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Subsequently, the term and variant spellings like anæsthesia are used in medical literature signifying "insensibility". [28] In 1846, in a letter, Oliver Wendell Holmes proposed the term anesthesia to be used for the state induced by an agent and anesthetic for the agent itself. Holmes motivates this with earlier uses of anesthesia in medical ...
General anaesthesia (UK) or general anesthesia (US) is medically induced loss of consciousness that renders a patient unarousable even by painful stimuli. [5] It is achieved through medications, which can be injected or inhaled, often with an analgesic and neuromuscular blocking agent .
The Meyer-Overton correlation for anaesthetics. A nonspecific mechanism of general anaesthetic action was first proposed by Emil Harless and Ernst von Bibra in 1847. [9] They suggested that general anaesthetics may act by dissolving in the fatty fraction of brain cells and removing fatty constituents from them, thus changing activity of brain cells and inducing anaesthesia.
General anaesthetics (or anesthetics) are often defined as compounds that induce a loss of consciousness in humans or loss of righting reflex in animals. Clinical definitions are also extended to include an induced coma that causes lack of awareness to painful stimuli, sufficient to facilitate surgical applications in clinical and veterinary practice.
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Anesthesia is a combination of the endpoints (discussed above) that are reached by drugs acting on different but overlapping sites in the central nervous system. General anesthesia (as opposed to sedation or regional anesthesia) has three main goals: lack of movement , unconsciousness, and blunting of the stress response. In the early days of ...
William Thomas Green Morton and the discovery of anesthesia]. Schweizerische Medizinische Wochenschrift (in German). 126 (47): 2040– 2. PMID 8984612. Pavlovskiĭ L. N. (2005). "Dentist William Morton is a founder of general anesthesia" [Dentist William Morton is a founder of general anesthesia]. Likars'ka Sprava (in Russian) (1– 2): 111– 5.
Anesthesia – pharmacologically induced and reversible state of amnesia, analgesia, loss of responsiveness, loss of skeletal muscle reflexes or decreased sympathetic nervous system, or all simultaneously. This allows patients to undergo surgery and other procedures without the distress and pain they would otherwise experience.