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General Anesthetics
anesthetics
Question | Answer |
---|---|
MOA of general anesthetics | Most are thought to act at GABA-A receptor - chloride channel |
Inhaled anesthetic with a low blood/gas partition coefficient | Nitrous oxide |
Inversely related to potency of anesthetics | Minimum alveolar anesthetic concentration (MAC) |
Inhaled anesthetics metabolized by liver enzymes which has a major role in the toxicity of these agents | Halothane and methoxyflurane |
Most inhaled anesthetics SE | Decrease arterial blood pressure |
Inhaled anesthetics are myocardial depressants | Enflurane and halothane |
Inhaled anesthetic causes peripheral vasodilation | Isoflurane |
nhaled anesthetic that may sensitize the myocardium to arrhythmogenic effects of catecholamines and has produced hepatitis | Halothane |
Inhaled anesthetic, less likely to lower blood pressure than other agents, and has the smallest effect on respiration | Nitrous oxide |
Fluoride released by metabolism of this inhaled anesthetic may cause renal insufficiency | Methoxyflurane |
Prolonged exposure to this inhaled anesthetic may lead to megaloblastic anemia | Nitrous oxide |
Pungent inhaled anesthetic which leads to high incidence of coughing and vasospasm | Desflurane |
DOC for malignant hyperthermia that may be causedby use of halogenated anesthetics | Dantrolene |
IV barbiturate used as a pre-op anesthetic | Thiopental |
Benzodiazepine used adjunctively in anesthesia | Midazolam |
Benzodiazepine receptor antagonist, it accelerates recovery from benzodiazepine overdose | Flumazenil |
This produces "dissociative anesthesia ", is a cardiovascular stimulant which may increases intracranial pressure, and hallucinations occur during recovery | Ketamine |
Opioid associated with respiratory depression, but is used in high risk patients who may not survive full general anesthetia | Fentanyl |
State of analgesia and amnesia produced when fentanyl is used with droperidol and nitrous oxide | Neuroleptanesthesia |
Produces both rapid anesthesia and recovery, has antiemetic activity and commonly used for outpatient surgery, may cause marked hypotension | Propofol |