What is transnasal gastroscopy?

A Patient’s Story

When Michael was advised to undergo a gastroscopy to investigate ongoing indigestion, his first reaction was anxiety. He had concerns about gagging, sedation, and needing time away from work.


During his consultation at LSDC, he learned about transnasal gastroscopy, an option designed to improve comfort while maintaining diagnostic accuracy. Understanding how the procedure worked helped him feel reassured and in control before the test.

What Is a Transnasal Gastroscopy?

transnasal gastroscopy is a minimally invasive diagnostic procedure used to examine the upper gastrointestinal tract, including the oesophagusstomach, and the duodenum.


Unlike conventional gastroscopy, this technique uses a thin, flexible camera that is passed gently through the nose rather than the mouth. This approach significantly reduces the gag reflex, making the procedure better tolerated for most patients.


Because of this improved tolerance, the examination is usually performed without sedation, allowing for a faster recovery and an immediate return to daily activities.

Why Might You Need a Transnasal Gastroscopy?

Your doctor may recommend this investigation if you are experiencing:
  • Persistent heartburn or indigestion
  • Upper abdominal pain
  • Nausea or vomiting
  • Difficulty or pain when swallowing
  • Unexplained weight loss or anaemia

This examination enables specialists at LSDC to diagnose conditions such as gastritispeptic ulcersinfections, and coeliac disease. If necessary, a biopsy may be taken. This involves removing a very small tissue sample, is painless, and allows for accurate laboratory analysis.

The Benefits of Choosing Transnasal Gastroscopy at LSDC

Choosing a transnasal approach often means a more comfortablesafe, and convenient experience. At LSDC, patient wellbeing and clinical excellence remain the priority.

1. No Sedation Required

Most patients remain fully awake, reducing medical risk and eliminating recovery delays.

2. Greater Comfort and Control

Breathing is unaffected, and you can communicate with the specialist throughout.

3. Rapid Recovery

There is no post-procedure grogginess, and most patients feel well immediately.

4. Return to Daily Activities

You can usually eat, drink, and drive within a short time after the procedure.

How Does It Compare With Conventional Gastroscopy?

Feature Transnasal Gastroscopy Conventional Gastroscopy
Entry route Through the nose Through the mouth
Gag reflex Rarely triggered Common
Sedation Usually not required Often required
Recovery Almost immediate Several hours
Driving Permitted immediately Not permitted for 24 hours

What to Expect During Your Visit to LSDC

Before the Procedure

An empty stomach is essential for a safe and accurate examination. You should not eat or drink for six hours beforehand.Essential medications may be taken with a small sip of water.

On arrival, the LSDC clinical team will confirm your details and answer any remaining questions. Shortly before the test, a local anaesthetic and decongestant spray are applied to the nose to enhance comfort.

During the Procedure

You will be comfortably seated. The specialist gently guides the ultra-thin endoscope through one nostril. Your breathing is not affected. A small amount of air may be introduced to improve visibility, which can feel unusual but is not painful. The procedure typically lasts 5 to 10 minutes.

After the Procedure

You may rest briefly while the numbness wears off, usually within 30 to 60 minutes. The specialist will explain the initial findings immediately and provide a written report. If biopsies were taken, results are usually available within one week. You can then continue with your day as normal.

Risks and Safety

transnasal gastroscopy is considered a very safe and low-risk investigation.

  • Mild nasal congestion or sore throat
  • minor nosebleed
  • Short-lived bloating

Serious complications such as bleeding or perforation are extremely rare. At LSDC, all procedures are performed by experienced specialists following strict safety protocols.

FAQ's

Is transnasal gastroscopy as accurate as a standard gastroscopy?

Yes. Transnasal gastroscopy provides high-quality visualisation of the oesophagus, stomach, and duodenum and is equally effective for diagnosing conditions such as inflammation, ulcers, infection, and coeliac disease. Biopsies can be taken safely and painlessly, just as with a conventional gastroscopy.

Does transnasal gastroscopy hurt?

Most patients describe the procedure as uncomfortable rather than painful. Because the camera passes through the nose instead of the mouth, the gag reflex is largely avoided. A local anaesthetic spray is used to numb the nasal passage, which significantly improves comfort.

Can I eat, drink, or drive after a transnasal gastroscopy?

Yes. As sedation is usually not required, you can eat and drink within about an hour, drive yourself home, and return to work or normal activities the same day. This is one of the main advantages of transnasal gastroscopy.

Who is not suitable for transnasal gastroscopy?

Transnasal gastroscopy may not be suitable for patients with significant nasal obstruction, previous major nasal surgery, or bleeding disorders affecting the nasal passages. In these cases, a conventional gastroscopy may be recommended instead.

Why would my specialist recommend transnasal gastroscopy at LSDC?

At LSDC, transnasal gastroscopy is often recommended for patients who want a more comfortable experience, wish to avoid sedation, or need a rapid recovery. It allows accurate diagnosis with minimal disruption to daily life while maintaining the highest clinical standards.

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