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Ch8 Rau's Respiratory Care Pharmacology, 9th Edition Xanthines Question with Correct Answers
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Ch8 Rau's Respiratory Care Pharmacology, 9th Edition Xanthines Question with Correct Answers
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Ch8 Rau's Respiratory Care Pharmacology, 9thEdition Xanthines Question with Correct Answers
1. The mechanism of action of xanthines is
a.well defined.
b.understood by a few physicians but not public knowledge.
c.not published.
d.unclear. Correct Answer-d.unclear.
2. Theophylline should be used to treat
a.acute respiratory distress syndrome (ARDS).
b.pneumonia.
c.apnea of prematurity.
d.cystic fibrosis (CF). Correct Answer-c.apnea of prematurity.
3. The xanthine of choice to treat apnea of prematurity is
a.theophylline.
b.dyphylline.
c.caffeine citrate.
d.aminophylline. Correct Answer-c.caffeine citrate.
4. Theophylline and caffeine are examples of
a.b agonists.
b.methylxanthines.
, c.corticosteroids.
d.anticholinergics. Correct Answer-b.methylxanthines.
5. Theophylline is classified as a bronchodilator because it
a.stimulates b2-adrenergic sites.
b.stimulates a-adrenergic sites.
c.blocks cholinergic sites.
d.has a relaxing effect on bronchial smooth muscle. Correct Answer-
d.has a relaxing effect on bronchial smooth muscle.
6. Which of the following physiologic effects is not produced by
xanthines?
a.Cerebral vasodilation
b.Cardiac muscle stimulation
c.Bronchial smooth muscle relaxation
d.Central nervous system (CNS) stimulation Correct Answer-a.Cerebral
vasodilation
7. Which drug stimulates skeletal muscle and the central nervous system
(CNS) the strongest?
a.Theophylline
b.Aminophylline
c.Caffeine
d.Ipratropium Correct Answer-c.Caffeine
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