The nurse has given 800mg of a medication that has an 8-hour half-life. How much of the medication will remain in the client's body 24 hours after administration if no additional medication is given?
50 mg
200 mg
100 mg
400 mg
The Correct Answer is C
A half-life is the time it takes for the concentration of a drug in the body to decrease by half. In this case, the medication has an 8-hour half-life, so after 8 hours, the concentration of the medication in the client's body would be reduced to 400mg (half of the initial dose of 800mg). After another 8 hours (16 hours total), the concentration would be reduced to 200mg. After another 8 hours (24 hours total), the concentration would be reduced to 100mg.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
An accidental administration of a dose greater than recommended can result in toxicity. This means that the medication reaches harmful levels in the body and can cause damage to organs or other adverse effects.
Option A is incorrect because an overdose is more likely to increase side effects rather than decrease them.
Option B is incorrect because a lowered therapeutic threshold means that a lower dose of medication is needed to achieve the desired effect, which is not related to an overdose.
Option D is incorrect because an overdose can increase the effectiveness of the medication to dangerous levels, rather than decrease it.
Correct Answer is A
Explanation
Carbidopa/levodopa is a medication used to treat the symptoms of Parkinson's disease, including tremors, stiffness, and difficulty with movement. If the medication is effective, the client should show improvement in their ability to move and perform daily activities. In this case, the client being able to walk upright without stumbling indicates that the medication is effective.
Option B is incorrect because eating 30% to 40% of meals within 1 hour is not related to the effectiveness of carbidopa/levodopa.
Option C is incorrect because displaying emotions when discussing the illness is not related to the effectiveness of carbidopa/levodopa.
Option D is incorrect because cogwheel motion when swinging the arms is a symptom of Parkinson's disease and would indicate that the medication is not effective.
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