Gastroscopy is done by a doctor and an assistant, it usually takes 3-5 minutes, and you must first sign a consent form. The throat is anesthetized with Lidocaine spray, the effect of which is lasts for approx. half an hour.
During the examination, a thin, flexible tube – the endoscope – is passed through the oesophagus all the way to the duodenum. The image transmitted by the endoscope is enlarged and evaluated by the examining physician through a monitor.
Histological sampling may be performed during the examination, as well as removal of foreign bodies, polyps, in situ carcinoma, haemostasis, and bleeding prevention.