ATI RN
ATI Pharmacology
1. A client is receiving heparin therapy. Which of the following laboratory values should the nurse monitor to evaluate the effectiveness of the therapy?
- A. PT
- B. aPTT
- C. INR
- D. Platelet count
Correct answer: B
Rationale: The corrected answer is B: aPTT. The activated partial thromboplastin time (aPTT) is the laboratory value used to monitor the effectiveness of heparin therapy. The aPTT should be maintained at 1.5 to 2 times the normal level to ensure therapeutic anticoagulation. Monitoring aPTT helps healthcare providers adjust heparin doses to achieve the desired anticoagulant effects and prevent complications such as bleeding or clotting. Choice A, PT (prothrombin time), is used to monitor warfarin therapy, not heparin. Choice C, INR (international normalized ratio), is also used to monitor warfarin therapy. Choice D, platelet count, is important for assessing the risk of bleeding, but it does not directly monitor the effectiveness of heparin therapy.
2. A healthcare professional is preparing to administer dextrose 5% in water (D5W) 750 mL IV to infuse over 6 hr. How many mL/hr should the IV pump be set to deliver?
- A. 125 mL/hr
- B. 100 mL/hr
- C. 150 mL/hr
- D. 200 mL/hr
Correct answer: A
Rationale: To calculate the flow rate, divide the total volume by the total time: 750 mL / 6 hr = 125 mL/hr. Therefore, the IV pump should be set to deliver 125 mL/hr to infuse D5W 750 mL over 6 hours. Choice B (100 mL/hr) is incorrect because it does not accurately divide the total volume by the total time. Choice C (150 mL/hr) and Choice D (200 mL/hr) are incorrect as they are not the correct flow rates needed to infuse the D5W solution over the specified time period.
3. During an admission assessment for a client with severe Aspirin toxicity, which finding should the nurse expect?
- A. Body temperature 35°C (95°F)
- B. Lung crackles
- C. Cool, dry skin
- D. Respiratory depression
Correct answer: D
Rationale: In severe Aspirin toxicity, respiratory depression is an anticipated finding due to the development of respiratory acidosis. Aspirin toxicity can lead to metabolic acidosis, causing the individual to hyperventilate initially to compensate. However, as the condition progresses, respiratory depression can occur, resulting in impaired gas exchange and respiratory acidosis.
4. A client has a new prescription for Tetracycline. Which of the following instructions should be included?
- A. Take the medication with milk.
- B. Avoid prolonged sun exposure.
- C. Take the medication at bedtime.
- D. Expect urine to turn dark yellow.
Correct answer: B
Rationale: The correct instruction to include for a client prescribed Tetracycline is to 'Avoid prolonged sun exposure.' Tetracycline can cause photosensitivity, making the client more sensitive to the sun's rays. This can lead to adverse reactions like sunburn or skin rashes. Therefore, it is crucial for the client to minimize sun exposure and wear protective clothing when outdoors. Choice A is incorrect because taking Tetracycline with milk can reduce its absorption. Choice C is incorrect as there is no specific requirement to take Tetracycline at bedtime. Choice D is also incorrect as Tetracycline does not typically cause dark yellow urine.
5. An adolescent client has a new prescription for Clomipramine for OCD. Which of the following instructions should the nurse include to minimize an adverse effect of this medication?
- 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: To minimize the adverse effect of photophobia associated with Clomipramine, the client should be advised to wear sunglasses when outdoors. Clomipramine is a tricyclic antidepressant (TCA) known to cause anticholinergic effects like photophobia, which can be reduced by protecting the eyes with sunglasses when exposed to bright light. Choices B, C, and D are incorrect because checking temperature daily, taking the medication in the morning, and adding extra calories to the diet are not specifically related to minimizing the adverse effect of photophobia caused by Clomipramine.
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