ATI LPN
LPN Pharmacology Assessment A
1. The client has angina pectoris and is prescribed nitroglycerin patches. What instruction should the nurse provide to the client?
- A. Apply the patch to the chest and leave it in place for 24 hours
- B. Apply the patch to a different site each time to prevent skin irritation
- C. Remove the patch before going to bed to prevent tolerance
- D. Cut the patch in half if experiencing headaches
Correct answer: B
Rationale: The correct instruction for the nurse to provide to the client is to apply the nitroglycerin patch to a different site each time to prevent skin irritation. Rotating the application site is crucial to prevent skin irritation and ensure consistent absorption of the medication. Applying the patch to the same site can lead to skin irritation and decreased effectiveness. Removing the patch before going to bed is not necessary, as the patch can typically be worn for a specific duration. Cutting the patch in half if experiencing headaches is not recommended and can alter the dose of the medication.
2. The healthcare provider notes this rhythm on the client's cardiac monitor. The healthcare provider next reports that the client is experiencing which heart rhythm?
- A. Normal sinus
- B. Atrial fibrillation
- C. Sinus bradycardia
- D. Ventricular fibrillation
Correct answer: B
Rationale: The correct answer is B, Atrial fibrillation. Atrial fibrillation is characterized by an irregular and often rapid heart rate, which can lead to poor blood flow due to ineffective contractions of the atria. Sinus bradycardia (Choice C) is a regular but slow heart rhythm originating from the sinus node. Normal sinus rhythm (Choice A) refers to a regular heartbeat originating from the sinus node. Ventricular fibrillation (Choice D) is a life-threatening arrhythmia characterized by rapid, uncoordinated contractions of the ventricles.
3. 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.
4. The client with a diagnosis of heart failure is receiving furosemide (Lasix). Which laboratory value is most important for the nurse to monitor?
- A. Blood glucose
- B. Serum sodium
- C. Serum potassium
- D. Blood urea nitrogen (BUN)
Correct answer: C
Rationale: The correct answer is C: Serum potassium. When a client is receiving furosemide, a loop diuretic, it can lead to potassium loss. Monitoring the serum potassium levels is crucial to prevent life-threatening complications such as cardiac arrhythmias. Blood glucose (Choice A) is not directly impacted by furosemide. Serum sodium (Choice B) may be affected, but monitoring potassium is more critical due to the risk of arrhythmias. Blood urea nitrogen (BUN) (Choice D) is important for assessing kidney function but is not the most crucial value to monitor in a client taking furosemide.
5. A client diagnosed with coronary artery disease (CAD) reports chest pain radiating to the left arm. 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. What is the next appropriate nursing action?
- A. Administer another dose of nitroglycerin.
- B. Notify the healthcare provider immediately.
- C. Have the client lie down and stay calm.
- D. Give the client aspirin 325 mg to chew.
Correct answer: A
Rationale: If chest pain persists after the first dose of nitroglycerin, it is appropriate to administer a second dose while continuing to monitor the client's response. Nitroglycerin helps dilate blood vessels and improve blood flow to the heart, relieving chest pain associated with coronary artery disease. Reassessing the client's response to a second dose is crucial before considering other interventions like contacting the healthcare provider or providing additional medications. Administering another dose of nitroglycerin aligns with the standard protocol for managing ongoing chest pain in clients with CAD.
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