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 D
Explanation
Choice A rationale
Platelet count measures the number of platelets in the blood, which are essential for blood clotting. However, it is not specific to monitoring the anticoagulant effects of warfarin.
Choice B rationale
Activated thromboplastin time (APT) measures the intrinsic pathway of coagulation and is typically used to monitor heparin therapy, not warfarin.
Choice C rationale
Red blood count (RBC) measures the number of red blood cells in the blood, which can indicate anemia but is unrelated to the anticoagulant effects of warfarin.
Choice D rationale
Prothrombin time (PT) and international normalized ratio (INR) are specific tests used to monitor the anticoagulant effects of warfarin. PT measures the time it takes for blood to clot, and INR standardizes this measurement to ensure consistency across different laboratories.
Correct Answer is B
Explanation
Choice A rationale
Improved mental status can be a sign of better overall health but is not a specific indicator of improved heart failure status.
Choice B rationale
Using fewer pillows at night indicates reduced orthopnea, a common symptom of heart failure, suggesting that the patient’s heart failure status has improved.
Choice C rationale
Increased skin turgor indicates improved hydration status but is not a specific measure of heart failure improvement.
Choice D rationale
Heart rate regularity is important but does not directly indicate improved heart failure status.
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