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Transnasal Endoscopy (TNE)

Transnasal Endoscopy (TNE) avoids the common side effects of conventional (through the mouth) gastroscopy such as gagging, retching and nausea because the transnasal approach minimizes contact with the tongue – therefore no sedation is needed.

The advantages of transnasal endoscopy are:

  • No need to be accompanied for the test
  • No sedation required
  • No gagging or retching
  • Quick recovery
  • Can return to work right away
  • Driving a car, operating machinery and drinking alcohol are allowed after the test


  • For the investigation of:
    • Heartburn (acid or GERD)
    • Indigestion (dyspepsia)
    • Difficulty swallowing (dysphagia)
    • Pain swallowing (odynophagia)
    • Upper abdominal pain or weight loss (for possible stomach ulcers or cancer)
    • Anemia
    • Gastro-intestinal bleeding
  • For surveillance of patients with Barrett’s esophagus
  • To take biopsies (e.g. for Barrett’s esophagus, Helicobacter pylori, celiac disease)
  • To assess the anatomy of the stomach (e.g. for hiatus hernia or before anti-reflux surgery)
  • To investigate abnormalities seen at X-ray (e.g. after barium swallow)
  • To assess the gullet (esophagus) in patients with head and neck cancer
  • To place feeding tubes or feeding tube extensions into the stomach or small bowel (jejunum) via the nose or the mouth
  • For patients who need a gastroscopy who do not want or cannot have sedation (e.g. because of heart or lung disease or in case of pregnancy)
  • For patients who cannot tolerate endoscopy through the mouth (e.g. as this causes excessive gagging or retching)