Upper GI Endoscopy
Advanced Endoscopic Evaluation of the Upper Digestive Tract
Upper GI Endoscopy (also known as Gastroscopy or Upper Gastrointestinal Endoscopy) is a safe, accurate, and minimally invasive procedure used to examine the oesophagus (food pipe), stomach, and duodenum (first part of the small intestine).
Using a thin, flexible tube fitted with a high-definition camera, the procedure allows direct visualization of the upper digestive tract to diagnose the cause of symptoms, obtain tissue samples (biopsy), and perform certain treatments during the same procedure when required.
Upper GI Endoscopy is considered the gold standard investigation for many diseases affecting the upper digestive system and plays a crucial role in the early diagnosis of ulcers, infections, inflammation, bleeding, and gastrointestinal cancers.
Clinical Highlights
When is Upper GI Endoscopy Recommended?
- Persistent acidity or heartburn (GERD)
- Upper abdominal pain or discomfort
- Difficulty or pain while swallowing (Dysphagia/Odynophagia)
- Persistent nausea or vomiting
- Vomiting blood (Haematemesis)
- Black stools (Melena)
- Unexplained anaemia
- Unexplained weight loss
- Loss of appetite
- Recurrent indigestion or dyspepsia
- Suspected stomach or oesophageal ulcer
- Suspected gastrointestinal bleeding
- Long-standing acid reflux requiring evaluation
- Follow-up of previously diagnosed ulcers or Barrett's oesophagus
- Surveillance for selected gastrointestinal conditions
What Conditions Can Be Diagnosed?
Oesophageal Disorders
- Acid Reflux (GERD)
- Oesophagitis
- Barrett's Oesophagus
- Oesophageal Strictures
- Achalasia
- Oesophageal Varices
- Oesophageal Cancer
Stomach Disorders
- Gastritis
- Helicobacter pylori Infection
- Gastric Ulcers
- Gastric Polyps
- Stomach Cancer
- Gastric Outlet Obstruction
Duodenal Disorders
- Duodenitis
- Duodenal Ulcers
- Coeliac Disease
Gastrointestinal Bleeding
- Upper Gastrointestinal Bleeding from ulcers, varices, or vascular malformations
Treatments Performed During Procedure
How Should I Prepare?
Before the Procedure
- Do not eat or drink anything for 6–8 hours before the procedure to ensure stomach is completely empty.
- Inform your doctor about all medications you are taking, especially blood thinners, diabetes medications, or insulin.
- Inform your doctor if you have heart disease, lung disease, kidney disease, liver disease, or allergies.
- Remove dentures, spectacles, and removable dental appliances before the procedure.
- If sedation is planned, arrange for a responsible adult to accompany you home.
What Happens During the Procedure?
- 1After arriving at the endoscopy unit, your medical history will be thoroughly reviewed.
- 2Your blood pressure, pulse, and oxygen levels will be continuously monitored.
- 3A local anaesthetic spray is applied to numb the throat and suppress the gag reflex.
- 4Sedation may be administered when appropriate to improve patient comfort.
- 5You will be asked to lie comfortably on your left side.
- 6The endoscope is gently passed through the mouth into the oesophagus, stomach, and duodenum.
- 7Air or carbon dioxide is gently introduced to expand the digestive tract for clear visualization.
- 8Photographs, videos, or painless biopsies may be taken if necessary.
- 9The diagnostic examination usually takes only 1-2 minutes (5-10 minutes if therapeutic interventions are performed).
Is the Procedure Painful?
Most patients tolerate Upper GI Endoscopy very well. You may experience mild throat numbness, temporary gagging during insertion, and a feeling of fullness due to air introduced into the stomach. The procedure is generally not painful, and sedation can be used when appropriate to improve comfort.
Is Sedation Necessary?
Many patients undergo Upper GI Endoscopy comfortably using only local throat anaesthesia. However, conscious sedation may be recommended for anxious patients, previous difficulty tolerating endoscopy, therapeutic procedures, or selected medical conditions. Your doctor will discuss the most appropriate option based on your individual needs.
Is it Safe?
Upper GI Endoscopy is considered a very safe procedure when performed by experienced gastroenterologists using modern equipment. Serious complications are uncommon.
- Bleeding (usually minor, following therapeutic procedures or biopsy)
- Perforation (very rare)
- Sedation-related complications
- Temporary sore throat
- Temporary bloating
Frequently Asked Questions
Doctor's Clinical Advice
"Persistent acidity, difficulty swallowing, unexplained weight loss, recurrent vomiting, vomiting blood, black stools, or long-standing indigestion should never be ignored. Upper GI Endoscopy is one of the safest and most effective investigations for identifying the underlying cause and allowing early treatment before serious complications develop."
— Dr. Dipankar Das (DM Gastroenterology, IMS BHU Varanasi)