I. What symptoms require a gastric electrogram? Gastric electrogram is mainly applied to gastric dysfunction. The main symptoms are nausea, vomiting, postprandial fullness, postprandial abdominal pain, early satiety and hiccups. If you have any of the above symptoms, you can have a gastric electrogram. Second, how to do a gastric electrogram? Gastric electrogram is a painless and non-invasive examination technique, and the price is relatively low. The main preparations before the examination are: 1, fasting for more than 6 hours; 2, stop using drugs that will affect the gastric myoelectric activity; 3, avoid cell phones and other interference during the examination; 4, avoid tobacco, alcohol, spicy and other irritants the whole examination process only takes half an hour, when the gastric electrical rhythm is abnormal, there will be corresponding abnormalities in the movement of the stomach, such as tachycardia, bradycardia or movement disorders. By observing the changes of gastric electrical rhythm through the electro-gastric examination, the movement of the stomach can be understood indirectly to some extent. Through the examination of gastric electrogram, it can well determine whether there is a power disorder of the stomach and its location, and at the same time precisely guide the treatment medication and medication course, which helps to form a reasonable and scientific diet. What diseases can be detected by EEG? Gastroelectrographic examination and analysis of its main indicators can help to detect some gastric dysfunctional diseases, such as functional dyspepsia, gastric diplegia (idiopathic gastric diplegia, diabetic gastric diplegia), chronic superficial gastritis, chronic atrophic gastritis, reflux gastritis, gastric ulcer, gastric tachycardia or bradycardia, motion sickness, unexplained nausea and vomiting in a timely and effective manner.