Dye can be injected down the endoscope for special X-rays of the pancreas, bile ducts and gall bladder. During an endoscopy the doctor can also release blockages to the pancreas and bile ducts, or stretch narrow areas in the oesophagus. Endoscopy is very often done as a day-case, that is, you will go home on the same day. You will be told not to have anything to eat or drink for at least six hours before the test, usually from midnight the night before a morning test. You must arrange for someone to take you home after the test.
Some procedures require an overnight stay in hospital for observation.
When you arrive at the hospital or day-surgery unit you will see a nurse or a doctor. They will ask you questions about your general health to make sure you are fit enough for the procedure, check that you have not had anything to eat or drink, and check your pulse and blood pressure. You must tell the doctor or nurse if you have had any allergic or unusual reactions to drugs in the past. You will be asked to sign a consent form to say that you understand the procedure and have given your permission for it to be done. You will need to put on a hospital gown and remove any false teeth, jewellery and nail varnish.