A patient receiving anaesthesia.
A person undergoing major surgery is an example of a person who is in a state of anaesthesia.
(countable and uncountable, plural anaesthesias)
- (medicine) A method of preventing sensation, used to eliminate pain.
- Loss or prevention of pain, as caused by anesthesia.
an- + aesthesia, from Ancient Greek ἀναισθησία (anaisthēsia), from ἀν- (an, “not”) with αἴσθησις (aisthēsis, “sensation”).
Coined in 1846 CE by Oliver Wendell Holmes, Sr., in a letter to dentist William T. G. Morton, the first practitioner to publicly demonstrate the use of ether during surgery, writing:
- Everybody wants to have a hand in a great discovery. All I will do is to give a hint or two as to names—or the name—to be applied to the state produced and the agent. The state should, I think, be called ‘Anaesthesia.’ This signifies insensibility—more particularly ... to objects of touch.
- When a solution of the strength of about i in zo is applied to the skin it produces a local anaesthesia which lasts for many hours.
- Bartlett, of Dr Horace Wells (1815-1848), the discoverer of anaesthesia; and one, by E.
- Some of them are so volatile that they produce their effects when inhaled, others when sprayed upon the skin cause intense cold and then anaesthesia; but taken in the broadest sense the action of all of them after absorption into the blood is very similar, and is exerted upon the central nervous system, more especially the cerebrum.
- Morphine-scopolamine anaesthesia was introduced in 1902 by Steinbiickel.
- It is largely used in dentistry and slight surgical operations to produce local anaesthesia, and is known by the trade-name kelene.