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 C
Explanation
During an external chemical disaster, it is crucial to minimize the exposure of clients to the hazardous substance. Moving clients to a room above ground level with few windows can help reduce the risk of exposure to the chemical and its fumes. This is because many hazardous chemicals tend to be denser than air and may settle closer to the ground. Choosing a room above ground level and with fewer windows can provide a safer environment.
Turning on fans in the facility to circulate air can actually worsen the situation by spreading the chemical and its fumes throughout the facility, potentially exposing more individuals.
Covering the electrical outlets with wet towels is not directly related to preparing for an external chemical disaster. It may be more relevant during a fire emergency to prevent the spread of flames, but not for chemical exposure.
Opening the fireplace dampers in the day room can allow the entry of outside air and potentially introduce more of the hazardous substance into the facility.
Correct Answer is C
Explanation
Fluid overload refers to an excess volume of fluid in the body, which can occur as a result of various factors, including excessive fluid intake or inadequate fluid removal. Crackles heard in the lungs, also known as rales, can indicate fluid accumulation in the lungs, a condition known as pulmonary edema. It is a common manifestation of fluid overload and can be detected through auscultation of the lungs.

Weight loss is typically associated with inadequate calorie or nutrient intake, rather than fluid overload.
Weight loss is typically associated with inadequate calorie or nutrient intake, rather than fluid overload.
Weight loss is typically associated with inadequate calorie or nutrient intake, rather than fluid overload.
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