With the continuous improvement of gastroscopy technology, the scope of application is also expanding. It is easy to operate, non-injurious, painless to the patient, and requires no special treatment after surgery.

1. Preoperative

Eliminate nervousness and facilitate better cooperation with the examination. Fasting for 12 hours and water for 2 hours before surgery to empty the stomach is to prevent Food is inhaled into the trachea during vomiting, which also facilitates examination.

2. During the operation

The patient lies on the left side with his legs flexed. When entering the mirror, make swallowing movements. Do not hold your breath. Take a deep breath or exhale, which can relax the body. Reduce discomfort such as nausea and vomiting. Rest for a while after withdrawing from the mirror. You may feel numbness in your throat. This is a reaction caused by the anesthetic. It will usually disappear naturally in half an hour.

3. Postoperative period

Be careful to rest after the operation, continue to fast, and do not drink water within 1 hour to prevent choking and coughing. You can drink an appropriate amount of water after the anesthetic effect wears off. If you are not coughing after 2 hours, you can eat warm and cool soft food, such as noodles, porridge, etc., and then gradually resume your normal diet. If symptoms such as vomiting, melena, and abdominal pain are found, follow-up visits should be made in time.

To prevent hepatitis infection, liver function and hepatitis B surface antigen tests are done before gastroscopy. If you have a gastroscopy in the morning, do not eat or drink after 8 pm the day before the examination, and do not smoke. Eat low-residue, easy-to-digest food for dinner the day before. If a gastroscopy is performed in the afternoon, the patient can be asked to drink some sugar water before 8 a.m. that day, but not to eat anything else, and not to eat at noon. If a barium meal examination has been performed, the barium meal may be attached to the gastrointestinal mucosa, especially at the site of ulcer lesions, making fiberoptic gastroscopy difficult to diagnose. Therefore, gastroscopy must be performed 3 days after the barium meal examination.

Local anesthesia is used, which involves spraying 2% dicaine or 2% xylocaine three times when the patient opens his mouth and makes an "ah" sound. After each spray, the patient swallows the medicine remaining in the mouth to anesthetize the lower part of the throat. There is also a paste that is held in the mouth and tilted up so that the medicine stays in the throat and naturally flows into the esophagus, acting as a local anesthetic. Before the examination, the patient should first urinate and empty his bladder. After entering the examination room, loosen his collar and belt, remove his dentures and glasses, lie on his left side, or change to other positions as needed. After entering the mirror, do not bite the mirror with your teeth to prevent biting the plastic tube of the mirror body. The body and head cannot be rotated to prevent damage to the mirror and damage to internal organs. If there is discomfort and the patient has endured it for a period of time and really cannot bear it, he can use gestures to signal the operator (doctor or nurse) so that necessary measures can be taken.

After the examination, the patient sat up and spit out saliva. Because some air was injected during the examination, although it was sucked out when the microscope was withdrawn, some people still felt abdominal distension and belched a lot. Because the anesthetic effect has not disappeared, eating too early can easily cause food to enter the trachea. Therefore, 2 hours after the examination, wait until the pharyngeal anesthetic effect wears off before trying to eat liquid food. Within 1 to 4 days, the patient may feel discomfort or pain in the throat, but this does not hinder eating and drinking. Most people can work as usual. Those with severe illness must rest. Drivers cannot drive alone that day. It is best to have a family member accompany you during a gastroscopy and escort you home after the examination.

If a gastroscopy is performed in the morning, do not eat any food, including drinking water, and smoke after 8 pm the day before the examination. For dinner the day before, you should eat food that is easy to digest and has less residue. If a gastroscopy is performed in the afternoon, the patient can be asked to drink some sugar water before 8 a.m. that day, but not to eat anything else, and not to eat at noon. For patients with pyloric obstruction, a thorough gastric lavage must be performed the night before the examination, and no examination can be performed on the day of gastric lavage. If a barium meal examination has been performed, a gastroscopy must be performed 3 days after the barium meal examination. In order to reduce saliva secretion, reduce reflexes, and reduce tension, you can inject atropine, diazepam or luminal 15 to 30 minutes before the examination, and drink a defoaming agent after the injection. Local anesthesia with 2% dicaine or 2% xylocaine can also be used. Before taking the above medicines, tell your doctor about your drug allergies.

Patients and doctors should cooperate. Before the examination, the patient should urinate and empty his bladder. After entering the examination room, loosen the collar and belt, remove the dentures and glasses, and lie on the left side, or change to another position as needed. Other positions. After entering the mirror, do not bite the mirror with your teeth to prevent biting the plastic tube of the mirror body. The body and head cannot be rotated to prevent damage to the mirror and damage to internal organs. If there is discomfort and the patient has endured it for a period of time and really cannot bear it, he can use gestures to signal the operator (doctor or nurse) so that necessary measures can be taken. After the examination, the patient sat up and spit out saliva. Since some air was injected during the examination, although it was sucked out when the microscope was withdrawn, some people still had abdominal distension and belching. Because the anesthetic effect has not disappeared, eating too early can easily cause food to enter the trachea. Therefore, 2 hours after the examination, wait until the pharyngeal anesthetic effect wears off before trying to eat liquid food. It is best to have a family member accompany you during a gastroscopy and escort you home after the examination. Gastroscopy cannot be performed for some diseases, such as spinal deformity, confusion, mental illness, pulmonary heart disease, asthma, high blood pressure, and patients whose doctors think are not suitable for gastroscopy.