ATI LPN
LPN Pharmacology Practice Test
1. A healthcare professional is reviewing laboratory results for a client who has been taking carbamazepine. Which of the following findings should the healthcare professional report to the provider?
- A. WBC count 3,000/mm3
- B. Platelet count 150,000/mm3
- C. Hemoglobin 14 g/dL
- D. Serum potassium 4.5 mEq/L
Correct answer: A
Rationale: A WBC count of 3,000/mm3 indicates leukopenia, a serious side effect of carbamazepine. Leukopenia can increase the risk of infections due to decreased white blood cell count, which is important to report to the provider for further evaluation and management. Platelet count within normal range (choice B), hemoglobin level within normal range (choice C), and serum potassium level within normal range (choice D) are not directly associated with carbamazepine use and do not require immediate reporting as they do not indicate a serious adverse effect.
2. A nurse is planning to administer an injection of morphine to a client. Which of the following actions should the nurse take to ensure client safety?
- A. Instruct the client to take a deep breath during administration.
- B. Administer the medication over 30 seconds.
- C. Verify the client’s pain level.
- D. Have naloxone available in case of respiratory depression.
Correct answer: D
Rationale: The correct answer is to have naloxone available in case of respiratory depression. Morphine is an opioid that can lead to respiratory depression, especially in higher doses. Naloxone is the antidote for opioid overdose and should be readily accessible when administering morphine to reverse respiratory depression if it occurs. Instructing the client to take a deep breath during administration (choice A) is not directly related to ensuring safety in this scenario. Administering the medication over 30 seconds (choice B) may help with the comfort of the client but does not address the potential risk of respiratory depression. Verifying the client's pain level (choice C) is important but not the primary action to ensure safety when administering morphine.
3. A nurse is teaching a client with newly diagnosed hypertension about lifestyle changes. Which of the following recommendations should the nurse make?
- A. Limit sodium intake to 3,000 mg per day.
- B. Exercise for at least 30 minutes most days of the week.
- C. Drink no more than two alcoholic drinks per day.
- D. Increase fluid intake to at least 3 liters per day.
Correct answer: B
Rationale: The correct answer is B: 'Exercise for at least 30 minutes most days of the week.' Regular exercise, especially aerobic activity, is known to help lower blood pressure and should be included in lifestyle changes for managing hypertension. Choice A is incorrect because the recommended sodium intake for individuals with hypertension is usually lower than 3,000 mg per day. Choice C is incorrect as it is advisable to limit alcohol intake to one drink per day for women and two drinks per day for men. Choice D is incorrect because increasing fluid intake to 3 liters per day may not be necessary and could be harmful in some cases, depending on the individual's health status.
4. A nurse is reviewing the laboratory values for a client who is receiving a continuous IV heparin infusion and has an aPTT of 90 seconds. Which of the following actions should the nurse prepare to take?
- A. Administer vitamin K
- B. Reduce the infusion rate
- C. Give the client a low-dose aspirin
- D. Request an INR
Correct answer: B
Rationale: An aPTT of 90 seconds is elevated, indicating a risk of bleeding due to excessive anticoagulation. The appropriate action is to reduce the infusion rate of heparin to prevent further complications. Administering vitamin K is not indicated for an elevated aPTT due to heparin therapy. Giving the client a low-dose aspirin can further increase the risk of bleeding when combined with heparin. Requesting an INR is not necessary for monitoring heparin therapy; aPTT is the more specific test for assessing heparin's therapeutic effect. Therefore, the correct action for the nurse to prepare to take is to reduce the infusion rate of heparin.
5. The client with a history of heart failure is taking furosemide (Lasix). Which laboratory result should the nurse monitor closely?
- A. Serum sodium.
- B. Serum potassium.
- C. Serum calcium.
- D. Serum magnesium.
Correct answer: B
Rationale: Furosemide (Lasix) is a loop diuretic that can lead to potassium loss, causing hypokalemia. Monitoring serum potassium levels is crucial to prevent complications such as cardiac dysrhythmias associated with low potassium levels.
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