ATI RN
ATI Pharmacology Proctored Exam 2024
1. How is lithium typically administered?
- A. Intravenously
- B. Intramuscularly
- C. Orally
- D. Sublingually
Correct answer: C
Rationale: Lithium is typically administered orally to ensure proper absorption and distribution in the body. By taking lithium orally, it allows the medication to be absorbed through the gastrointestinal tract and distributed effectively. Intravenous and intramuscular routes are not commonly used for lithium administration as they can lead to rapid, unpredictable absorption and increase the risk of toxicity. Sublingual administration is also not the typical route for lithium, as it is usually taken orally for consistent and controlled absorption.
2. While caring for a client receiving Heparin therapy, which of the following laboratory tests should the nurse monitor to evaluate the effectiveness of the therapy?
- A. PT
- B. INR
- C. aPTT
- D. Platelet count
Correct answer: C
Rationale: The nurse should monitor the aPTT (activated partial thromboplastin time) when caring for a client receiving Heparin therapy. The aPTT reflects the intrinsic pathway of the clotting cascade and is used to monitor the effectiveness of heparin, which primarily affects this pathway by potentiating antithrombin III. Monitoring the aPTT helps ensure that the client's blood is within the therapeutic range to prevent thrombus formation. Choices A, B, and D are incorrect. PT (Prothrombin Time) and INR (International Normalized Ratio) are used to monitor Warfarin therapy, not Heparin. Platelet count is important in assessing for thrombocytopenia but is not a specific indicator of Heparin therapy effectiveness.
3. When educating a client with a new prescription for Omeprazole to manage GERD, which of the following information should the nurse include?
- A. Take the medication before meals.
- B. You may need to take this medication for a long time.
- C. Increase your intake of vitamin C while taking this medication.
- D. Expect immediate relief of symptoms.
Correct answer: A
Rationale: The correct answer is to take the medication before meals. Omeprazole should be taken before meals to ensure its effectiveness in reducing stomach acid production. This timing allows the medication to work on reducing acid secretion when the stomach is most actively producing it, leading to better control of symptoms. Choice B is incorrect because not all patients with GERD need to take Omeprazole for the rest of their lives; the duration of treatment varies. Choice C is incorrect as there is no specific recommendation to increase vitamin C intake while taking Omeprazole. Choice D is incorrect because Omeprazole may take a few days to start providing symptom relief, so immediate relief should not be expected.
4. A healthcare professional reviewing a client's medical record notes a new prescription for verifying the trough level of the client's medication. Which of the following actions should the professional take?
- A. Obtain a blood specimen immediately prior to administering the next dose of medication.
- B. Verify that the client has been taking the medication for 24 hours before obtaining a blood specimen.
- C. Ask the client to provide a urine specimen after the next dose of medication.
- D. Administer the medication, and obtain a blood specimen 30 minutes later.
Correct answer: A
Rationale: To verify trough levels of a medication, the healthcare professional should obtain a blood specimen immediately before administering the next dose of medication. This timing ensures an accurate representation of the medication's lowest concentration in the bloodstream, which is crucial for therapeutic monitoring and dose adjustments. Choice B is incorrect because waiting 24 hours after taking the medication would not provide an accurate trough level. Choice C is incorrect as urine specimens are not used to measure trough levels. Choice D is incorrect because obtaining a blood specimen 30 minutes after administering the medication would not reflect the trough level, as it is the lowest concentration before the next dose.
5. When educating a client with a new prescription for Losartan, which instruction should the nurse provide?
- A. Avoid consuming grapefruit juice.
- B. Take this medication with a full glass of water.
- C. Take this medication with food.
- D. Monitor for signs of dehydration.
Correct answer: D
Rationale: The correct answer is to instruct the client to monitor for signs of dehydration when taking Losartan. Losartan can lead to dehydration, so it is crucial for the client to watch out for symptoms like dry mouth, increased thirst, and reduced urine output. Monitoring for these signs can help prevent complications associated with dehydration while taking this medication. Choices A, B, and C are incorrect because Losartan is not known to have interactions with grapefruit juice, does not require a specific amount of water for intake, and can be taken with or without food.
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