Agent that produces a local or general loss of sensation, including pain, and therefore is useful in surgery and dentistry. General anesthesia induces loss of consciousness, most often using hydrocarbons (e.g., cyclopropane, ethylene); halogenated (see halogen) hydrocarbons (e.g., chloroform, ethyl chloride, trichloroethylene); ethers (e.g., ethyl ether or vinyl ether); or other compounds, such as tribromoethanol, nitrous oxide, or barbiturates. Local anesthesia induces loss of sensation in one area of the body by blocking nerve conduction (see nervous system, neuron), usually with alkaloids such as cocaine or synthetic substitutes (e.g., lidocaine). Seealso anesthesiology.
Learn more about anesthetic with a free trial on Britannica.com.
Anaesthetic assistant competencies: our experience.(IN THEIR OPINION: Life as they see it--members of AfPP write on issues that concern or interest them)
May 01, 2008; Introduction Let us consider why we require a new set of competencies. During the 1990s the National Occupational Standards for...