Introduction to gastroscopy Gastroscopy is the abbreviation of upper gastrointestinal tract and stomach endoscopy. It uses a soft, thin (about 1.1 cm in diameter) and flexible optical lens to enter the mouth. There is a micro-camera at the front end of the tube. Through simultaneous vision Like examination, the examination parts include: esophagus, stomach and duodenum. Who needs to undergo gastroscopy 1. Suspected upper gastrointestinal bleeding (bloody vomit or black stool) 2. Difficulty swallowing and persistent vomiting 3. Acid reflux or burning sensation in the chest, or indigestion 4. Persistent pain in the upper abdomen 5. Stomach pain 6. Esophageal ulcer, gastric ulcer, duodenal ulcer. Ulcers may be a sign of cancer 7. Tumor 8. Inflammation, such as tractitis, gastritis 9. Anemia 10. High-risk individuals, such as those with a family history of upper gastrointestinal cancer Preparation before gastroscopy 1. Start fasting 6 hours before the examination to empty your stomach and avoid vomiting during the examination. 2. If you suffer from diabetes, high blood pressure, drug allergies, etc., you should inquire with your doctor about medication arrangements before the examination. The doctor may advise the examiner to stop taking certain medications before the examination. After the doctor explains the examination process, you need to sign an examination consent form. 3. If you have a pacemaker, your doctor should be notified. 4. Before the examination, remove glasses, dentures, jewelry and any metal objects. 5. It is recommended to arrange for a person to accompany you to leave, as you may feel dizzy after being injected with sedatives. gastroscopy procedure 1. If you choose sedation, the medical staff will perform local throat spray anesthesia and sedative injection according to the doctor's prescription to make the examiner sleep and reduce discomfort. Common medications include Midazolam and Pethidine, among others. 2. If you choose Monitored Anesthetic Care (MAC), the anesthesiologist will administer anesthetics through intravenous injection. Common drugs include Propofol and Fentanyl. 3. The examiner lies on his left side and wears a dental pad to protect his teeth. During the examination, advanced equipment will be used to monitor blood pressure, heartbeat and blood oxygen content. 4. The doctor will take a tissue sample from the examiner's gastric membrane and put it into a rapid test strip to perform a gastroscopy rapid urea test (CLO Test). It will take about an hour to determine whether the patient is infected with gastric Helicobacter pylori. Precautions after gastroscopy 1. After the examination, the examiner will rest in bed for several hours in the resuscitation area until he is fully awake before he can get up and move around. During this period, medical staff will closely monitor the examiner's vital signs. 2. The laryngeal anesthesia reaction lasts for about 1 hour, and you may feel mild nausea, mild sore throat, and stomach bloating. You should not eat or drink immediately. 3. After receiving sedation injection, the examiner will forget part of the examination and feel dizzy. After the inspection, do not drive a vehicle, operate machinery, sign important documents, or make important decisions. It is best for the inspector to undergo the inspection accompanied by family members for safety reasons.