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Drug Other common names Image First synthesis Dates of clinical use Chemical/structural class Duration of effect amylocaine: Stovaine 1904 (Ernest Fourneau) ester- benzoic ambucaine [1] diester - aminosalicylic articaine: Astracaine, Septanest, Septocaine, Ultracaine, Zorcaine Amide benzocaine: Anbesol, Orajel Ester - Aminobenzoic Short benzonatate
Leaves of the coca plant (Erythroxylum novogranatense var. Novogranatense), from which cocaine, a naturally occurring local anesthetic, is derived [1] [2]. An anesthetic (American English) or anaesthetic (British English; see spelling differences) is a drug used to induce anesthesia — in other words, to result in a temporary loss of sensation or awareness.
Balanced anesthesia can make patients calm by using drugs such as: medetomidine, diazepam or midazolam, and acepromazine. [18] Keeping patients calm prior to surgery can avoid the unpredictable consequences of stress, such as tachypnea, hypertension and tachycardia which may be harmful to the anesthetized patients. [18]
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 .
Some patients request to be switched to a different narcotic due to stigma associated with a particular drug (e.g. a patient refusing methadone due to its association with opioid addiction treatment). [4] Equianalgesic charts are also used when calculating an equivalent dosage of the same drug, but with a different route of administration.
The drug interactions between sedative-hypnotic agents and adjuvant agents suggest that dosing regimens cannot be fixed. [19] Instead, dosing should be based on adjusted body weight or estimated lean body weight, especially for obese patients. It is recommended that drug doses be titrated in brief intervals (around 20 to 60 seconds). [22]
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.
Examples of preanesthetic agents are: Acepromazine [1]; atropine [1]; diazepam [1]; Scopolamine; Opioid analgesics, such as morphine, pethidine and buprenorphine.; These drugs are used before the administration of an anesthetic to improve patient comfort, reduce possible side effects such as Postanesthetic shivering, relieve pain, and increase the effectiveness of the anesthetic.