What is the meaning of nerve block puncture needle anesthesia

Nerve block puncture needle anesthesia, also known as conduction anesthesia, is to inject local anesthetic into the nerve stem, temporarily block nerve conduction function, to achieve painless surgery method. Nerve block anesthesia uses a small amount of drugs, has a wide range of anesthesia, has a small risk of anesthesia, and has a long action time. The patient is awake and maintains intraoperative communication with the surgeon, so the anesthetic effect is relatively good. Nerve block anesthesia is mainly applied to the limbs, hands, feet, below the groin and armpits, among which the limbs are its strengths. In addition, a nerve block may be used to anesthetize minor surface operations. The advantages of nerve block anesthesia are that it can eliminate the pain in the operation by anesthetizing the nerve, with less amount of drugs, wide range of anesthesia and long operation time. For some patients or diseases are not suitable for local anesthesia or general anesthesia, you can use nerve block anesthesia, but some large operations, only the nerve anesthesia is not enough, but also to the central inhibition, you have to use general anesthesia. There are two main contraindications for nerve block needle anesthesia: 1. The patient has severe hypokalemia or recent coronary heart disease. 2. Skin infection, ulceration or peripheral nerve lesions at the puncture site. If anesthesia is performed with contraindications, it can lead to infection, loss of nerve function and neuropathy. If necessary, avoid diseased skin and nerves.