Peripheral Nerve Blocks for Anesthesia
Peripheral nerve blocks are a type of regional anesthesia. The anesthetic is injected near a specific nerve or bundle of nerves to block sensations of pain from a specific area of the body.
Nerve blocks usually last longer than local anesthesia. They are most commonly used for surgery on the arms and hands, the legs and feet, or the face.
Proper positioning of the needle during a nerve block may involve touching the nerve to be blocked with the tip of the needle. When this occurs, you may experience a sharp sensation like an electrical shock in the part of the body supplied by the nerve. Be sure to let your anesthesiologist know if you feel such a sensation.
Other medicines are often given with nerve blocks to make you relaxed or sleepy (sedatives) or to reduce pain. These are given through a vein (intravenously, IV).
People are carefully watched during the procedure, because the anesthetics used for regional nerve blocks may affect the central nervous system, cardiovascular system, and respiratory system (airway and lungs) and may affect breathing, heartbeat, and other vital functions.
Nerve blocks may be most useful when the procedure:
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