ATI LPN
LPN Pharmacology Practice Test
1. When preparing to administer a controlled substance, which of the following actions is required?
- A. Check the client's identification bracelet.
- B. Check the client's allergy status.
- C. Have a second nurse witness disposal of the medication.
- D. Document the administration in the client's medical record.
Correct answer: C
Rationale: When administering controlled substances, it is crucial to have a second nurse witness the disposal of the medication. This measure ensures proper handling, reduces the risk of diversion, and promotes compliance with regulations regarding controlled substances. Having a second nurse witness the disposal is a safeguard to maintain accountability and prevent any potential misuse or errors during the disposal process. Checking the client's identification bracelet and allergy status are important steps in medication administration but are not specifically required for controlled substances. Documenting the administration in the client's medical record is essential but does not specifically relate to the disposal of controlled substances.
2. A client is receiving heparin therapy. Which of the following laboratory tests should be monitored to evaluate the effectiveness of the therapy?
- A. Prothrombin time (PT)
- B. International normalized ratio (INR)
- C. Activated partial thromboplastin time (aPTT)
- D. Complete blood count (CBC)
Correct answer: C
Rationale: Activated partial thromboplastin time (aPTT) is the most appropriate laboratory test to monitor the effectiveness of heparin therapy. Heparin works on the intrinsic pathway of the coagulation cascade, and monitoring aPTT helps assess its anticoagulant effect. Therapeutic levels of aPTT for clients on heparin therapy are typically 1.5 to 2.5 times the control value. Prothrombin time (PT) and International normalized ratio (INR) are used to monitor warfarin therapy, which acts on the extrinsic pathway of the coagulation cascade. Complete blood count (CBC) is not specific for monitoring the effectiveness of heparin therapy.
3. A client with a history of coronary artery disease is prescribed atorvastatin (Lipitor). What side effect should the nurse instruct the client to immediately report?
- A. Muscle pain or tenderness
- B. Constipation
- C. Dry mouth
- D. Drowsiness
Correct answer: A
Rationale: The correct answer is 'Muscle pain or tenderness.' This can be a sign of rhabdomyolysis, a serious side effect of statins like atorvastatin (Lipitor). Rhabdomyolysis is a condition in which muscle breakdown releases a protein that can damage the kidneys. Therefore, it is crucial for the client to report any muscle pain or tenderness immediately to prevent further complications. Choices B, C, and D are incorrect because they are not typically associated with atorvastatin (Lipitor) use or indicative of a serious adverse effect that requires immediate reporting.
4. The client has been prescribed atorvastatin (Lipitor) for hyperlipidemia. Which instruction should the nurse provide to the client?
- A. Take the medication in the morning with breakfast.
- B. Avoid drinking grapefruit juice while taking this medication.
- C. Increase your intake of dietary fiber while on this medication.
- D. Avoid eating foods high in potassium.
Correct answer: B
Rationale: The correct instruction for the nurse to provide to the client prescribed atorvastatin (Lipitor) for hyperlipidemia is to avoid drinking grapefruit juice while taking this medication. Grapefruit juice can interfere with the metabolism of atorvastatin, leading to an increased risk of side effects. It is crucial for the client to adhere to this instruction to ensure the effectiveness and safety of the treatment. Choices A, C, and D are incorrect because taking the medication with breakfast, increasing dietary fiber intake, and avoiding foods high in potassium are not specific instructions related to atorvastatin therapy for hyperlipidemia.
5. The nurse is preparing to administer a scheduled dose of enalapril (Vasotec) to a client with hypertension. Before administering the medication, the nurse should check which priority assessment?
- A. Heart rate
- B. Blood pressure
- C. Respiratory rate
- D. Temperature
Correct answer: B
Rationale: Before administering enalapril, an antihypertensive medication, the nurse should prioritize checking the client's blood pressure. Monitoring blood pressure helps ensure it is at an acceptable level before giving the medication, as enalapril can further lower blood pressure. This assessment is crucial in preventing potential hypotensive episodes and adverse effects associated with excessive blood pressure reduction. Heart rate, respiratory rate, and temperature are important assessments but are not the priority before administering enalapril, which primarily affects blood pressure levels.
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