ATI LPN
LPN Pharmacology
1. A healthcare provider is assisting in the care of a client who is having central venous pressure (CVP) measurements taken. The healthcare provider should assist by placing the bed in which position for the reading?
- A. Flat
- B. Semi-Fowler's
- C. Trendelenburg
- D. Reverse Trendelenburg
Correct answer: A
Rationale: Central venous pressure (CVP) measurements are most accurate when the client is lying flat, as this allows for a consistent baseline. Placing the bed flat ensures that the hydrostatic pressure within the vena cava is not affected by the client's position, providing a more precise reading. Choice B (Semi-Fowler's) elevates the head of the bed at a 30-45 degree angle, which could affect the accuracy of CVP readings. Choices C (Trendelenburg) and D (Reverse Trendelenburg) involve extreme positions that would not be suitable for obtaining accurate CVP measurements.
2. When teaching a client with a new prescription for spironolactone, which instruction should the nurse include?
- A. Increase your intake of potassium-rich foods.
- B. Avoid consuming grapefruit juice.
- C. Take the medication with food.
- D. Monitor for signs of hyperkalemia.
Correct answer: D
Rationale: The correct answer is to instruct the client to monitor for signs of hyperkalemia when taking spironolactone since it is a potassium-sparing diuretic. Hyperkalemia is a potential adverse effect due to the medication's mechanism of action. Advising the client to increase potassium-rich foods (Choice A) would be incorrect as it can further elevate potassium levels, which could lead to hyperkalemia. Avoiding grapefruit juice (Choice B) is not directly related to spironolactone use. Though taking the medication with food (Choice C) can help reduce gastrointestinal upset, it is not the most critical instruction when initiating spironolactone therapy.
3. A client with myocardial infarction (MI) has been transferred from the coronary care unit (CCU) to the general medical unit with cardiac monitoring via telemetry. The nurse assisting in caring for the client expects to note which type of activity prescribed?
- A. Strict bed rest for 24 hours
- B. Bathroom privileges and self-care activities
- C. Unrestricted activities because the client is monitored
- D. Unsupervised hallway ambulation with distances less than 200 feet
Correct answer: B
Rationale: After being transferred from the CCU to the general medical unit with cardiac monitoring, the client with MI is typically prescribed bathroom privileges and self-care activities. This approach allows for gradual recovery and mobility while still being closely monitored, promoting the client's overall well-being and independence. Choice A, strict bed rest for 24 hours, is too restrictive and not recommended for MI patients as it can lead to complications like deep vein thrombosis. Choice C, unrestricted activities, is also not appropriate as MI patients usually require monitoring and gradual re-introduction to activities. Choice D, unsupervised hallway ambulation with distances less than 200 feet, may be too strenuous for a client who just got transferred from the CCU and needs a more gradual approach to activity.
4. A client has a new prescription for heparin. Which of the following laboratory results should be monitored to evaluate the effectiveness of the medication?
- A. Prothrombin time (PT)
- B. International normalized ratio (INR)
- C. Activated partial thromboplastin time (aPTT)
- D. Platelet count
Correct answer: C
Rationale: Activated partial thromboplastin time (aPTT) is the laboratory result that should be monitored to evaluate the effectiveness of heparin. Heparin works by prolonging the aPTT, and monitoring this parameter helps ensure the medication's effectiveness and safety in preventing clot formation. Prothrombin time (PT) and International normalized ratio (INR) are used to monitor the effectiveness of warfarin, another anticoagulant. Platelet count is essential to assess platelet function and clotting disorders, but it is not specifically used to monitor heparin therapy.
5. The nurse is preparing to administer an intravenous dose of furosemide (Lasix) to a client with heart failure. The nurse should monitor for which potential side effect?
- A. Hypertension
- B. Hyperkalemia
- C. Hypokalemia
- D. Hypoglycemia
Correct answer: C
Rationale: Furosemide is a loop diuretic that works by promoting the excretion of water and electrolytes, including potassium. This loss of potassium can lead to hypokalemia, which can be a potential side effect of furosemide administration. Hypokalemia can result in cardiac dysrhythmias and other complications, especially in clients with heart failure who may already have compromised cardiac function. Therefore, monitoring for signs of hypokalemia, such as muscle weakness, cardiac irregularities, and fatigue, is essential when administering furosemide. Choice A, hypertension, is incorrect because furosemide is actually used to treat hypertension by reducing excess fluid in the body. Choice B, hyperkalemia, is incorrect as furosemide causes potassium loss, leading to hypokalemia. Choice D, hypoglycemia, is unrelated to the mechanism of action of furosemide and is not a common side effect associated with its administration.
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