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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 |