Gastroscopy (or Endoscopy) is a medical procedure used to look for disease in the oesophagus, stomach and duodenum (first part of the small intestine). It can help discover the reasons for swallowing difficulties, nausea, vomiting, reflux, bleeding, indigestion, abdominal pain or chest pain.
For the procedure to be thorough and safe, your stomach and duodenum must be empty. You will not be able to eat or drink anything for at least 6 hours beforehand.
Just before the procedure, the anaesthetist will administer a strong sedative so you can sleep through the whole procedure.