Anesthesia

Anesthesia (alternative spelling Anaesthesia) is the prevention of consciousness or sensation, usually by means of chemicals known as anesthetics (alternative spelling anaesthetics). On March 30, 1842 in Jefferson, Georgia, Dr. Crawford Williamson Long[?] was the first to use anesthesia during an operation; ether was given to his wife during childbirth.

Anesthesia can be divided into

• General anesthesia (with loss of consciousness)
• Local anesthesia (without loss of consciousness)