Practice Quiz

NCLEX-PN Exam Practice

Category - Respiratory

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What is the primary action of aminophylline (theophylline) when given for acute bronchitis?
  1. Promote expectoration.
  2. Suppress the cough.
  3. Relax the smooth muscles of the bronchial airway.
  4. Prevent infection.
Explanation
Answer: C - Aminophylline relaxes the smooth muscle of the bronchial airway. Aminophylline is a bronchodilator. This allows the airway to open so that the patient is able to breathe easier.
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Additional Answers

Ted Chan, MBA says:

Note that Aminophylline is the ethylenediamine salt of theophylline. Theophylline stimulates the CNS, skeletal muscles, and cardiac muscle. It relaxes certain smooth muscles in the bronchi, produces diuresis, and causes an increase in gastric secretion. Aminophylline is the ethylenediamine salt of theophylline.

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