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1. A patient with hyperthyroidism is prescribed propylthiouracil (PTU). What is the primary purpose of this medication?
- A. Increase thyroid hormone production
- B. Suppress thyroid hormone production
- C. Enhance iodine absorption
- D. Stimulate the thyroid gland
Correct answer: B
Rationale: Propylthiouracil (PTU) is a medication used to treat hyperthyroidism by suppressing the production of thyroid hormones. It works by inhibiting the enzyme responsible for the synthesis of thyroid hormones, thereby reducing their levels in the body. This helps to alleviate the symptoms of hyperthyroidism and restore thyroid hormone levels to normal range.
2. A client with type 1 diabetes mellitus is admitted with hyperglycemia. Which laboratory result requires the most immediate intervention?
- A. Serum glucose of 350 mg/dL.
- B. Serum potassium of 2.8 mEq/L.
- C. Serum sodium of 136 mEq/L.
- D. Serum bicarbonate of 20 mEq/L.
Correct answer: B
Rationale: A serum potassium level of 2.8 mEq/L is critically low and can cause cardiac arrhythmias, requiring immediate intervention. Hypokalemia is a life-threatening condition that needs prompt correction to prevent serious complications. High serum glucose levels (choice A) are a concern in diabetes but do not pose an immediate life-threatening risk compared to severe hypokalemia. Serum sodium (choice C) and serum bicarbonate levels (choice D) are within normal ranges and do not require immediate intervention.
3. For a patient with asthma, what is the primary purpose of prescribing salmeterol?
- A. Relieve acute bronchospasm
- B. Prevent asthma attacks
- C. Suppress cough
- D. Thin respiratory secretions
Correct answer: B
Rationale: Salmeterol is classified as a long-acting beta2-agonist, which is used to prevent asthma attacks by providing extended bronchodilation. It is not typically used for immediate relief of acute bronchospasm or for suppressing cough. Additionally, salmeterol does not have the primary purpose of thinning respiratory secretions.
4. A client with heart failure is prescribed digoxin (Lanoxin). Which sign of digoxin toxicity should the nurse teach the client to report?
- A. Increased appetite.
- B. Yellow or blurred vision.
- C. Weight gain.
- D. Nasal congestion.
Correct answer: B
Rationale: Yellow or blurred vision is a hallmark sign of digoxin toxicity. Digoxin toxicity can affect various body systems, but visual disturbances, such as yellow or blurred vision, are important signs that the client should report immediately. Other signs like increased appetite, weight gain, or nasal congestion are not typically associated with digoxin toxicity. Prompt reporting of visual disturbances can help prevent further complications associated with digoxin toxicity.
5. Which problem in a client requires the most immediate intervention by the nurse?
- A. Finger paresthesias related to carpal tunnel syndrome.
- B. Increasing sharp pain related to compartment syndrome.
- C. Increasing burning pain related to a Morton's neuroma.
- D. Increasing sharp pain related to plantar fasciitis.
Correct answer: B
Rationale: The correct answer is B: Increasing sharp pain related to compartment syndrome. Compartment syndrome is a serious condition where increased pressure within a muscle compartment compromises circulation and can lead to tissue damage. Immediate intervention is crucial to prevent permanent damage to muscles and nerves, including tissue necrosis and nerve injury. Choices A, C, and D do not present the same level of urgency as compartment syndrome, making them less critical for immediate intervention. Carpal tunnel syndrome, Morton's neuroma, and plantar fasciitis may cause discomfort and functional limitations but are not typically considered emergencies requiring urgent intervention like compartment syndrome.
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