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1. Which of the following is a common cause of chronic liver disease?
- A. Alcohol abuse.
- B. Hepatitis C infection.
- C. Obesity.
- D. Smoking.
Correct answer: B
Rationale: Hepatitis C infection is a common cause of chronic liver disease due to its long-term effects on the liver. Hepatitis C can lead to liver inflammation, fibrosis, cirrhosis, and even liver cancer. Alcohol abuse can also cause liver damage, but hepatitis C infection is specifically known for its chronic impact on liver health. Obesity and smoking, while detrimental to overall health, are not typically direct causes of chronic liver disease like hepatitis C infection.
2. A client receiving warfarin (Coumadin) therapy should have which of the following laboratory results reviewed to evaluate the effectiveness of the therapy?
- A. Complete blood count (CBC).
- B. Prothrombin time (PT).
- C. International normalized ratio (INR).
- D. Partial thromboplastin time (PTT).
Correct answer: C
Rationale: The correct answer is C: International normalized ratio (INR). The INR is the most appropriate laboratory result to review when evaluating the effectiveness of warfarin (Coumadin) therapy. Warfarin is an anticoagulant medication, and the INR helps determine if the dosage is within a therapeutic range to prevent clotting or bleeding complications. Choice A, a Complete Blood Count (CBC), provides information about the cellular components of blood but does not directly assess the anticoagulant effects of warfarin. Choice B, Prothrombin time (PT), measures the time it takes for blood to clot but is not as specific for monitoring warfarin therapy as the INR. Choice D, Partial Thromboplastin Time (PTT), evaluates the intrinsic pathway of coagulation and is not the primary test used to monitor warfarin therapy.
3. Which lab result would be most indicative of renal failure?
- A. Elevated creatinine levels.
- B. Low potassium levels.
- C. Low calcium levels.
- D. High sodium levels.
Correct answer: A
Rationale: The correct answer is A: Elevated creatinine levels. Creatinine is a waste product that is normally filtered by the kidneys. Elevated creatinine levels indicate impaired kidney function, which is commonly seen in renal failure. Choice B, low potassium levels, is not typically associated with renal failure. In fact, renal failure is more likely to cause high potassium levels due to the kidneys' inability to excrete potassium effectively. Choice C, low calcium levels, are not directly indicative of renal failure. Renal failure can lead to disturbances in calcium levels, but low calcium levels alone are not a specific marker for renal failure. Choice D, high sodium levels, are also not typically associated with renal failure. In renal failure, there may be disturbances in sodium levels, but high sodium levels alone are not a direct indicator of renal failure.
4. A client has just returned to the nursing unit after computerized tomography (CT) with contrast medium. Which of the following actions should the nurse plan to take as part of routine after-care for this client?
- A. Administering a laxative
- B. Encouraging fluid intake
- C. Maintaining the client on strict bed rest
- D. Holding all medications for at least 2 hours
Correct answer: B
Rationale: After CT scanning with contrast medium, the client does not require special restrictions or interventions. Encouraging fluid intake is important to help flush out the contrast dye and prevent dehydration. Administering a laxative (Choice A) is unnecessary and not indicated after CT with contrast. Maintaining the client on strict bed rest (Choice C) is not necessary unless specified by the healthcare provider. Holding all medications for at least 2 hours (Choice D) is not a standard practice after CT with contrast.
5. During a routine clinic visit, a nurse is assessing a 48-year-old client with a history of smoking. The client, who exercises regularly, reports calf pain during exercise that disappears at rest. Which of the following findings requires further evaluation?
- A. Heart rate of 57 bpm.
- B. SpO2 of 94% on room air.
- C. Blood pressure of 134/82.
- D. Ankle-brachial index of 0.65.
Correct answer: D
Rationale: An Ankle-Brachial Index of 0.65 suggests moderate arterial vascular disease in a client experiencing intermittent claudication, indicating compromised blood flow to the lower extremities during exercise. This finding requires further evaluation to assess the severity of arterial insufficiency and determine appropriate interventions. Choice A (Heart rate of 57 bpm) is within the normal range for an adult at rest and indicates good cardiovascular fitness. Choice B (SpO2 of 94% on room air) is slightly lower than the normal range but is generally acceptable in a healthy individual. Choice C (Blood pressure of 134/82) falls within the normal range and does not raise immediate concerns in this context.
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