What is regional anesthesia?

Regional anesthesia involves the loss of sensation in a limited area of the body to prevent pain. It is produced by drugs that interrupt the action of nerves that carry the pain sensation. These drugs are known as local anesthetics. Regional anesthesia does not normally affect the brain. Although no pain is felt with regional anesthesia, the anesthesiologist sometimes administers sedatives or tranquilizers through the IV to help with anxiety and apprehension. There are several types of regional anesthesia that are named according to where the anesthesia is administrered and what area loses sensation.

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