ATI LPN
LPN Pharmacology Assessment A
1. The client with a history of coronary artery disease (CAD) is scheduled for a stress test. What instruction should the nurse provide to the client before the test?
- A. Continue taking your usual dose of beta-blockers
- B. Refrain from eating or drinking anything for 4 hours before the test
- C. Wear loose, comfortable clothing and walking shoes
- D. Avoid any physical activity for 24 hours before the test
Correct answer: C
Rationale: Before a stress test, the nurse should instruct the client to wear loose, comfortable clothing and walking shoes. This is essential as the stress test involves physical exercise, and the client should be ready for the activity involved. Continuing beta-blockers should be based on healthcare provider's instructions; adjustments may be needed. Fasting before the test is usually not necessary. Avoiding physical activity for 24 hours before the test is not recommended as it may affect the accuracy of the test results by not providing a true reflection of the client's exercise capacity.
2. The nurse is assisting with the care of a client who is on a continuous heparin infusion for deep vein thrombosis (DVT). Which laboratory test should the nurse monitor to evaluate the effectiveness of the therapy?
- A. Prothrombin time (PT)
- B. Activated partial thromboplastin time (aPTT)
- C. International normalized ratio (INR)
- D. Platelet count
Correct answer: B
Rationale: To evaluate the effectiveness of heparin therapy in a client with DVT, the nurse should monitor the activated partial thromboplastin time (aPTT). The aPTT test helps ensure that the dose of heparin is within the therapeutic range, which is essential for preventing clot formation or excessive bleeding. Monitoring aPTT is crucial in managing patients on heparin therapy to maintain the delicate balance between preventing thrombosis and avoiding hemorrhage. Prothrombin time (PT) and International normalized ratio (INR) are more indicative of warfarin therapy effectiveness, not heparin. Platelet count assesses platelet levels and function, not the effectiveness of heparin therapy for DVT.
3. A client is prescribed clopidogrel. What laboratory result should be monitored by the nurse?
- A. White blood cell count
- B. Creatinine
- C. Blood glucose
- D. Platelet count
Correct answer: D
Rationale: When a client is prescribed clopidogrel, monitoring the platelet count is essential. Clopidogrel is an antiplatelet medication that works by preventing blood clots. Monitoring the platelet count is crucial in assessing the risk of thrombocytopenia, a potential side effect of clopidogrel. Monitoring white blood cell count, creatinine, or blood glucose is not directly related to the action or side effects of clopidogrel, making choices A, B, and C incorrect.
4. The client is scheduled to undergo a treadmill stress test. Which instruction should the client be reinforced with?
- A. Eat a light meal before the test.
- B. Wear comfortable shoes and clothing.
- C. Avoid all physical activity the morning of the test.
- D. Take prescribed medications right before the test.
Correct answer: B
Rationale: The correct answer is B: 'Wear comfortable shoes and clothing.' Wearing comfortable shoes and clothing is crucial for the client undergoing a treadmill stress test to ensure they can complete the test without discomfort. The right attire will help the client move freely and reduce the risk of any hindrance during the test, which requires physical activity. Choices A, C, and D are incorrect. A light meal before the test may be recommended, but it's not as crucial as wearing suitable attire. Avoiding physical activity the morning of the test is not necessary as the test requires physical activity. Taking prescribed medications right before the test instructions should be followed as per the healthcare provider's advice and not as a general rule for all clients undergoing the test.
5. The nurse is caring for a client with hypertension who is prescribed a thiazide diuretic. The nurse should check which parameter before administering the medication?
- A. Serum potassium level
- B. Blood pressure
- C. Heart rate
- D. Serum sodium level
Correct answer: B
Rationale: Before administering a thiazide diuretic to a client with hypertension, the nurse should check the blood pressure. Thiazide diuretics are prescribed to lower blood pressure, so assessing the client's blood pressure prior to administration helps to monitor the effectiveness of the medication and to ensure the client's safety. Checking the serum potassium level (Choice A), heart rate (Choice C), or serum sodium level (Choice D) are also important parameters in the care of a client on a thiazide diuretic, but the priority assessment before administering the medication is the blood pressure to evaluate the drug's effectiveness in managing hypertension.
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