The efficacy of 3 effervescent agents formulated for use in double-contrast upper gastrointestinal radiography was evaluated in 300 patients. Patients found 2 granular preparations (E-Z-Gas granules and Baros) easier to swallow than a powdered agent (E-Z-Gas powder). Bubble formation and flocculation of barium in the stomach were less of a problem with Baros. Differences in mucosal coating and visualization of areae gastricae were not statistically significant.

Original languageEnglish
Pages (from-to)111-114
Number of pages4
JournalGastrointestinal Radiology
Issue number1
StatePublished - Dec 1981


  • Double contrast, technique
  • Effervescent agents
  • Gastrointestinal tract, radiography


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