34392487
Descrição
Quiz por ACAPUN INSTITUTE, atualizado more than 1 year ago
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Criado por ACAPUN INSTITUTE
aproximadamente 3 anos atrás
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Questão 1
Questão
Diazepam is preferred to a barbiturate as an antianxiety agent because diazepam
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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
Questão 2
Questão
Diazepam is preferred to a barbiturate as an antianxiety agent because diazepam
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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
Questão 3
Questão
Benzodiazepines exert their main effect on
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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
Questão 4
Questão
All of the following pertain to general anesthesia induced by thiopental EXCEPT:
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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
Questão 5
Questão
Which of the following factors contributes to the short duration of action of a single dose of thiopental?
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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
Questão 6
Questão
Speed of recovery from short-acting anesthesia with thiopental depends chiefly on the rapidity of
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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
Questão 7
Questão
The action of the ultrashort-acting barbiturates is terminated primarily by the process of
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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
Questão 8
Questão
Which of the following is NOT characteristic of barbiturates?
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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
Questão 9
Questão
The cause of death from acute barbiturate poisoning is
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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
Questão 10
Questão
Which of the following adverse effects is most commonly associated with administration of an intravenous barbiturate?
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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
Questão 11
Questão
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
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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
Questão 12
Questão
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
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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)
Questão 13
Questão
Barbiturates are contraindicated in a dental patient with:
a. Emphysema
b. Hypertension
c. Undiagnosed severe pain
d. Acute intermittent porphyria
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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
Questão 14
Questão
If diazepam (Valium) is to be given intravenously, it is recommended that a large vein be used in order to
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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
Questão 15
Questão
The most important therapeutic measure to be taken in a case of barbiturate poisoning is to
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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
Questão 16
Questão
For oral sedation in the dental setting, the most ideal group of agents is:
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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
Questão 17
Questão
Which of the following is an advantage of midazolam over diazepam EXCEPT one. Which one is this EXCEPTION?
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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
Questão 18
Questão
Which of the following drugs best reverses the effects of benzodiazepines?
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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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