ATI LPN
LPN Pharmacology Practice Test
1. A healthcare professional is assessing a client who has been taking lithium carbonate for bipolar disorder. Which of the following findings should the professional report to the provider?
- A. Increased urination
- B. Tremors
- C. Weight gain
- D. Blurred vision
Correct answer: B
Rationale: Tremors are a concerning sign of lithium toxicity that indicate a potential overdose. Tremors can progress to more severe symptoms if not addressed promptly. Reporting tremors promptly allows the provider to assess the client's lithium levels, adjust the dosage, or provide appropriate interventions to prevent further complications. Increased urination, weight gain, and blurred vision are potential side effects of lithium but are not indicative of toxicity or overdose. While they should still be monitored, they are not as urgent as tremors in the context of lithium therapy.
2. A client with chronic obstructive pulmonary disease (COPD) is prescribed theophylline. Which adverse effect should the nurse monitor for that indicates toxicity?
- A. Tachycardia
- B. Constipation
- C. Drowsiness
- D. Tremors
Correct answer: A
Rationale: The correct answer is A: Tachycardia. Tachycardia is a common sign of theophylline toxicity. The nurse should monitor the client for an increased heart rate, as it can indicate a dangerous level of theophylline in the body. Prompt medical attention is required if tachycardia is observed to prevent further complications. Choices B, C, and D are incorrect because constipation, drowsiness, and tremors are not typically associated with theophylline toxicity. While theophylline can cause gastrointestinal upset or central nervous system effects, tachycardia is a more specific and serious indicator of toxicity that requires immediate attention.
3. The client will wear a Holter monitor for continuous cardiac monitoring over the next 24 hours. What action should the nurse take to assist the client?
- A. Shave the front of the client's chest
- B. Give the client a device holder to wear around the waist
- C. Teach the client to rest as much as possible during the next 24 hours
- D. Tell the client to cover the monitor in plastic wrap before taking a bath
Correct answer: B
Rationale: Providing the client with a device holder to wear around the waist allows them to comfortably carry the Holter monitor while engaging in normal activities throughout the 24-hour monitoring period. This approach supports the client's mobility and ensures the monitor is securely in place for accurate readings. Shaving the front of the client's chest is unnecessary and not a standard practice for Holter monitor placement. Instructing the client to rest as much as possible does not promote normal daily activities which are important for accurate monitoring. Covering the monitor in plastic wrap before bathing is not recommended as it may affect the functionality of the device.
4. The LPN/LVN is assisting in the care of a client with a diagnosis of heart failure who is receiving digoxin (Lanoxin). Which laboratory result should the nurse monitor closely?
- A. Serum sodium
- B. Serum potassium
- C. Serum calcium
- D. Serum glucose
Correct answer: B
Rationale: The correct answer is serum potassium. Monitoring serum potassium levels is crucial when a client is receiving digoxin (Lanoxin) because low potassium levels can increase the risk of digoxin toxicity. Digoxin and low potassium levels can lead to serious cardiac complications, such as arrhythmias. Therefore, close monitoring of serum potassium is essential to prevent adverse effects and ensure the safe administration of digoxin in clients with heart failure. Serum sodium, serum calcium, and serum glucose levels are also important laboratory values to monitor in clients with heart failure, but they are not directly associated with the risk of digoxin toxicity. Monitoring these values helps in assessing overall health status, fluid balance, and metabolic functions in the client.
5. A client is prescribed clopidogrel. What laboratory result should be monitored by the nurse?
- A. White blood cell count
- B. Creatinine
- C. Blood glucose
- D. Platelet count
Correct answer: D
Rationale: When a client is prescribed clopidogrel, monitoring the platelet count is essential. Clopidogrel is an antiplatelet medication that works by preventing blood clots. Monitoring the platelet count is crucial in assessing the risk of thrombocytopenia, a potential side effect of clopidogrel. Monitoring white blood cell count, creatinine, or blood glucose is not directly related to the action or side effects of clopidogrel, making choices A, B, and C incorrect.
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