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

Answer and Explanation

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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Correct Answer is C

Explanation

The nurse would want to have ﬂumazenil readily available in case benzodiazepine reversal is needed. Flumazenil is a medication used to reverse the effects of benzodiazepines such as lorazepam ¹. It can be used to help a person wake up after a medical procedure in which a benzodiazepine was used as a sedative or to treat a benzodiazepine overdose ¹.
Option A is incorrect because physostigmine is not used to reverse the eﬀects of benzodiazepines.
Option B is incorrect because naloxone is used to reverse the effects of opioids, not benzodiazepines.
Option D is incorrect because syrup of ipecac is not used to reverse the eﬀects of benzodiazepines.

A. A molecule that prevents receptor activation by other medications B. An endogenous molecule or a medication that can activate a receptor C. A medication that increases the affinity of a receptor for a diﬀerent medication D. A therapeutic agent that both blocks and activates a receptor

Correct Answer is B

Explanation

An agonist is a molecule that can bind to and activate a receptor to induce a biological response ³. Agonists can be endogenous molecules, such as hormones or neurotransmitters, or medications that mimic the action of endogenous agonists ³.
Option A is incorrect because an agonist does not prevent receptor activation by other medications.
Option C is incorrect because an agonist does not increase the affinity of a receptor for a diﬀerent medication.
Option D is incorrect because an agonist does not both block and activate a receptor.

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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?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A client child accidentally ingested her mother's lorazepam and the child is now very sleepy. Which of these medications would the nurse want to have readily available in case benzodiazepine reversal is needed?

Correct Answer is C

Explanation

Which of the following describes the action of an agonist?

Correct Answer is B

Explanation

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