A nurse is caring for a client who has a prescription for levothyroxine.
Which of the following laboratory tests should the nurse monitor?
Serum potassium
Triiodothyronine
Blood urea nitrogen
Prothrombin time
The Correct Answer is B
Explanation B.Triiodothyronine
Levothyroxine is a synthetic form of the thyroid hormone thyroxine (T4). It is converted to triiodothyronine (T3), the active form of the thyroid hormone, in the body. Monitoring the levels of triiodothyronine (T3) can help assess the effectiveness of levothyroxine therapy and ensure that the client's thyroid hormone levels are within the desired therapeutic range.
Serum potassium levels in (option A) should not be monitored because they are not directly affected by levothyroxine. However, imbalances in electrolytes can occur in some individuals with thyroid disorders. Electrolyte levels may be monitored, but it is not the primary focus of monitoring for levothyroxine therapy.
Blood urea nitrogen (BUN) in (option C) should not be monitored because it is a test used to assess kidney function and is not directly related to monitoring levothyroxine therapy.
Prothrombin time (PT) in (option D) should not be monitored because it is a test used to evaluate the clotting function of the blood and is not specifically related to monitoring levothyroxine therapy.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Correct answer: B
A.Family presence can provide comfort and support to the toddler, making mealtimes a more positive experience. It can also encourage the child to eat more by setting a good example. However, without first understanding the child's dietary habits and possible issues, this intervention might not address the root cause of the poor intake.
B.The nurse’sfirst actionin caring for a toddler with poor dietary intake should be toobtain the child’s dietary history. Understanding the child’s current eating habits, preferences, and any potential barriers to adequate nutrition is essential for planning appropriate interventions. Once the dietary history is obtained, the nurse can tailor further actions based on the specific needs of the child.
C.Offering nutritious snacks can help increase the child's overall calorie and nutrient intake, which is particularly important if the child has a low appetite during regular meals. Nevertheless, this step should follow the assessment of the child's dietary history to ensure that the snacks offered are appropriate and to avoid potential allergies or intolerances.
D.Positive reinforcement can encourage healthy eating behaviors and make mealtime a more enjoyable experience for the child. Praising the child can motivate them to eat more. However, this should be done after understanding the child's eating patterns and preferences to ensure that the praise is given in a context that promotes effective and lasting change.
Correct Answer is C
Explanation
Assessing the client's suicidal intent and the presence of a specific plan for self-harm is crucial in determining the level of immediate risk and the need for intervention. This question directly addresses the client's current state and potential danger.
While all the questions are important in assessing the client's situation, determining the presence of a plan for self-harm takes precedence as it helps evaluate the level of imminent danger and the need for immediate intervention.
The other questions are also important but can be addressed after ensuring the client's safety and appropriate intervention based on the information gathered regarding the plan for self-harm. These questions can provide additional information to further assess the client's support system, history, and current stressors, which can contribute to understanding the context and potential risk factors for the client.
Remember, if the client expresses an immediate plan and intent for self-harm, it is essential to take appropriate steps to ensure their safety, such as involving the appropriate mental health professionals, implementing a safety plan, and providing constant supervision as needed.
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