are drugs that produce unconsciousness and a lack of responsiveness to all painful stimuli
m m m m m m m m m m m m m
Given only by licensed anesthesiologists (physicians) and certified registered nurse
m m m m m m m m m
anesthetists
m
Used to facilitate certain procedures - ANSWER: ➡ General anesthetics
m m m m m m mm m m
Molecular mechanism of action of Inhalation Anesthetics - ANSWER: ➡ Enhances
m m m m m m m m mm m
transmission at inhibitory synapses
m m m m
Depresses transmission at excitatory synapses
m m m m
Except for nitrous oxide, all of the agents used today enhance the activation of receptors for
m m m m m m m m m m m m m m m
gamma-aminobutyric acid, which is the principal inhibitory transmitter in the central
m m m m m m m m m m m
nervous system (CNS)
m m m
Minimum alveolar concentration - ANSWER: ➡ The minimum concentration of drug in the
m m m m mm m m m m m m m
alveolar air that will produce immobility in 50% of patients exposed to a painful stimulus
m m m m m m m m m m m m m m m
Drug Interactions of General Anesthetics - ANSWER: ➡ Analgesics, CNS depressants, and
m m m m m m mm m m m m
CNS stimulants can influence the amount of anesthetic required to produce anesthesia
m m m m m m m m m m m m
Opioids allow for a reduction
m m m m
CNS depressants add to the depressant effects of anesthesia
m m m m m m m m
, Given to reduce anxiety, produce perioperative amnesia, and relieve preoperative and
m m m m m m m m m m
postoperative pain - ANSWER: ➡ Preanesthetic medications
m m m m mm m m
What do surgical procedures require? - ANSWER: ➡ skeletal muscle relaxation
m m m m m m mm m m m
reduce amount of anesthesia needed and prevent contraction of all skeletal muscles,
m m m m m m m m m m m
including diaphragm and muscles of respiration (flaccid paralysis) - ANSWER: ➡
m m m m m m m m m m mm
Neuromuscular blocking agents
m m m
Examples of Postanesthetic Medications - ANSWER: ➡ Analgesics
m m m m m mm m
Antiemetics
Muscarinic antagonists m
Halothane
Enflurane
Desflurane
Sevoflurane
Nitrous oxide m
Obsolete inhalation anesthetics
m m
Anesthetic Properties of Halothane - ANSWER: ➡ High-potency anesthetic
m m m m m mm m m
Time course: Smooth and relatively rapid
m m m m m
Weak analgesia
m
Muscle relaxation generally inadequate for surgery
m m m m m
Adverse Effects of Halothane - ANSWER: ➡ Hypotension
m m m m m mm m
Respiratory depression m
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