If you have been experiencing unexplained digestive symptoms like reflux, abdominal discomfort, or swallowing difficulties, your doctor might suggest a procedure called a gastroscopy. While it may sound technical or intimidating at first, gastroscopy is a safe, well-tolerated test that provides valuable insight into the health of your upper digestive system.
At the Reflux & Swallowing Center, our team of specialists performs gastroscopy procedures for Brisbane patients in a supportive, modern clinical environment. This comprehensive guide is designed to help you understand exactly what gastroscopy is, why it might be needed, and what you can expect throughout the process — from preparation to recovery.
What Is a Gastroscopy?
A gastroscopy (also known as an upper endoscopy) is a procedure that allows your doctor to visually inspect the inside of your oesophagus, stomach, and the first part of your small intestine (duodenum) using a thin, flexible tube with a camera and light.
The instrument, called a gastroscope, sends real-time images to a screen, allowing your specialist to detect any signs of irritation, inflammation, ulcers, abnormal growths, or bleeding. This test is essential for diagnosing a wide range of conditions that affect digestion, swallowing, or stomach pain.
For a full overview of the procedure, visit our gastroscopy services page.
Why Might You Need a Gastroscopy?
Doctors often recommend gastroscopy to investigate symptoms that have not responded to treatment or cannot be fully explained through other tests.
You may be referred for a gastroscopy if you are experiencing:
- Ongoing acid reflux or heartburn
- Swallowing difficulties (dysphagia)
- Nausea or vomiting without a known cause
- Upper abdominal pain or discomfort
- Signs of internal bleeding such as black stools or vomiting blood
- Iron deficiency anaemia with no other explanation
- Unintentional weight loss or early satiety
- Ongoing symptoms despite normal blood tests or imaging
A gastroscopy is also used for regular monitoring of conditions such as Barrett’s oesophagus, coeliac disease, or chronic gastritis.
If your symptoms relate to the lower digestive system, a colonoscopy in Brisbane may also be considered as part of a comprehensive investigation.
What Can a Gastroscopy Detect?
Gastroscopy offers direct visual access to the upper gastrointestinal tract. This allows for the early detection and diagnosis of a wide range of conditions, including:
Inflammation and Irritation
Inflammation of the oesophagus (oesophagitis) or stomach lining (gastritis) is a common finding. These conditions may be caused by acid reflux, infection, medications or autoimmune disorders.
Ulcers
Peptic ulcers are open sores in the stomach or duodenum. They may bleed or cause persistent pain. Gastroscopy can determine their location, size and cause, and allows for biopsy testing if needed.
Barrett’s Oesophagus
This condition involves changes in the lining of the oesophagus, usually due to long-term reflux. It carries a small risk of cancer over time and requires monitoring through regular gastroscopy.
Coeliac Disease
If coeliac disease is suspected, gastroscopy with biopsy is used to confirm the diagnosis and assess the extent of small intestine damage.
Structural Abnormalities
Conditions such as a hiatal hernia, strictures or narrowing of the oesophagus can all be detected through gastroscopy. These structural issues may affect digestion or swallowing.
Suspicious Growths or Cancer
If any abnormal tissue or growth is identified, a small sample (biopsy) can be taken during the procedure for further analysis. Early diagnosis is key to better outcomes.
To learn more about how gastroscopy can support diagnosis and early detection, see our detailed FAQs.
How to Prepare for a Gastroscopy
Preparation is simple but important. Your care team will give you personalised instructions, but general steps usually include:
Fasting
You will be asked to avoid all food and drinks for at least six hours before the procedure. This helps ensure your stomach is empty, which improves visibility and reduces the risk of aspiration.
Medications
Let your doctor know about any medications or supplements you are taking. Some may need to be adjusted, such as blood thinners or insulin.
Transportation
Because you will receive sedation, you will need someone to drive you home. It is not safe to drive, operate machinery, or make important decisions for the remainder of the day.
These steps will be explained again on the day of your appointment. You can always reach out to our team if you have questions about preparation or medications.
What Happens During the Procedure
Gastroscopy is typically performed as a day procedure and takes 15 to 30 minutes.
Before the Procedure
You will check in at the clinic, where our team will review your health history, place a small cannula in your arm, and prepare you for sedation. You will also be given time to ask any final questions.
Sedation
Most patients receive a light sedative through an IV to help them relax. You will likely feel sleepy and may not remember the procedure. The sedation ensures comfort while keeping you breathing normally.
The Examination
While lying on your side, the doctor will gently insert the gastroscope through your mouth and down into your oesophagus and stomach. A small amount of air is introduced to inflate the area for better viewing.
If needed, biopsies will be taken using tiny tools passed through the scope. These are painless and take only a few seconds.
You will then be taken to a recovery area to rest while the sedation wears off.
Recovery and Aftercare
After the procedure, you will rest in recovery for about 30 to 60 minutes. You may feel a bit groggy or have a mild sore throat, but this typically resolves within a few hours.
You should not return to work, drive, or make important decisions for the rest of the day. Most patients resume normal activities the following day.
If biopsies were taken, your doctor will advise when to expect results and whether a follow-up appointment is needed.
Our team will also provide you with clear written instructions and remain available if you have questions once you are home. For more detailed guidance, see our about us page to learn how we support patients through recovery.
Is Gastroscopy Safe?
Yes, gastroscopy is considered very safe, especially when performed by experienced specialists in a monitored setting.
Common Effects
- Mild sore throat
- Bloating or wind discomfort
- Drowsiness from sedation
Rare Risks
- Bleeding from biopsy site
- Adverse reaction to sedation
- Perforation (very rare)
Our team will discuss all risks and benefits with you in advance. Safety protocols are followed at every stage to ensure you are well cared for.
Support for Long-Term Digestive Health
Gastroscopy is often just one part of understanding your digestive health. In some cases, additional tests such as capsule endoscopy or colonoscopy may be recommended, depending on your symptoms and results.
At the Reflux & Swallowing Center, we take a holistic approach to managing gastrointestinal issues, from diagnosis through to treatment and follow-up. If you are ready to take the next step in understanding your symptoms, we are here to help.
Take the First Step
Concerned about persistent reflux, discomfort or swallowing problems? Gastroscopy may provide the answers you need.
Book a consultation today to discuss your symptoms and determine whether gastroscopy is the right next step. Our Brisbane-based team is here to support you with clear information and experienced care.
Visit our contact page to request an appointment.
Frequently Asked Questions
What is a gastroscopy used for?
Gastroscopy helps doctors diagnose conditions affecting the upper digestive tract, including reflux, ulcers, gastritis, coeliac disease and early signs of cancer.
Is gastroscopy painful?
No. You will receive light sedation to help you relax. Most patients feel no pain and do not remember the procedure.
How long does gastroscopy take?
The procedure usually takes 15 to 30 minutes, with additional time for check-in and recovery.
Can I eat after a gastroscopy?
You can usually eat once you are fully awake and the sedative has worn off. Start with light food and avoid alcohol for the rest of the day.
Is gastroscopy done under general anaesthetic?
No. Gastroscopy is done under conscious sedation. You will feel relaxed and sleepy, but you will breathe on your own.
