The healthcare provider changes a patient’s prescription of warfarin from 5.0 mg to 7.5 mg PO for thromboembolic unit.
The medication available on the unit is 2.5 mg per tablet and the patient already received two tablets.
How many additional tablets should the Practical Nurse (PN) administer to complete the newly prescribed dose? (Enter the numerical value only.
If rounding is required, round to the whole number.)
The Correct Answer is ["1"]
Step 1 is: Calculate the total amount of warfarin required. The healthcare provider has prescribed 7.5 mg of warfarin.
Step 2 is: Subtract the amount of warfarin already administered. The patient has already received 2 tablets, each containing 2.5 mg of warfarin, for a total of 5 mg.
Step 3 is: Calculate the additional amount of warfarin required. The total amount required (7.5 mg) minus the amount already administered (5 mg) equals 2.5 mg.
Step 4 is: Determine the number of additional tablets required. Since each tablet contains 2.5 mg of warfarin, the patient should receive 1 additional tablet.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Pill-rolling hand motions are a common symptom of Parkinson’s disease. This is a type of tremor where the thumb and fingers rub together in a circular motion as if rolling a pill. This is not a contraindication to administering carbidopa-levodopa.
Choice B rationale
Anorexia, or loss of appetite, could be a sign of a more serious underlying condition or a side effect of the medication. This would require further assessment before administering the medication.
Choice C rationale
A flat affect, or reduced emotional expressiveness, is another common symptom of Parkinson’s disease. This would not typically require further assessment before administering carbidopa- levodopa.
Choice D rationale
Dizziness can be a side effect of carbidopa-levodopa. However, it would not typically require further assessment before administering the medication unless it was severe or persistent.
Correct Answer is B
Explanation
Answer and explanation
The correct answer is B. If chest pain is not relieved after taking one nitroglycerin tablet three
times at 5-minute intervals, call the emergency medical service (EMS).
Choice A rationale
While flushing, dizziness, and general body warmth can occur with each sublingual tablet
taken, these are side effects of the medication and not the primary intended effect. The main
purpose of nitroglycerin is to relieve chest pain associated with angina.
Choice B rationale
This is the most important instruction. Nitroglycerin is used to treat episodes of angina. If
chest pain is not relieved after taking one nitroglycerin tablet three times at 5-minute
intervals, it could indicate a more serious condition, such as a heart attack. In this case,
immediate medical attention is necessary.
Choice C rationale
A pounding headache is a common side effect of both the nitroglycerin patch and the
sublingual tablets. However, the presence of a headache does not indicate whether the
medication is effectively treating angina.
Choice D rationale
While it’s true that nitroglycerin patches are used for long-term prevention and sublingual
tablets are used for acute attacks, this is general information about the medication and not the
most important instruction for a patient who has been prescribed nitroglycerin.
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