Anesthesia: What is the site of action of general and local anesthesia

General anesthesia is a method of anesthesia in which anesthetics act on the central nervous system (brain and spinal cord) to suppress it, resulting in loss of consciousness and no pain in the body. General anesthetics can be divided into inhalation anesthetics and intravenous anesthetics. Inhalation anesthetics through respiratory tract inhalation and achieve general anesthesia is called inhalation anesthesia, and intravenous anesthetics through venous or muscle injection and the general anesthesia caused by intravenous anesthesia. At present, the most commonly used general anesthesia in clinic is the combination of the two anesthesia. In order to ensure the patency of the patient's respiratory tract, a catheter is often placed into the patient's trachea, called tracheal intubation general anesthesia.

Local ANAESTHESIA is TO show WHEN LOCAL anaesthesia IS APPLIED AT THE LOCAL NERVE OF BODY PERIPHERY, PRODUCE THE anAESthesia OF BODY some PLACE ONLY, THIS PLACE DOES NOT FEEL PAIN. Local anesthesia is completely reversible and does not cause tissue damage. Topical anesthesia, local infiltration anesthesia and nerve block anesthesia are commonly used in local anesthesia. Surface anesthesia is the local anesthetic and local mucous membrane (such as eye mucous membrane, nasal mucosa, oral mucosa) direct contact, penetrating the mucous membrane action at nerve endings and produce local anesthetic effect. What we often refer to as local anesthesia mainly refers to local infiltration anesthesia. Local infiltrative anesthesia is a layered injection of local anesthetics along the surgical incision to anesthetize the nerve endings in the tissue and produce local anesthesia. We commonly used brachial plexus anesthesia and cervical plexus anesthesia are also local anesthesia, but they are nerve block anesthesia. Nerve block anesthesia is not the local anesthetic used in nerve endings, but the local anesthetic used in the nerve trunk (plexus), block the conduction function of the nerve, to achieve painless surgery. In addition, local anesthesia is not commonly used to have regional local anesthesia and local intravenous anesthesia.

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