Without anesthesia, Yang Yang was very strong during the operation. At the same time, Yuan Bo also affirmed the quality of Yang Yang and praised his politeness. Faced with this news, some netizens questioned "Why not use anesthetic?" Some netizens retorted that "anesthetic is not good for the body" and "the ear is close to the brain and has an impact on the nerves. Yang Yang is still filming, and he has anesthetic but can't use it. " Of course, there are also Yang Yang fans who burst into tears and expressed their love.

Anesthetic is a drug that can make the whole body or a part of the body temporarily and reversibly lose consciousness and feel pain. Anesthetic refers to drugs that can temporarily and reversibly make the whole body or a part of the body lose consciousness and feel pain. According to its action scope, it can be divided into general anesthesia and local anesthesia, and according to its action characteristics and different administration methods, it can be divided into inhalation anesthesia and intravenous anesthesia.

Anesthetics are divided into general anesthesia and local anesthesia. General anesthetics inhibit the cerebral cortex from shallow to deep, making people unconscious. Local anesthesia can stabilize the membrane potential of nerve or reduce the permeability of membrane to sodium ions, block the conduction of nerve impulses, and play the role of local anesthesia.

General anesthesia is used for patients undergoing major surgery or unable to use local anesthesia. The earliest general anesthetic used is nitrous oxide, which has stable performance and is suitable for any anesthesia, but it has some shortcomings such as easy hypoxia and unstable anesthesiologist. Later, ether was used as a general anesthetic, which has the advantages of stable anesthesia, good muscle relaxation effect and convenient operation. But it is flammable, and it will produce peroxide if it is left for a long time. When using ether, avoid the fire source and check whether there is peroxide.