A nurse is teaching a class about pharmacodynamics. The nurse should include that which of the following medication levels occurs when a medication is at the lowest serum concentration?
Half-life
Peak
Toxic
Trough
The Correct Answer is D
D) Trough:
The trough level of a medication is the lowest concentration of the drug in the bloodstream before the next dose is administered. Monitoring the trough level helps ensure that the medication stays within a therapeutic range, minimizing the risk of toxicity and ensuring effectiveness.
A) Half-life:
Half-life refers to the time it takes for the concentration of a drug in the blood to decrease by half. It is related to how long the drug stays in the system but does not specifically indicate the lowest concentration.
B) Peak:
The peak level is the highest concentration of the drug in the bloodstream after administration. It is used to assess the maximum effect of the drug, not the lowest concentration.
C) Toxic:
Toxic level refers to the concentration of a drug at which it can cause adverse effects or toxicity. It is not related to the lowest concentration but rather to potentially harmful levels.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) The client wears fitted slippers:
Fitted slippers generally provide good support and are less likely to contribute to falls compared to loose or ill-fitting footwear. Therefore, this finding is less likely to be a major contributor to the client’s falls.
B) The client takes alprazolam:
Alprazolam is a benzodiazepine that can cause sedation, dizziness, and impaired coordination. These side effects can significantly increase the risk of falls, especially in older adults. Thus, this medication is a likely contributor to the client's falls.
C) The client has a nonslip bath mat in his shower:
A nonslip bath mat is a safety measure designed to prevent falls in the shower. Its presence suggests a proactive approach to reducing fall risk, so it is less likely to be contributing to the problem.
D) The client uses a raised toilet seat:
A raised toilet seat can be a helpful adaptation for individuals with mobility issues, making it easier to sit down and stand up. It is generally not associated with an increased risk of falls, so this finding is unlikely to be contributing to the client’s falls.
Correct Answer is C
Explanation
A) Ataxia:
Ataxia is not a classic symptom of digoxin toxicity. It is more commonly associated with other neurological conditions or medications.
B) Photosensitivity:
Photosensitivity is not typically linked to digoxin toxicity. It is more often associated with certain other medications or conditions.
C) Anorexia:
Anorexia is a common early symptom of digoxin toxicity. It often accompanies other signs such as nausea, vomiting, and visual disturbances. Early recognition of these symptoms is crucial for prompt management of toxicity.
D) Jaundice:
Jaundice is not a common manifestation of digoxin toxicity. It is generally related to liver conditions or issues affecting bilirubin metabolism.
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