ATI LPN
LPN Pharmacology Assessment A
1. A client with atrial fibrillation is receiving warfarin (Coumadin). The nurse should monitor which laboratory test to determine the effectiveness of the therapy?
- A. Prothrombin time (PT) and international normalized ratio (INR)
- B. Activated partial thromboplastin time (aPTT)
- C. Complete blood count (CBC)
- D. Fibrinogen level
Correct answer: A
Rationale: To monitor the effectiveness of warfarin therapy in a client with atrial fibrillation, the nurse should assess the Prothrombin time (PT) and international normalized ratio (INR) levels. These tests help determine the clotting ability of the blood and ensure that the client's anticoagulation levels are within the therapeutic range, reducing the risk of bleeding or clotting complications. Activated partial thromboplastin time (aPTT) (Choice B) is more commonly used to monitor heparin therapy. Complete blood count (CBC) (Choice C) provides information about the cellular components of blood but does not directly assess the effectiveness of warfarin therapy. Fibrinogen level (Choice D) is not typically used to monitor warfarin therapy; it reflects the level of fibrinogen in the blood, which is involved in the clotting process.
2. A nurse is caring for a client in the second trimester of pregnancy and asks how to treat constipation. Which of the following statements by the nurse is appropriate?
- A. Decrease intake of vitamins and supplements to every other day
- B. Eat 15 g of fiber per day
- C. Consume 48 ounces of water each day
- D. Drink hot water with lemon juice each morning
Correct answer: D
Rationale: The correct answer is D. Drinking hot water with lemon juice in the morning is a natural and safe way to stimulate bowel movements and relieve constipation during pregnancy. Option A is incorrect as vitamins and supplements should not be decreased without consulting a healthcare provider, especially during pregnancy. Option B is inadequate as the recommended daily fiber intake during pregnancy is higher than 15g. Option C, while important for overall health, does not directly address constipation relief in pregnancy.
3. A client with chronic kidney disease (CKD) has an arteriovenous (AV) fistula for hemodialysis. Which finding should the nurse report to the healthcare provider immediately?
- A. No bruit or thrill over the AV fistula.
- B. Redness at the site of the AV fistula.
- C. Client's complaint of pain at the AV fistula site.
- D. Swelling of the hand on the side of the AV fistula.
Correct answer: A
Rationale: In a client with a chronic kidney disease who has an arteriovenous (AV) fistula for hemodialysis, the absence of a bruit (a humming sound) or thrill (vibratory sensation) over the AV fistula indicates a potential occlusion. This finding suggests inadequate blood flow through the AV fistula, which is a critical issue requiring immediate intervention to prevent complications such as thrombosis or clot formation. Reporting this absence of bruit or thrill promptly to the healthcare provider is essential to ensure timely assessment and management to maintain vascular access for hemodialysis.
4. Which lipoprotein increases the risk of cardiovascular disease?
- A. Low-density lipoprotein (LDL)
- B. High-density lipoprotein (HDL)
- C. Very low-density lipoprotein (VLDL)
- D. Chylomicrons
Correct answer: A
Rationale: The correct answer is A: Low-density lipoprotein (LDL). LDL is often referred to as 'bad cholesterol' because it can lead to plaque buildup in arteries, increasing the risk of cardiovascular disease. High-density lipoprotein (HDL) is considered 'good cholesterol' as it helps remove LDL from the arteries, reducing the risk of cardiovascular issues. Very low-density lipoprotein (VLDL) and chylomicrons are also lipoproteins that transport fats in the bloodstream, but they are not as strongly associated with an increased risk of cardiovascular disease as LDL.
5. What is the proper technique for obtaining a blood specimen from a central venous line?
- A. Use sterile gloves and discard the first 10 mL of blood
- B. Flush the line with heparin and then draw the specimen
- C. Draw the specimen and then administer heparin
- D. Use non-sterile gloves to reduce contamination risk
Correct answer: A
Rationale: The correct technique for obtaining a blood specimen from a central venous line is to use sterile gloves and discard the first 10 mL of blood. This practice helps ensure that the blood sample collected is not contaminated. Choice B is incorrect because flushing the line with heparin before drawing the specimen can contaminate the sample. Choice C is incorrect as administering heparin before drawing the specimen can affect the accuracy of the blood sample. Choice D is incorrect as using non-sterile gloves increases the risk of contamination, which is not recommended when obtaining a blood specimen from a central venous line.
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