ATI LPN
LPN Pharmacology Practice Test
1. 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.
2. A client with a history of angina pectoris complains of substernal chest pain. The nurse checks the client's blood pressure and administers nitroglycerin 0.4 mg sublingually. Five minutes later, the client is still experiencing chest pain. If the blood pressure is still stable, what should the nurse do next?
- A. Administer another nitroglycerin tablet.
- B. Apply 1 to 3 L/minute of oxygen via nasal cannula.
- C. Call for a 12-lead electrocardiogram (ECG) to be performed.
- D. Wait an additional 5 minutes, then give a second nitroglycerin tablet.
Correct answer: A
Rationale: When a client with angina pectoris continues to experience chest pain despite initial nitroglycerin administration and stable blood pressure, the appropriate next step is to administer another nitroglycerin tablet. This helps to further dilate coronary arteries, improving blood flow to the heart muscle and relieving chest pain. Applying oxygen via nasal cannula (Choice B) may be necessary if the client displays signs of respiratory distress or hypoxemia, but in this case, the priority is addressing the unresolved chest pain. Calling for a 12-lead electrocardiogram (ECG) (Choice C) is important to assess for any changes in the client's cardiac status, but administering another nitroglycerin tablet takes precedence in managing the ongoing chest pain. Waiting an additional 5 minutes before giving a second nitroglycerin tablet (Choice D) may delay symptom relief and potentially worsen the client's condition if the chest pain persists.
3. The client with a history of angina pectoris is being discharged after coronary artery bypass graft (CABG) surgery. Which statement by the client indicates a need for further teaching?
- A. I will avoid lifting heavy objects for at least 6 weeks.
- B. I will call the doctor if I develop a fever or drainage from my incisions.
- C. I will take my pain medication before doing any activities that might cause discomfort.
- D. I can resume my normal activities, including driving, as soon as I feel like it.
Correct answer: D
Rationale: The correct answer is D because after CABG surgery, patients need to follow specific guidelines for resuming activities, and driving is typically restricted for a certain period to ensure safety and proper recovery. Resuming normal activities too soon, including driving, can pose risks to the client's health and safety. It is essential to emphasize to the client the importance of following the healthcare provider's recommendations regarding activity restrictions post-surgery to prevent complications and promote optimal recovery. Choices A, B, and C are correct statements that align with post-CABG discharge instructions, emphasizing the importance of avoiding heavy lifting, monitoring for signs of infection, and managing pain effectively.
4. In monitoring the effectiveness of warfarin therapy for a client with a history of atrial fibrillation, which laboratory value should the nurse monitor?
- A. Activated partial thromboplastin time (aPTT)
- B. Prothrombin time (PT) and international normalized ratio (INR)
- C. Platelet count
- D. Erythrocyte sedimentation rate (ESR)
Correct answer: B
Rationale: Prothrombin time (PT) and international normalized ratio (INR) are crucial laboratory values to monitor the effectiveness of warfarin therapy in clients with atrial fibrillation. These values help ensure that the client is within the therapeutic range and that the anticoagulant effect of warfarin is appropriate. Monitoring aPTT, platelet count, or ESR is not directly related to assessing the effectiveness of warfarin therapy in these cases.
5. A client has a new prescription for lisinopril. Which of the following findings should be reported to the provider by the nurse?
- A. Weight gain
- B. Dry cough
- C. Hypokalemia
- D. Increased appetite
Correct answer: B
Rationale: The correct answer is B - Dry cough. Lisinopril is known to cause a persistent dry cough as a common side effect. This adverse reaction can be bothersome to the client and may necessitate discontinuation of the medication. Weight gain, hypokalemia, and increased appetite are not typically associated with lisinopril and would not be as concerning as a dry cough when assessing for adverse effects.
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