Which of the following medication acts as an antagonist on mu receptors and agonists of kappa receptors?
Morphine Sulfate (Astramorph)
Naloxone (Narcan
Butorphanol Stado
Acetaminophen (scenc)
The Correct Answer is C
A. Morphine is a full agonist on mu receptors and does not act on kappa receptors in the same way.
B. Naloxone is an opioid antagonist that blocks both mu and kappa receptors.
C. Butorphanol is a mixed opioid agonist-antagonist that acts as an agonist on kappa receptors and an antagonist on mu receptors. It is used for pain management and has a lower risk of dependence compared to full opioid agonists.
D. Acetaminophen does not act on opioid receptors and is not classified as an opioid.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Indigestion is not a severe side effect, although it can be uncomfortable; it is not an indication to stop the medication.
B. Weight gain is not a common or serious adverse effect of sumatriptan.
C. Persistent chest pain is a serious adverse effect of sumatriptan, as it can indicate a cardiovascular event such as angina or a heart attack. The client should stop taking the medication and seek immediate medical attention.
D. Nausea may occur with sumatriptan use but is not a serious adverse effect unless it is accompanied by other severe symptoms.
Correct Answer is A
Explanation
A. Cyclobenzaprine (Flexeril) is a muscle relaxant used to relieve muscle spasms caused by muscle injury. It works by acting on the central nervous system to reduce muscle tone.
B. Cyclobenzaprine is not effective for spasticity related to conditions like cerebral palsy, spinal cord injury, or multiple sclerosis; other medications like baclofen are more appropriate for spasticity.
C. Cyclobenzaprine is not used to treat malignant hyperthermia. This condition is treated with dantrolene.
D. Cyclobenzaprine does not treat postmenopausal osteoporosis, which is typically managed with medications like bisphosphonates (e.g., alendronate).
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