Precautions before gastroscopy vary from person to person. Some people, especially those with some chronic basic diseases, must pay attention. For example, patients with hypertension must pay attention to taking medicine on time and regularly until the morning of gastroscopy to ensure the stability of blood pressure.

Patients with coronary heart disease must pay attention to the stable condition of coronary heart disease and stop taking aspirin, warfarin and other drugs in advance to prevent bleeding during gastroscopy or biopsy. Then the last thing to pay attention to is fasting, that is, fasting for about 8 hours, so if you have diabetes and are prone to hypoglycemia, you should take preventive measures. Go to the gastroscope room on an empty stomach on the day of gastroscopy, then wait in front of each room according to the arrangement of the nurse, and then the nurse will let you drink anesthetic. At this time, you must prepare a local anesthetic. I used to like lidocaine, but now I use dyclonine. On the one hand, these drugs can play an anesthetic role locally, and on the other hand, they can defoam, making the mucosal surface in the stomach easier to be observed. As long as you pay attention to these, gastroscopy can still be carried out smoothly.