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 D

Explanation

a) Phase I studies focus on assessing the safety, dosing, and side effects of a drug in healthy volunteers, not its clinical effectiveness or potential new uses.

b) Phase II studies evaluate the drug's effectiveness and safety in a small group of patients with the targeted condition but do not focus on potential new uses.

c) Phase III studies are large-scale trials conducted to confirm the drug's effectiveness and safety before approval but do not typically involve studying new uses of the drug.

d) Phase IV studies occur after a drug has been approved and marketed. These studies, often called post-marketing surveillance, evaluate the drug's effectiveness and safety in the general population and investigate new potential uses or long-term effects.

A. Deficient knowledge related to drug side effects B. Ineffective health maintenance related to age C. Readiness for enhanced knowledge related to medication side effects D. Risk for injury related to side effects of the medication

Correct Answer is D

Explanation

A. Deficient knowledge may be a concern, but the primary focus here is on the safety risk associated with the side effects of the medication, particularly dizziness and orthostatic hypotension, which increase the risk of falls or injury.

B. Ineffective health maintenance is not specific to the medication side effects and does not directly address the patient's safety risk due to the medication.

C. Readiness for enhanced knowledge is more appropriate when the patient is already familiar with their condition and medication and is ready to learn more. This is not the case here, as the focus is on preventing harm from side effects.

D. Risk for injury is the most appropriate nursing diagnosis. Dizziness and orthostatic hypotension increase the risk of falls, which can lead to injury, making this the most relevant concern in this scenario.

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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

Before marketing a new drug that has been approved for use based on clinical effectiveness and safety, the manufacturer wishes to study the potential new uses for the drug. This is an example of which phase of study?

Correct Answer is D

Explanation

The nurse is developing a teaching plan for an elderly patient who will begin taking an antihypertensive drug that causes dizziness and orthostatic hypotension. Which nursing diagnosis is appropriate for this patient?

Correct Answer is D

Explanation

The nurse is caring for an older adult patient who is receiving multiple medications. When monitoring this patient for potential drug toxicity, the nurse should review which lab values closely?

The nurse is preparing to administer a medication and reviews the patient's chart for drug allergies, serum creatinine, and blood urea nitrogen (BUN) levels. The nurse's actions are reflective of which phase of the nursing process?

The nurse, assisting with Phase I drug studies, is talking with a woman who asks, “Why can't I participate in this study”? What would be the nurse's best response?

When administering topical medications, which is an important nursing action?

The nurse gives medication to a patient with a history of liver disease. The nurse will monitor this patient for

When administering topical medications, which is an important nursing action?

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