The nurse understands that the length of time needed for a drug to reach the minimum effective concentration (MEC) is the

Duration of action.

Onset of action.

Peak action time.

Time response curve.

Answer and Explanation

The Correct Answer is B

A. Duration of action refers to the length of time a drug remains effective after reaching the MEC, but it does not describe the time required to reach this threshold.

B. Onset of action is the time it takes for a drug to reach the minimum effective concentration (MEC) and begin producing a therapeutic effect. This is influenced by factors such as drug absorption and distribution.

C. Peak action time refers to the time at which the drug reaches its highest concentration in the bloodstream, not the time required to reach the MEC.

D. The time response curve is a graphical representation of a drug's effects over time but does not specifically define the time needed to reach the MEC.

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Correct Answer is C

Explanation

a) Noncompliance due to cost might be a concern for some patients, but it does not directly relate to the sedative effects of the drug.

b) Deficient knowledge could be relevant if the patient is unaware of the potential sedative effects, but the immediate concern is more focused on the potential for injury due to sedation.

c) Risk for injury is the priority nursing diagnosis in this scenario because sedation can impair the patient's ability to perform tasks safely, increasing the risk for falls or other injuries. This is particularly important for elderly patients, who are more vulnerable to the sedative effects of medications.

d) Ineffective health maintenance refers to issues with ongoing health practices, but it is less directly related to the immediate risk posed by the sedative effects of the medication.

A. Ask another nurse to observe and cosign wasting the remaining drug from the vial. B. Keep the remaining amount in the patient’s drawer to give at the next dose. C. Record the amount unused in the patient’s chart. D. Dispose of the vial with the remaining drug into a locked collection box.

Correct Answer is A

Explanation

A. Schedule II drugs are controlled substances with a high potential for abuse. Proper disposal requires a witness, usually another nurse, to verify and cosign the waste to ensure accountability and prevent diversion.

B. Keeping the remaining drug in the patient’s drawer is unsafe and violates controlled substance regulations. Single-use vials should not be stored for later use.

C. While documentation of administered medication is necessary, simply recording the unused amount in the patient’s chart is insufficient. Controlled substances require proper disposal with a witness.

D. Controlled substances cannot be discarded in a general locked collection box without proper witnessing and documentation. The correct procedure is to have another nurse verify and cosign the waste before disposal.

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The nurse understands that the length of time needed for a drug to reach the minimum effective concentration (MEC) is the

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Naxlex Comprehensive Predictor Exams

A 70-year-old patient has just received a drug that can cause sedation. What would be the priority nursing diagnosis for this patient?

Correct Answer is C

Explanation

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Correct Answer is A

Explanation

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The six rights of medication administration is: