Why are inhaled steroids used to treat asthma and chronic obstructive pulmonary disease (COPD)?

A) They act locally to decrease release of inflammatory mediators.
B) They act locally to improve mobilization of edema.
C) They act locally to increase histamine release.
D) They act locally to decrease histamine release.


A
Feedback:
When administered into the lungs by inhalation, steroids decrease the effectiveness of the inflammatory cells. This has two effects, which are decreased swelling associated with inflammation and promotion of beta-adrenergic receptor activity, which may promote smooth muscle relaxation and inhibit bronchoconstriction. Options B, C, and D are incorrect.

Nursing

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