What is Gastroscopy?

Gastroscopy, also known as Oesophago-Gastro-Duodenoscopy (OGD), is a minimally invasive procedure used to examine the lining of the upper digestive tract, including the esophagus, stomach, and duodenum. In Singapore, where digestive disorders are prevalent due to dietary habits and lifestyle factors, gastroscopy plays a role in diagnosing conditions such as gastritis, ulcers, and even early-stage cancers.

Gastroscopy is performed using a thin, flexible tube called an endoscope. This instrument contains a tiny camera and light source, allowing the gastroenterologist to visualize the internal structures of the digestive tract in real-time.

How is Gastroscopy Done?

During a gastroscopy procedure, patients are typically sedated to ensure comfort and minimize discomfort. Sedation is administered intravenously or through a combination of medications, depending on the patient’s medical history and preferences. A local anesthetic spray will be used to numb your throat.

Sedation helps relax the patient and reduce gag reflexes, making the procedure more tolerable.

The examination takes about 10-20 minutes to complete. You may experience mild bloating or belching as air is inflated to distend the stomach. It is a procedure that is painless, and has no effect on your breathing.

Once sedated, the gastroenterologist gently inserts the endoscope through the mouth and guides it down the esophagus into the stomach and duodenum. Throughout the procedure, the gastroenterologist carefully examines the lining of the digestive tract, looking for abnormalities such as inflammation, polyps, ulcers, or tumors. If necessary, tissue samples (biopsies) may be taken for further analysis.

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