Surgery is generally divided into general anesthesia and local anesthesia (semi-anesthesia), and the type of anesthesia will be judged according to the risk of surgery. Everyone who knows about surgery knows that anesthesia is always involved in major surgery. We often say that semi-anesthesia is actually local anesthesia, which is called differently in different places, and then it refers to anesthesia of a certain part of the body. General anesthesia, as its name implies, is to directly put anesthetics into the meridians, so that people's brains can go into a dormant state and avoid any action during the operation that will affect the operation.

1. For dangerous operations, or those involving operations that will easily touch arteries, general anesthesia will be directly used.

General anesthesia is what we call general anesthesia, which is to inject anesthetics into the body through veins and then flow to the brain, so that the brain is in a state of deep sleep. It does not completely anesthetize the body, but anesthetize the brain; In relatively large-scale surgery, people who are worried that the patient will move slightly during the process and cause danger will adopt general anesthesia, so that the patient can sleep all the time to achieve a perfect operation. Of course, everyone who knows about brain anesthesia knows that general anesthesia has a great influence on the patient, and even there will be memory forgetfulness for a period of time. Xiaobian was unable to remember some memories for a period of time because of anesthesia.

Second, for the operation with little risk and controllable, only local anesthesia is generally selected to reduce the harm to human body

Considering the great influence of general anesthesia on people, local anesthesia is always performed according to the degree of danger of the operation. Local anesthesia, which some people will call semi-anesthesia, does not mean that half of the body is anesthetized, but it is a contrast with general anesthesia. Local anesthesia will be used in caesarean section and local operation. As long as the operation is not dangerous, general anesthesia will not be chosen. After all, general anesthesia does have a lot of effects on the human body, and even some people will be in danger because of general anesthesia.

General anesthesia means that the anesthetic acts on the brain and makes the patient fall asleep. Semi-anesthesia means local anesthesia, and a certain part of the body is anesthetized.