A patient who has an upper respiratory infection accompanied by severe cough has been given an antitussive medication with codeine. The patient asks why codeine is part of the prescribed drug
Which is the most appropriate response of the health care provider?
a. Codeine suppresses cough because it has a depressant effect on the sensory cortex of the brain.
b. Codeine suppresses cough because it has a depressant effect on the cough center in the medulla.
c. Codeine suppresses cough because it provides local anesthesia on stretch receptors in the lungs.
d. Codeine suppresses cough because it stimulates the limbic system of the brain.
ANS: B
Codeine is a narcotic analgesic that inhibits cough by depressing the cough center in the medulla.
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