NCLEX Question for Mu opioids

NCLEX Review Question
Mu opioids have which of the following effects on respiratory rate:

a.Stimulation, then depression
b.No change
c.Stimulation, only
d.Depression, only

Correct Answer: A
Stimulation, then depression
Rationale: Mu opioids also cause bradycardia, hypothermia, and constipation.

No change
Rationale: Kappa opioids result in no change in respiratory rate.

Stimulation, only
Rationale: Delta opioids result in stimulation of respiratory rate.

Depression, only
Rationale: Neither mu, nor kappa, nor delta opoids depress respiratory rate as its only effect upon respiratory rate.

Posted in: MSN NCLEX