What Principle Is Nerve Block Therapy

Use local anesthetics to block cranial nerve, spinal nerve and its ganglion, or sympathetic ganglion, through nerve block to relieve pain, improve blood circulation, treatment of painful diseases, called nerve block therapy. Although the procedure of nerve block therapy is basically the same as that of nerve block therapy, the drug used and its concentration may be different due to the different purpose, and the position taken during the operation may be different. The mechanisms of nerve block therapy are as follows :(1) blocking the nerve conduction pathway of pain; (2) To block the vicious circle of pain: it is observed that the analgesic time produced by the application of local anesthetics nerve block is obviously longer than the anesthetic effect of local anesthetics; In some patients, a single nerve block can relieve pain that has persisted for several years when multiple treatments have failed. This suggests that blocking local nerve pathways is not the only mechanism of action in the treatment of pain with local anesthetics. It is generally believed that this is due to nerve block therapy cutting off the vicious cycle of "painful ® muscle tension or exacerbation of small vessel smooth muscle spasm ® pain". (3) Improve blood circulation: The application of sympathetic nerve block can improve the blood flow in its innervated area, thus effectively improving the pain caused by poor peripheral blood circulation. (4) Anti-inflammatory effect: Studies have confirmed that nerve block therapy, especially sympathetic nerve block therapy, has anti-inflammatory effect and thus produces good analgesic effect.

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