Author Question: A 12-year-old boy was recently diagnosed with asthma, and his primary care provider has prescribed a ... (Read 64 times)

drink · **on:** Jul 23, 2018

A 12-year-old boy was recently diagnosed with asthma, and his primary care provider has prescribed a corticosteroid to be administered by metered-dose inhaler. This drug achieves a therapeutic effect by which of the following means?

A) By increasing the number of beta-adrenergic receptors
B) By increasing the muscle tone in the smooth muscle of the trachea
C) By increasing the permeability of the alveolar membrane
D) By increasing the number of binding sites on erythrocytes

Question 2

A patient has psoriasis and has been prescribed coal tar (Balnetar). How will this prescription be administered?

A) Topically
B) Orally in divided daily doses
C) Orally in the morning
D) Parenterally at bedtime

stallen · **Reply #1 on:** Jul 23, 2018

Answer to Question 1

A
Feedback:
Corticosteroids increase the number of beta-adrenergic receptors and increase or restore responsiveness of beta receptors to beta-adrenergic bronchodilating drugs. They do not influence the permeability of alveoli, muscle tone, or the structure of red blood cells.

Answer to Question 2

A
Feedback:
Coal tar is administered topically.