ATI RN
ATI Pharmacology Test Bank
1. A client with deep vein thrombosis has been on heparin continuous infusion for 5 days. The provider prescribes warfarin PO without discontinuing the heparin. The client asks the nurse why both anticoagulants are necessary. Which of the following statements should the nurse make?
- A. Warfarin takes several days to work, so the IV heparin will be used until the warfarin reaches a therapeutic level.
- B. I will call the provider to get a prescription for discontinuing the IV heparin today.
- C. Both heparin and warfarin work together to dissolve the clots.
- D. The IV heparin increases the effects of the warfarin and decreases the length of your hospital stay.
Correct answer: A
Rationale: The correct answer is A because warfarin takes several days to reach a therapeutic level and exert its full anticoagulant effect. During this time, the IV heparin is continued to prevent clotting until the warfarin is effective. Both medications are used together temporarily for this reason. Discontinuing heparin prematurely can increase the risk of clot formation. Therefore, the nurse should explain to the client that the IV heparin will be continued until the warfarin reaches a therapeutic level.
2. A client is prescribed Spironolactone. Which of the following laboratory findings should the nurse monitor and report to the provider?
- A. Sodium level of 138 mEq/L
- B. Potassium level of 5.2 mEq/L
- C. Chloride level of 100 mEq/L
- D. Calcium level of 9.5 mg/dL
Correct answer: B
Rationale: Spironolactone is a potassium-sparing diuretic, causing potassium retention, potentially leading to elevated potassium levels. A potassium level of 5.2 mEq/L is above the normal range (3.5-5.0 mEq/L), indicating hyperkalemia, a serious condition. Elevated potassium levels can lead to life-threatening cardiac arrhythmias. Monitoring and reporting high potassium levels promptly to the healthcare provider are crucial to prevent potential complications. Sodium, chloride, and calcium levels are not directly influenced by Spironolactone, making choices A, C, and D incorrect.
3. Which of the following types of insulin is classified as 'long-acting'?
- A. Lispro (Humalog)
- B. NPH (Humulin N)
- C. Regular insulin (Humulin R)
- D. Glargine (Lantus)
Correct answer: D
Rationale: The correct answer is Glargine (Lantus). Glargine is classified as a long-acting insulin due to its slow, steady release over an extended period, making it suitable for basal insulin requirements. It has a duration of action that can last up to 24 hours, helping to maintain stable blood sugar levels throughout the day. Lispro (Humalog) is a rapid-acting insulin, NPH (Humulin N) is an intermediate-acting insulin, and Regular insulin (Humulin R) is a short-acting insulin, so they are not classified as long-acting insulins.
4. What instruction should the healthcare provider include to minimize an adverse effect of Clomipramine for OCD in an adolescent client?
- A. Wear sunglasses when outdoors.
- B. Check your temperature daily.
- C. Take this medication in the morning.
- D. Add extra calories to your diet.
Correct answer: A
Rationale: The correct answer is A: 'Wear sunglasses when outdoors.' To minimize the anticholinergic effect of Clomipramine, the client should wear sunglasses when outdoors to reduce photophobia. This adverse effect is common with tricyclic antidepressant (TCA) use. Choices B, C, and D are incorrect. Checking temperature daily, timing of medication intake, or adding extra calories to the diet are not directly related to minimizing adverse effects of Clomipramine.
5. A client with a UTI and a history of recurrent infections asks why the provider has not yet prescribed an antibiotic. The nurse should explain that the provider has to wait for the results of which of the following laboratory tests to identify which antibiotic to prescribe?
- A. Gram stain
- B. Culture
- C. Sensitivity
- D. Specific gravity
Correct answer: C
Rationale: In the case of a UTI, a sensitivity test is crucial as it identifies the most effective antibiotic to target the specific microorganism causing the infection. This test helps in prescribing the appropriate antibiotic for successful treatment and preventing antibiotic resistance. While a Gram stain and culture are important in diagnosing a UTI, the sensitivity test specifically determines the most suitable antibiotic. Specific gravity, on the other hand, is not related to identifying the appropriate antibiotic for a UTI.
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