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ATI Pharmacology Test Bank
1. A healthcare professional is reviewing laboratory results for a client who is receiving heparin via continuous IV infusion. Which of the following results indicates that the heparin infusion should be increased?
- A. aPTT of 90 seconds
- B. Platelet count of 150,000/mm³
- C. INR of 1.0
- D. Hgb of 15 g/dL
Correct answer: A
Rationale: An aPTT of 90 seconds is above the therapeutic range for heparin, which typically falls between 60-80 seconds. This indicates that the current heparin dose is too high, and the infusion rate should be decreased to avoid excessive anticoagulation and the risk of bleeding. Monitoring aPTT is crucial in adjusting heparin therapy to maintain it within the therapeutic range.
2. When teaching a patient to take their own pulse, which medication should the nurse instruct them to monitor? (Hint: if pulse is <60 or >100, the patient should contact their healthcare provider before taking the medication)
- A. Digoxin
- B. Lithium
- C. Montelukast
- D. Phenytoin
Correct answer: A
Rationale: It is essential for patients taking Digoxin to monitor their pulse regularly. If their pulse falls below 60 or exceeds 100 beats per minute, they should contact their healthcare provider immediately. This is crucial due to Digoxin's potential to affect heart rate, making pulse monitoring a vital aspect of patient care while on this medication.
3. A client is prescribed Ranitidine. Which of the following laboratory results should be monitored by the nurse?
- A. Complete blood count (CBC).
- B. Serum creatinine.
- C. Serum potassium.
- D. Serum glucose.
Correct answer: A
Rationale: Ranitidine can potentially lead to blood dyscrasias, necessitating the monitoring of the client's CBC. Checking the CBC can help detect any abnormalities in blood cell counts and assess the client's overall hematologic status during Ranitidine therapy.
4. What is one of the therapeutic uses of Valproate?
- A. Suppression of seizure activity
- B. Replacement of hypothyroidism to restore normal hormone balance
- C. Maintenance of blood glucose
- D. Lowering of blood pressure
Correct answer: A
Rationale: Valproate, also known as Valproic acid, is commonly used in medicine for the suppression of seizure activity. It is an anticonvulsant medication that helps manage and prevent seizures in various conditions such as epilepsy. While it is not used for replacing hypothyroidism, maintaining blood glucose levels, or lowering blood pressure, its primary therapeutic use is in managing seizures.
5. A client has a new prescription for Valproic Acid. The client should be informed that which of the following laboratory tests need to be completed periodically? (Select all that apply.)
- A. Thrombocyte count.
- B. Hematocrit.
- C. Amylase.
- D. Liver function tests.
Correct answer: A
Rationale: Valproic acid can lead to thrombocytopenia, making it essential to monitor the client's thrombocyte count periodically. Additionally, valproic acid can cause pancreatitis, necessitating the monitoring of amylase levels. Furthermore, valproic acid carries a risk of hepatotoxicity, requiring regular monitoring of liver function tests.
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