Question Of The Day: Respiratory Disorders

Q. The nurse has administered aminophylline to a client with emphysema. The medication is effective when there is:

A. Relief from spasms of the diaphragm.
B. Relaxation of smooth muscles in the bronchioles.
C. Efficient pulmonary circulation.
D. Stimulation of the medullary respiratory center.

Correct Answer: B

Explanation: Aminophylline, a bronchodilator that relaxes smooth muscles in the bronchioles, is used in the treatment of emphysema to improve ventilation by dilating the bronchioles. Aminophylline does not have an effect on the diaphragm or the medullary respiratory center and does not promote pulmonary circulation.