Nursing Elites

1. A nurse is caring for a client who has a new prescription for levothyroxine. Which of the following laboratory values should the nurse monitor to determine the effectiveness of the medication?

• A. Calcium
• B. Sodium
• C. Thyroid-stimulating hormone (TSH)
• D. Magnesium

Correct answer: C

Rationale: The correct answer is C: Thyroid-stimulating hormone (TSH). Monitoring TSH levels is crucial to assess the effectiveness of levothyroxine in clients with hypothyroidism. TSH is produced by the pituitary gland and stimulates the thyroid gland to produce thyroid hormones. In hypothyroidism, where the thyroid gland is underactive, administering levothyroxine helps to normalize thyroid hormone levels. Monitoring TSH levels allows the healthcare provider to adjust the levothyroxine dosage to ensure that thyroid hormone levels are within the therapeutic range. Choices A, B, and D (Calcium, Sodium, and Magnesium) are not directly related to assessing the effectiveness of levothyroxine therapy in hypothyroidism and would not provide relevant information regarding the medication's efficacy.

2. Which lab value is essential for a patient receiving warfarin therapy?

• A. Monitor INR
• B. Monitor sodium levels
• C. Monitor potassium levels
• D. Monitor platelet count

Correct answer: A

Rationale: The correct answer is to monitor the INR (International Normalized Ratio) for a patient receiving warfarin therapy. INR monitoring is crucial to assess the effectiveness of warfarin in preventing blood clots while minimizing the risk of bleeding. Monitoring sodium levels (choice B), potassium levels (choice C), or platelet count (choice D) is not specifically essential for patients on warfarin therapy and does not provide direct information on the drug's anticoagulant effects.

3. A healthcare provider is reviewing the laboratory report of a client with a prescription for digoxin. Which result requires withholding the medication?

• A. Digoxin 0.8 ng/mL
• B. Sodium 145 mEq/L
• C. BUN 20 mg/dL
• D. Potassium 3.1 mEq/L

Correct answer: D

Rationale: The correct answer is D. A low potassium level (3.1 mEq/L) can increase the risk of digoxin toxicity. Hypokalemia can potentiate the effects of digoxin on the heart, leading to serious dysrhythmias. Choices A, B, and C are within normal ranges and do not indicate a need to withhold digoxin.

4. A nurse is planning care for a client who has diabetes insipidus and is receiving desmopressin. Which of the following should the nurse monitor?

• A. Fasting blood glucose
• B. Carbohydrate intake
• C. Hematocrit
• D. Weight

Correct answer: D

Rationale: The correct answer is D: Weight. Weight monitoring is essential to assess the effectiveness of desmopressin therapy, as fluid retention is a common side effect. Monitoring fasting blood glucose (choice A) is not directly related to desmopressin therapy for diabetes insipidus. Monitoring carbohydrate intake (choice B) may be important in diabetes management but is not specific to desmopressin therapy. Hematocrit (choice C) monitoring is not a primary concern when managing diabetes insipidus with desmopressin.

5. A nurse is caring for a client who is receiving furosemide. Which of the following laboratory values should the nurse monitor to evaluate the effectiveness of the medication?

• A. Serum sodium.
• B. Serum glucose.
• C. Serum potassium.
• D. Serum calcium.

Correct answer: C

Rationale: The correct answer is C: Serum potassium. Furosemide is a potassium-wasting diuretic, meaning it can lead to potassium loss in the body. Monitoring serum potassium levels is crucial to evaluate the effectiveness of furosemide and prevent hypokalemia. Options A, B, and D are incorrect because furosemide does not directly affect sodium, glucose, or calcium levels in the same way it impacts potassium levels.

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