Ordinary gastroscopy, because the probe of gastroscope passes through the pharynx, will lead to severe vomiting, which is not easy to be accepted by people. Painless gastroscopy is carried out under the effect of short-acting anesthetic drugs, so patients will not feel any pain and are easy to accept. The anesthesia operation and anesthetic used in painless gastroscopy are relatively expensive, and the overall cost is slightly higher. However, because the pain of examination is obviously less, it is especially suitable for people who are sensitive to pharyngeal reflex and elderly patients with poor physique.

Before gastroscopy, dyclonine mucilage should be taken orally to anesthetize the throat. Within half an hour after gastroscopy, the pharyngeal anesthetic is still working. During this period, you are forbidden to eat and drink, so as to avoid food entering the trachea by mistake and causing suffocation or aspiration pneumonia. After gastroscopy, some patients may feel sore throat or foreign body sensation, and the symptoms will be relieved or disappeared after 2-3 days. Those with obvious symptoms can be treated with drugs such as Caoshanhu buccal tablets, watermelon frost throat moistening tablets and iodine-containing tablets. If biopsy is taken from diseased tissue during gastroscopy, spicy stimulation, tobacco, alcohol, coffee and fried cold food should be avoided within 1-2 days after examination, and liquid and semi-liquid foods such as porridge and egg custard can be eaten to prevent bleeding on the wound surface.