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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: The correct answer is B: Suppress thyroid hormone production. PTU is an antithyroid medication used to inhibit the synthesis of thyroid hormones, effectively suppressing their production. This helps to manage hyperthyroidism by reducing excessive levels of thyroid hormones in the body. Choices A, C, and D are incorrect as PTU does not aim to increase hormone production, enhance iodine absorption, or stimulate the thyroid gland. Understanding the mechanism of action of PTU is crucial in recognizing its primary purpose in treating hyperthyroidism.
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A client is being discharged with a new prescription for enoxaparin (Lovenox). Which instruction should the nurse include?
- A. Administer the injection in your thigh.
- B. Do not expel the air bubble from the syringe before injection.
- C. Massage the injection site after administration.
- D. Alternate the injection site between the arms.
Correct Answer: B
Rationale: The correct answer is B because expelling the air bubble from the syringe before injection helps ensure accurate dosage delivery and prevents air from being injected into the patient. Administering the injection in the thigh (A) is incorrect as enoxaparin is typically given in the abdomen. Massaging the injection site (C) can cause bruising or hematoma formation. Alternating injection sites between arms (D) is not relevant as enoxaparin is usually given in the abdomen.
A patient with rheumatoid arthritis is prescribed methotrexate. What is an important teaching point for the nurse to provide?
- A. Take folic acid supplements as prescribed.
- B. Avoid alcohol completely.
- C. Expect to see immediate results.
- D. Limit fluid intake to 1 liter per day.
Correct Answer: A
Rationale: The correct answer is A: Take folic acid supplements as prescribed. Methotrexate can lead to folic acid deficiency, causing side effects. Supplementing with folic acid can help manage these side effects. It is crucial for the nurse to emphasize the importance of taking folic acid as prescribed to prevent adverse effects.
Summary of Incorrect Choices:
B: Avoid alcohol completely - While alcohol should be limited or avoided due to potential liver toxicity with methotrexate, complete avoidance may not be necessary for all patients.
C: Expect to see immediate results - Methotrexate takes time to work, and patients should not expect immediate results. Patience is necessary.
D: Limit fluid intake to 1 liter per day - There is no specific guideline to limit fluid intake with methotrexate. Adequate hydration is important for overall health.
Aspirin is prescribed for a 9-year-old child with rheumatic fever to control the inflammatory process, promote comfort, and reduce fever. What intervention is most important for the nurse to implement?
- A. Instruct the parents to hold the aspirin until the child has first had a tepid sponge bath.
- B. Administer the aspirin with at least two ounces of water or juice.
- C. Notify the healthcare provider if the child complains of ringing in the ears.
- D. Advise the parents to question the child about seeing yellow halos around objects.
Correct Answer: C
Rationale: The correct answer is C: Notify the healthcare provider if the child complains of ringing in the ears. This is important because ringing in the ears can be a sign of salicylate toxicity, a potential side effect of aspirin use in children with rheumatic fever. It is crucial to monitor for this symptom to prevent serious complications.
A: Instructing the parents to hold the aspirin until the child has a tepid sponge bath is not the most important intervention. Managing salicylate toxicity takes precedence over comfort measures.
B: Administering the aspirin with at least two ounces of water or juice is a general guideline for medication administration but not the most critical intervention in this scenario.
D: Advising the parents to question the child about seeing yellow halos around objects is not directly related to the potential side effects of aspirin in this case. Monitoring for salicylate toxicity through symptoms like ringing in the ears is more crucial.
A patient with chronic heart failure is prescribed furosemide. What is the primary action of this medication?
- A. Increase cardiac output
- B. Reduce fluid retention
- C. Decrease heart rate
- D. Lower blood pressure
Correct Answer: B
Rationale: The correct answer is B: Reduce fluid retention. Furosemide is a loop diuretic that works by increasing urine production, leading to the removal of excess fluid and sodium from the body. This helps reduce fluid volume overload in conditions like heart failure. Choice A is incorrect because while reducing fluid retention may indirectly improve cardiac output by reducing preload, furosemide itself does not directly increase cardiac output. Choice C is incorrect as furosemide does not have a direct effect on heart rate. Choice D is incorrect because while furosemide may lower blood pressure as a result of reducing fluid volume, its primary action is to reduce fluid retention, not specifically lower blood pressure.
A patient with diabetes insipidus is prescribed desmopressin. What is the primary purpose of this medication?
- A. Increase urine output
- B. Reduce blood sugar levels
- C. Decrease urine output
- D. Lower blood pressure
Correct Answer: C
Rationale: Desmopressin is a synthetic form of vasopressin used to replace the hormone in diabetes insipidus. The primary purpose is to decrease urine output by increasing water reabsorption in the kidneys, thereby reducing excessive urination and preventing dehydration. Choice A is incorrect as desmopressin actually decreases urine output. Choice B is incorrect as desmopressin does not directly affect blood sugar levels. Choice D is incorrect as desmopressin does not primarily lower blood pressure.