Naloxone is effective because of which action?
Increasing the excretion of morphine sulfate by altering serum pH.
Preventing activation of opioid receptors through antagonist actions.
Regulating the sensitivity of opioid receptors by neurochemical alterations.
Countering the effects of morphine sulfate by agonist actions.
The Correct Answer is B
a) Naloxone does not increase the excretion of opioids by altering serum pH; its primary action is at the receptor level.
b) Naloxone is an opioid receptor antagonist, meaning it blocks or prevents the activation of opioid receptors. This is how it counteracts the effects of opioids like morphine.
c) Naloxone does not regulate the sensitivity of opioid receptors by neurochemical alterations. Its action is more direct as an antagonist.
d) Naloxone is not an agonist; it does not produce opioid-like effects. Instead, it competes with opioids for receptor binding and blocks their effects.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
a) Insulin glargine is a long-acting basal insulin and is not typically administered before each meal.
b) Administering insulin glargine after meals is not the standard practice. It is given once daily to provide a continuous basal insulin level.
c) Insulin glargine is a once-daily basal insulin that is usually administered at the same time every day to maintain a consistent level of insulin in the body.
d) Unlike short-acting insulins, insulin glargine is not given with meals but provides a basal level of insulin throughout the day.
Correct Answer is A
Explanation
a) St. John's Wort is known to increase the risk of bleeding, particularly when used in conjunction with anticoagulant medications. This effect is of concern and may require adjustments in the treatment plan.
b) While St. John's Wort can interact with various drugs, increasing the risk of bleeding is a more immediate concern.
c) St. John's Wort does not counteract the effects of CNS depressants; it may actually enhance the effects of these drugs.
d) St. John's Wort is known to induce the metabolism of some drugs, potentially reducing their effectiveness, but the immediate concern is the risk of bleeding.
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