Speaking of this question, we should first ask "What is anesthesia?" There is a concept. The so-called "numbness" means no pain, and "drunkenness" means no consciousness. Simply put, "anesthesia" is to make the patient's pain or consciousness disappear temporarily during the operation. According to the needs of the surgical site, there are two main anesthesia methods: general anesthesia and regional anesthesia.
A, general anesthesia:
General anesthesia is mainly suitable for head and neck, chest or upper abdomen surgery. During the operation, the patient has no pain and consciousness, and almost no surgical memory. At this point, the patient's life state is completely in the hands of the anesthesiologist. Because anesthetics act on the brain, it will affect or even interfere with the physiological functions of respiratory and cardiovascular systems to a certain extent. Therefore, patients with previous diseases, such as heart and lung, will have a higher anesthesia risk when receiving general anesthesia.
General anesthesia can be divided into intravenous anesthesia and inhalation anesthesia according to the route of drugs entering the body. Usually at the beginning of anesthesia, anesthetic drugs are injected to make the patient unconscious, and then inhaled anesthetic is given through a mask or endotracheal tube to achieve the purpose of anesthesia.
Second, the regional anesthesia:
Regional anesthesia is mainly aimed at the specific part of the operation and gives local anesthetic. During the operation, the patient was still conscious, but did not feel pain. When necessary, anesthesiologists can still give sedatives through intravenous drip to relieve patients' anxiety.
Regional anesthesia can be divided into: (1) spinal anesthesia-drugs are directly injected into spinal fluid to block nerve conduction and achieve analgesic effect; (2) Epidural anesthesia-injecting drugs into spinal fluid outside the spinal cord, which is similar in nature to spinal anesthesia; (3) Nerve block of upper and lower limbs-injecting drugs around the nerves of arms and feet.
Spinal anesthesia and epidural anesthesia are called "semi-anesthesia" by the public. It is the most widely used regional anesthesia at present, mainly suitable for lower limbs, lower abdomen and other operations.
Anesthesia methods vary according to the needs of surgery, and the patient's physiological condition sometimes affects the choice of anesthesia methods. Take the case that happened in my hospital as an example. One day at noon, two gynecological emergency operations came in succession in the operating room. Case A is ovarian torsion complicated with acute abdominal pain, and the patient's life symptoms are still stable. According to the needs of the surgical site, we chose semi-anesthesia and intravenous sedative to relieve the tension of patients. On the other hand, case B is ectopic pregnancy complicated with internal bleeding. Because the patient has shown signs of shock such as restlessness, shortness of breath and unstable blood pressure, general anesthesia is a more suitable choice. Therefore, two identical lower abdominal operations, based on the patient's safety first, have different anesthesia methods.
Finally, patients' cognition and preference for anesthesia also affect the choice of general anesthesia or semi-anesthesia. Under the condition that the patient's physiological condition is stable and the same surgical conditions, the risk of partial anesthesia is naturally relatively lower than that of general anesthesia. However, the general public's fear or even rejection of semi-anesthesia is widespread. The Journal of Anesthesiology, published by the Anesthesiology Society of the Republic of China, once published an investigation report on "Cesarean Section Women Refuse Hemianesthesia". In the report, 324 caesarean section women were investigated and asked to give one or two reasons for refusing half-body anesthesia. Results There were 200 cases of parturient who refused hemianesthesia, and the most common reasons were fear of listening and watching (48.42%) and fear of low back pain (65,438+). The ideal anesthesia method should conform to the following principles: (1) The need of operation; (2) Safety first; (3) Cognition of patients. Perhaps, many considerations cannot be taken into account at the same time. As long as you communicate with your anesthesiologist or anesthesiologist, according to your surgical characteristics, physiological conditions and preferences, I believe you can definitely decide the most suitable anesthesia method for you.