Transnasal esophagoscopy and gastroscopy
Many people feel anxious when they are told they need a gastroscopy. The traditional test, performed through the mouth, often causes gagging, nausea, or discomfort, and usually requires sedation with a longer recovery time. Transnasal esophago-gastroscopy (TNE) is a newer, patient friendly alternative. It uses a much thinner camera passed gently through the nose, making the procedure far more comfortable, avoiding the gag reflex, and usually eliminating the need for sedation. This leaflet explains what TNE is, why it may be recommended, what to expect, and the benefits compared with the traditional approach.
TNE is a test that allows your doctor to look at your food pipe (esophagus), stomach, and the first part of your small bowel. A very thin, flexible camera is gently passed through your nose. Because the camera is so slim, it avoids most of the gagging that people feel with traditional gastroscopy. Most patients find it comfortable and do not need sedation.
Why might I need it?
You may benefit from TNE if you have symptoms such as:
• Difficulty swallowing
• Food getting stuck in the throat or chest
• Feeling of a lump in the throat (globus sensation)
• Heartburn, acid reflux or regurgitation
• Chronic cough or throat clearing
• Pain behind the breastbone
• Bloating or stomach pains
• Unexplained weight loss
Preparing for the Test
✔️ To ensure the best results:
- Do not eat for 6 hours before the procedure.
- You may drink small sips of water up to 2 hours before.
- Only change or stop medicines if your doctor advises you.
- Bring a list of your current medications with you.
What happens during the test?
- You will sit upright in a chair.
2. We will spray your nose and throat with a numbing spray.
3. The doctor gently passes the thin tube through your nostril.
4. You may be asked to swallow or sip water to help guide the scope.
5. A small amount of air is introduced to allow clear views.
6. Pictures and video are taken, and biopsies may be done if needed.
7. The scope is removed, and you can usually return to normal activities straight away.
After the Test
- Mild sore throat or a small nosebleed may occur but usually pass quickly.
• You can eat and drink once the numbness wears off.
• Most people can go home and return to normal activities immediately.
• Contact the clinic if you develop chest pain, heavy bleeding, or difficulty breathing.
Are there any risks?
⚠️ Minor nosebleeds or sore throat can occur.
⚠️ Very rarely, a small tear (perforation) may happen, but this is extremely uncommon with the thin, flexible scope.
What are the benefits?
✅ More comfortable than traditional endoscopy
✅ No sedation needed
✅ Quick recovery—you can go home immediately
✅ You can talk to your doctor during the test
✅ You can follow the entire procedure on large videoscreen (if you want)
✅ Accurate and safe way to diagnose problems
Are there alternatives?
Yes, other tests include:
• Standard endoscopy through the mouth (often with sedation)
• Barium swallow X-ray
• CT or MRI scans (do not allow biopsies)
TNE vs Traditional Gastroscopy
| Aspect | Traditional Gastroscopy | Transnasal Esophagogastroscopy |
|---|---|---|
| Comfort | ❌ Gagging, nausea common | ✅ Comfortable, gagging rare |
| Sedation | ❌ Often required | ✅ Not required |
| Duration | ❌ May take an hour+ | ✅ 10–15 minutes |
| Recovery | ❌ Observation, restrictions | ✅ Immediate, no restrictions |
| Communication | ❌ Cannot speak during test | ✅ Can talk to doctor |
| Cost | ❌ More expensive | ✅ Less costly |
Frequently Asked Questions
ℹ️ Will it hurt? – Most patients feel only mild pressure or discomfort.
ℹ️ Can I drive afterwards? – Yes, as no sedation is used.
ℹ️ Will I be asleep? – No, you remain awake and can talk to your doctor.
ℹ️ How long does it take? – Usually 10–15 minutes.