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A client with cirrhosis is at risk for bleeding. Which laboratory test is most important to monitor?
- A. Blood glucose
- B. Serum creatinine
- C. Prothrombin time (PT)
- D. Electrolytes
Correct Answer: C
Rationale: The correct answer is C: Prothrombin time (PT). In cirrhosis, the liver's ability to produce clotting factors is impaired, leading to a higher risk of bleeding. Monitoring PT helps assess the liver's synthetic function and the blood's ability to clot. Abnormal PT values indicate a higher bleeding risk and guide interventions like vitamin K or blood products. Blood glucose (A), serum creatinine (B), and electrolytes (D) do not directly reflect the liver's synthetic function or clotting status in cirrhosis, making them less relevant for monitoring bleeding risk.
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In a patient with chronic kidney disease (CKD) receiving erythropoietin therapy, what laboratory result should the nurse monitor to evaluate the effectiveness of this therapy?
- A. Serum creatinine
- B. White blood cell count
- C. Hemoglobin level
- D. Serum potassium
Correct Answer: C
Rationale: Rationale: The correct answer is C, hemoglobin level. Erythropoietin therapy is used to stimulate red blood cell production in CKD patients with anemia. Monitoring hemoglobin levels helps assess the effectiveness of the therapy in improving anemia. If hemoglobin levels increase, it indicates the therapy is working.
Summary of incorrect choices:
A: Serum creatinine - This measures kidney function, not the effectiveness of erythropoietin therapy for anemia in CKD patients.
B: White blood cell count - Monitors immune function, not related to erythropoietin therapy for anemia.
D: Serum potassium - Important for monitoring electrolyte balance in CKD patients but not specific to assessing erythropoietin therapy effectiveness.
A patient with heart failure is prescribed digoxin. What is the most important instruction the nurse should provide?
- A. Take an extra dose if you miss one.
- B. Avoid high-potassium foods.
- C. Report any visual disturbances.
- D. Stop taking the medication if your pulse is normal.
Correct Answer: C
Rationale: The correct answer is C: Report any visual disturbances. This is important because digoxin can cause visual disturbances, such as blurred or yellow-tinted vision, which may indicate toxicity. By reporting these symptoms promptly, the nurse can prevent serious complications.
A: Taking an extra dose if a dose is missed can lead to overdose and toxicity.
B: Avoiding high-potassium foods is important for patients taking potassium-sparing diuretics, not digoxin.
D: Stopping the medication if the pulse is normal is incorrect as it should be taken as prescribed for heart failure management.
A client with a new diagnosis of myasthenia gravis is prescribed pyridostigmine (Mestinon). Which instruction should the nurse include in the client's teaching?
- A. Take the medication with food to prevent gastrointestinal upset.
- B. Take the medication 30 minutes before meals.
- C. Avoid dairy products while taking this medication.
- D. Take the medication at bedtime.
Correct Answer: B
Rationale: The correct answer is B: Take the medication 30 minutes before meals. Pyridostigmine is a cholinesterase inhibitor used to treat myasthenia gravis by improving muscle strength. Taking it before meals helps optimize its effects when muscle strength is needed the most during eating. Taking it with food (A) may delay absorption. Avoiding dairy products (C) is not necessary with pyridostigmine. Taking the medication at bedtime (D) may not be optimal for addressing muscle weakness during meal times.
A patient with anemia is prescribed ferrous sulfate. What advice should the nurse give regarding the administration of this medication?
- A. Take with dairy products to increase absorption.
- B. Take on an empty stomach for best absorption.
- C. Avoid vitamin C while taking this medication.
- D. Take before bedtime.
Correct Answer: B
Rationale: The correct answer is B: Take on an empty stomach for best absorption. Ferrous sulfate is best absorbed on an empty stomach to maximize its effectiveness. When taken with food or dairy products (Choice A), the absorption of iron is reduced. Vitamin C actually enhances the absorption of iron, so avoiding it (Choice C) is not recommended. Taking the medication before bedtime (Choice D) may lead to gastrointestinal side effects and is not optimal for absorption.
A patient with hyperlipidemia is prescribed atorvastatin. What lab test should be monitored periodically to assess for adverse effects?
- A. Liver function tests
- B. Complete blood count
- C. Blood glucose levels
- D. Serum potassium
Correct Answer: A
Rationale: Step-by-step rationale:
1. Atorvastatin is a statin medication commonly known to potentially cause liver damage.
2. Monitoring liver function tests periodically helps assess for any liver abnormalities.
3. Elevated liver enzymes may indicate liver injury from atorvastatin.
4. Monitoring liver function tests allows for early detection and management of adverse effects.
Summary:
A: Monitoring liver function tests is crucial due to atorvastatin's potential hepatotoxicity.
B: Complete blood count is not typically affected by atorvastatin.
C: Blood glucose levels are not directly related to atorvastatin use.
D: Serum potassium is not specifically monitored for atorvastatin-related adverse effects.