There are three main categories of anesthesia used during surgery and other procedures: general anesthesia, regional anesthesia and local anesthesia All types of anesthesia are administered to keep patient comfortable and pain-free during surgery, medical procedures, or tests. But there are some key differences. General anesthesia is used for major operations, such as a knee replacement or open-heart surgery, and causes patient to lose consciousness. Regional anesthesia is often used during childbirth and surgeries of the arm, leg, or abdomen. It numbs a large part of the body, but patient remains aware. Local anesthesia is for procedures such as getting stitches or having a mole removed. It numbs a small area, and patient is alert and awake.
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