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Quiz von ACAPUN INSTITUTE, aktualisiert more than 1 year ago
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Erstellt von ACAPUN INSTITUTE
vor mehr als 2 Jahre
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Frage 1
Frage
Diazepam is preferred to a barbiturate as an antianxiety agent because diazepam
Antworten
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a. Produces no sedation
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b. Has less addiction potential
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c. Is a very short-acting drug
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d. Is substantially less expensive
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e. Does not potentiate the action of CNS depressants
Frage 2
Frage
Diazepam is preferred to a barbiturate as an antianxiety agent because diazepam
Antworten
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a. Produces no sedation
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b. Has less addiction potential
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c. Is a very short-acting drug
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d. Is substantially less expensive
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e. Does not potentiate the action of CNS depressants
Frage 3
Frage
Benzodiazepines exert their main effect on
Antworten
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a. Neuromuscular junctions
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b. Peripheral reflex synapses
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c. Central GABAergic neurons
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d. Central serotonergic neurons
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e. Central adrenergic nerve endings
Frage 4
Frage
All of the following pertain to general anesthesia induced by thiopental EXCEPT:
Antworten
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a. Fast induction
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b. Decreased secretions
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c. Low therapeutic index
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d. Short duration of anesthesia
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e. Predisposition to laryngospasm
Frage 5
Frage
Which of the following factors contributes to the short duration of action of a single dose of thiopental?
Antworten
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a. rapid biotransformation
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b. rapid accumulation in body fat
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c. high lipid solubility of the undissociated form
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d. ability to enter and leave the brain tissue rapidly
Frage 6
Frage
Speed of recovery from short-acting anesthesia with thiopental depends chiefly on the rapidity of
Antworten
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a. Renal tubular secretion
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b. Hepatic degradation of the thiopental group
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c. Redistribution from the brain to skeletal muscle
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d. Reverse diffusion across the blood-brain barrier
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e. None of the above
Frage 7
Frage
The action of the ultrashort-acting barbiturates is terminated primarily by the process of
Antworten
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a. Oxidation
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b. Redistribution
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c. Renal excretion
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d. Plasma protein binding
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e. Conjugation with sulfate
Frage 8
Frage
Which of the following is NOT characteristic of barbiturates?
Antworten
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a. Possess anticonvulsant properties
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b. Possess significant analgesic properties
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c. Possess serious drug dependence potential
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d. Vary in degree of lipid solubility and hypnotic potency
Frage 9
Frage
The cause of death from acute barbiturate poisoning is
Antworten
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a. Convulsions
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b. Liver damage
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c. Renal failure
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d. Respiratory failure
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e. Cardiovascular depression
Frage 10
Frage
Which of the following adverse effects is most commonly associated with administration of an intravenous barbiturate?
Antworten
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a. Hypotension
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b. Renal failure
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c. Hepatic necrosis
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d. Nausea and vomiting
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e. Respiratory depression
Frage 11
Frage
Important steps in the treatment of barbiturate poisoning include:
a. Maintaining an open airway
b. Increasing the input of afferent stimuli
c. Maintaining respiration
d. Administering a narcotic antagonist
e. Administering a central nervous system stimulant
Antworten
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a) (a) and (b) only
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b) (a), (b), (c) and (e)
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c) (a) and (c) only
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d) (b) and (e) only
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e) (d) only
Frage 12
Frage
Which of the following are true regarding barbiturates?
a. Significantly elevates pain thresholds
b. Are metabolized by the liver
c. Are classified according to duration of action
d. Depress all levels of the CNS
e. Cause death by cardiovascular depression
Antworten
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a) (a), (b) and (c)
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b) (a) and (d)
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c) (b), (c) and (d)
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d) (b) and (e)
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e) (c), (d) and (e)
Frage 13
Frage
Barbiturates are contraindicated in a dental patient with:
a. Emphysema
b. Hypertension
c. Undiagnosed severe pain
d. Acute intermittent porphyria
Antworten
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a) (a), (c) and (d)
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b) (a) and (d) only
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c) (b) and (c)
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d) (b) only
Frage 14
Frage
If diazepam (Valium) is to be given intravenously, it is recommended that a large vein be used in order to
Antworten
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a. Hasten the onset of action
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b. Decrease the risk of thrombophlebitis
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c. Offset the vasoconstrictor qualities of diazepam
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d. None of the above
Frage 15
Frage
The most important therapeutic measure to be taken in a case of barbiturate poisoning is to
Antworten
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a. Alkalinize the urine
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b. Aspirate stomach contents
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c. Administer a CNS stimulant
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d. Assure adequate respiration
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e. Administer osmotic diuretics
Frage 16
Frage
For oral sedation in the dental setting, the most ideal group of agents is:
Antworten
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a. Narcotics
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b. Barbiturates
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c. Antihistamines
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d. Benzodiazepines
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e. Anticholinergics
Frage 17
Frage
Which of the following is an advantage of midazolam over diazepam EXCEPT one. Which one is this EXCEPTION?
Antworten
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a. Lesser incidence of thrombophlebitis
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b. Shorter elimination half-life
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c. No significant active metabolites
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d. Less potential for respiratory depression
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e. More rapid and predictable onset of action when given intramuscularly
Frage 18
Frage
Which of the following drugs best reverses the effects of benzodiazepines?
Antworten
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a. Naloxone
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b. Flumazenil
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c. Midazolam
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d. Aminophylline
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e. Physostigmine
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