ATI RN
ATI Pharmacology
1. A client is receiving heparin therapy. Which laboratory value should be monitored by the nurse to evaluate the effectiveness of the therapy?
- A. PT
- B. aPTT
- C. INR
- D. Platelet count
Correct answer: B
Rationale: The activated partial thromboplastin time (aPTT) is specifically used to monitor the effectiveness of heparin therapy. It should be maintained at 1.5 to 2 times the normal level. Monitoring aPTT helps ensure that the therapeutic range of heparin is achieved to prevent clot formation while minimizing the risk of bleeding complications. Choice A (PT) is incorrect as it is used to monitor warfarin therapy, not heparin. Choice C (INR) is also incorrect as it is primarily used to monitor warfarin therapy. Choice D (Platelet count) is not directly related to monitoring the effectiveness of heparin therapy.
2. When a client is receiving treatment with methotrexate, which supplement should the nurse instruct the client to take?
- A. Folic acid
- B. Vitamin D
- C. Calcium
- D. Iron
Correct answer: A
Rationale: Folic acid supplementation is crucial for clients undergoing methotrexate treatment because methotrexate functions as a folic acid antagonist. By supplementing with folic acid, the risk of methotrexate toxicity can be minimized, improving the treatment's effectiveness and safety. Vitamin D, calcium, and iron are not specifically recommended in conjunction with methotrexate therapy and may not provide the same protective benefits as folic acid.
3. When instructing a client with a new prescription for Timolol on how to insert eye drops, which area should the nurse instruct the client to press on to prevent systemic absorption of the medication?
- A. Bony orbit
- B. Nasolacrimal duct
- C. Conjunctival sac
- D. Outer canthus
Correct answer: B
Rationale: Pressing on the nasolacrimal duct, located near the inner corner of the eye, blocks the lacrimal punctum and prevents the medication from entering the systemic circulation. This technique helps to ensure the medication stays localized in the eye, enhancing its therapeutic effect while minimizing systemic side effects. Choices A, C, and D are incorrect. The bony orbit is the eye socket and not a site to press for preventing systemic absorption. The conjunctival sac is where eye drops are instilled, not pressed on. The outer canthus is also not the correct area to press to prevent systemic absorption.
4. A client is taking Furosemide for heart failure. Which of the following findings is a priority to report to the provider?
- A. Weight loss of 1 kg in 24 hours
- B. Blood pressure of 104/60 mm Hg
- C. Potassium level of 3.5 mEq/L
- D. Urine output of 200 mL in 8 hours
Correct answer: D
Rationale: A urine output of 200 mL in 8 hours indicates decreased kidney function and potential worsening heart failure. This finding should be reported promptly to the provider for further evaluation and management to prevent complications. Weight loss, while significant, may be expected with diuretic use. A blood pressure of 104/60 mm Hg is within normal range and can be managed. A potassium level of 3.5 mEq/L is slightly low but not an immediate concern.
5. A client has a prescription for Furosemide. Which of the following instructions should the nurse include?
- A. Take the medication in the morning.
- B. Increase your intake of potassium-rich foods.
- C. Expect your urine to turn orange.
- D. Avoid prolonged sunlight exposure.
Correct answer: B
Rationale: The correct answer is B: 'Increase your intake of potassium-rich foods.' Furosemide is a loop diuretic that can lead to hypokalemia (low potassium levels) due to increased excretion of potassium in the urine. To counteract this effect and maintain electrolyte balance, the client should be advised to increase their intake of potassium-rich foods. This instruction helps prevent potential complications associated with low potassium levels. Choices A, C, and D are incorrect. Taking Furosemide in the morning does not affect its effectiveness; urine turning orange is not an expected side effect of Furosemide; and avoiding prolonged sunlight exposure is not directly related to Furosemide use.
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