ATI LPN
LPN Pharmacology
1. The LPN/LVN is assisting in caring for a client in the telemetry unit who is receiving an intravenous infusion of 1000 mL of 5% dextrose with 40 mEq of potassium chloride. Which occurrence observed on the cardiac monitor indicates the presence of hyperkalemia?
- A. Tall, peaked T waves
- B. ST segment depressions
- C. Shortened P-R intervals
- D. Shortening of the QRS complex
Correct answer: A
Rationale: In hyperkalemia, tall, peaked T waves are a distinct ECG finding. These T waves can be seen as a result of increased serum potassium levels, affecting the repolarization phase of the cardiac action potential. It is crucial for healthcare providers to recognize this ECG change promptly as hyperkalemia can lead to serious cardiac arrhythmias and complications. ST segment depressions, shortened P-R intervals, and shortening of the QRS complex are not typically associated with hyperkalemia. ST segment depressions are more indicative of myocardial ischemia or infarction. Shortened P-R intervals may be seen in conditions like Wolff-Parkinson-White syndrome. Shortening of the QRS complex is associated with conditions affecting the conduction system of the heart, such as bundle branch blocks.
2. An ambulatory clinic nurse is interviewing a client who is complaining of flu-like symptoms. The client suddenly develops chest pain. Which question best assists the nurse in discriminating pain caused by a non-cardiac problem?
- A. Can you describe the pain to me?
- B. Have you ever experienced this pain before?
- C. Does the pain get worse when you breathe in?
- D. Can you rate the pain on a scale of 1 to 10, with 10 being the worst?
Correct answer: C
Rationale: The correct answer is C. Pain that worsens with breathing in can indicate pleuritic chest pain, which is non-cardiac in nature. This specific question helps in differentiating non-cardiac causes from cardiac causes of chest pain, as cardiac pain typically does not worsen with breathing. Choices A, B, and D are less specific in discriminating between cardiac and non-cardiac chest pain.
3. A client with peripheral artery disease (PAD) complains of pain in the legs while walking. Which instruction should the LPN/LVN reinforce to help alleviate the client's symptoms?
- A. Walk until the pain becomes severe, then rest.
- B. Perform leg exercises while sitting.
- C. Elevate the legs on pillows while resting.
- D. Take frequent breaks and walk shorter distances.
Correct answer: D
Rationale: The correct answer is to take frequent breaks and walk shorter distances. This instruction helps alleviate symptoms in clients with peripheral artery disease (PAD) by allowing them to manage pain and discomfort more effectively. Option A is incorrect as waiting for the pain to become severe before resting can exacerbate symptoms. Option B, performing leg exercises while sitting, may not directly address the issue of pain during walking. Option C, elevating the legs on pillows while resting, is beneficial for other conditions like edema but may not specifically help alleviate pain while walking in PAD clients.
4. A client has a new prescription for transdermal nitroglycerin patches. Which of the following instructions should be included for proper use?
- A. Apply the patch to the same site each day.
- B. Place the patch on an area of skin away from skin folds and joints.
- C. Keep the patch on 24 hours per day.
- D. Replace the patch every 72 hours.
Correct answer: B
Rationale: Placing the nitroglycerin patch on an area of skin away from skin folds and joints is crucial to ensure optimal absorption and effectiveness of the medication. Placing the patch on skin folds or joints can interfere with absorption, potentially reducing the patch's efficacy. Therefore, it is essential to follow this instruction to maximize the therapeutic benefits of the nitroglycerin patches. The other options are incorrect because applying the patch to the same site each day can lead to skin irritation, keeping the patch on 24 hours per day may not be necessary depending on the specific patch instructions, and replacing the patch every 72 hours is not the standard frequency for nitroglycerin patches.
5. A client has a new prescription for amitriptyline. Which of the following instructions should the nurse include?
- A. Take the medication in the morning.
- B. Avoid consuming grapefruit juice.
- C. Take the medication with a full glass of water.
- D. Monitor for signs of weight gain.
Correct answer: C
Rationale: When a client is prescribed amitriptyline, it is important to instruct them to take the medication with a full glass of water. This instruction helps prevent esophageal irritation, as amitriptyline can be harsh on the esophagus. Option C is the correct choice. Option A, taking the medication in the morning, is not specific to amitriptyline and can vary depending on the individual's condition. Option B, avoiding grapefruit juice, is a general precaution for many medications but not specifically related to amitriptyline. Option D, monitoring for signs of weight gain, is not a direct instruction for taking the medication itself and may not be a common side effect of amitriptyline.
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