A home care nurse administers oral morphine to the patient with cancer pain.
When will the nurse expect the medication to reach peak activity?
45 minutes.
10 minutes.
30 minutes.
60 minutes.
The Correct Answer is A
Choice A rationale
Oral morphine typically reaches peak activity at around 45 minutes after administration. This allows time for the medication to be absorbed through the gastrointestinal tract and enter the bloodstream to provide pain relief.
Choice B rationale
10 minutes is too short for oral morphine to reach peak activity. This timeframe is more consistent with intravenous administration, which allows for rapid onset of action.
Choice C rationale
30 minutes is a bit too short for oral morphine to reach peak effect, although some patients may start to feel relief. However, peak plasma concentrations generally occur closer to 45-60 minutes.
Choice D rationale
While morphine can continue to have effects up to 60 minutes and beyond, the peak activity is typically observed around the 45-minute mark. Waiting for 60 minutes may underestimate the peak timeframe.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
The small intestine is where nutrients are absorbed, but it is not where vitamin D is activated. Vitamin D is first converted in the liver and then activated in the kidneys to promote calcium absorption.
Choice B rationale
This is incorrect because vitamin D is activated into a form that promotes calcium absorption. The active form is crucial for maintaining calcium and phosphate levels in the blood.
Choice C rationale
The kidneys play a significant role in converting vitamin D to its active form, calcitriol. This activated form is essential for the absorption of calcium in the intestines.
Choice D rationale
The large intestine is involved in water absorption and waste formation but not in the activation of vitamin D. The activation process primarily occurs in the kidneys and liver. .
Correct Answer is C
Explanation
Choice A rationale
Checking vitamin K levels doesn't directly monitor warfarin's effect.
Choice B rationale
PTT and aPTT assess heparin, not warfarin.
Choice C rationale
INR specifically measures warfarin's effectiveness and safety.
Choice D rationale
Platelet levels don't monitor the anticoagulant effect of warfarin.
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