The nurse instructs a client with asthma on bronchodilator therapy. Which statement indicates client understanding of how the drug works?
A)"The medication widens the airways by causing airway muscle contraction."
B)"The medication widens the airways by causing airway muscle relaxation."
C)"The medication widens the airways by decreasing histamine production."
D)"The medication widens the airways by decreasing mucus production."

Question

Quizplus · Accepted Answer

A)Bronchodilators stimulate bronchiolar smooth muscle relaxation, not contraction. Smooth muscle relaxation increases the diameter of the airway lumen to enhance airflow. Bronchodilators do not decrease the production of mucus or the production of histamine.
B)Bronchodilators stimulate bronchiolar smooth muscle relaxation, not contraction. Smooth muscle relaxation increases the diameter of the airway lumen to enhance airflow. Bronchodilators do not decrease the production of mucus or the production of histamine.
C)Bronchodilators stimulate bronchiolar smooth muscle relaxation, not contraction. Smooth muscle relaxation increases the diameter of the airway lumen to enhance airflow. Bronchodilators do not decrease the production of mucus or the production of histamine.
D)Bronchodilators stimulate bronchiolar smooth muscle relaxation, not contraction. Smooth muscle relaxation increases the diameter of the airway lumen to enhance airflow. Bronchodilators do not decrease the production of mucus or the production of histamine.

The Nurse Instructs a Client with Asthma on Bronchodilator Therapy