ATI RN
ATI Pharmacology
1. A healthcare provider is caring for a client who is prescribed Furosemide. Which of the following laboratory values should the healthcare provider monitor?
- A. Serum potassium
- B. Serum calcium
- C. Serum sodium
- D. Serum magnesium
Correct answer: A
Rationale: Furosemide is a loop diuretic that can cause hypokalemia (low potassium levels) due to increased potassium excretion in the urine. Monitoring serum potassium levels is crucial to prevent complications such as cardiac arrhythmias. Therefore, the healthcare provider should closely monitor the client's serum potassium levels when they are prescribed Furosemide. While monitoring other electrolytes like sodium and magnesium may also be important in certain situations, the priority for a client prescribed Furosemide is to monitor serum potassium levels due to the risk of hypokalemia.
2. When administering medications to a 4-month-old infant, which of the following pharmacokinetic principles should be considered? (Select all that apply.)
- A. Infants have a more rapid gastric emptying time.
- B. Infants have immature liver function.
- C. Infants' blood-brain barrier is poorly developed.
- D. Infants have an increased ability to absorb topical medications.
Correct answer: B
Rationale: When administering medications to a 4-month-old infant, the pharmacokinetic principle to consider is that infants have immature liver function until 1 year of age. This requires medications metabolized by the liver to be administered in smaller dosages. While infants do have a more rapid gastric emptying time, immature liver function is a more critical pharmacokinetic consideration in this context. Additionally, although infants have a poorly developed blood-brain barrier, this relates more to pharmacodynamic effects rather than pharmacokinetic principles. The statement about infants having an increased ability to absorb topical medications is not directly related to pharmacokinetic principles, making choice B the correct answer.
3. A healthcare provider is reviewing a client's medical history and notes that the client has a prescription for Digoxin. Which of the following findings is a manifestation of Digoxin toxicity?
- A. Elevated blood pressure
- B. Bradycardia
- C. Yellow-tinged vision
- D. Ringing in the ears
Correct answer: C
Rationale: Yellow-tinged vision, along with nausea, vomiting, and confusion, are common manifestations of Digoxin toxicity. Visual disturbances are important to recognize as they can indicate the need for immediate medical attention and potential adjustment of Digoxin therapy to prevent serious complications. Elevated blood pressure is not typically associated with Digoxin toxicity; instead, hypotension may occur. Bradycardia is a common therapeutic effect of Digoxin rather than a sign of toxicity. Ringing in the ears, or tinnitus, is also a potential side effect of Digoxin but is less specific to toxicity compared to yellow-tinged vision.
4. A preschooler weighing 44 lb is to receive Amoxicillin 20 mg/kg/day PO divided equally every 12 hr. The available amoxicillin suspension is 250 mg/5 mL. How many mL should the nurse administer per dose?
- A. 4 mL
- B. 5 mL
- C. 6 mL
- D. 3 mL
Correct answer: A
Rationale: To calculate the dosage per administration: First, convert the weight to kg (44 lb / 2.2 lb/kg = 20 kg). Then, calculate the required dosage per dose: (20 mg/kg/day x 20 kg) / 2 (for every 12 hr dosing) = 200 mg per dose. To determine the mL per dose, divide the required dosage by the concentration of the amoxicillin suspension: (200 mg / 250 mg) x 5 mL = 4 mL per dose. Therefore, the correct answer is 4 mL. Choice B (5 mL) is incorrect because the correct calculation yields 4 mL. Choices C (6 mL) and D (3 mL) are also incorrect as they do not align with the accurate calculation based on the provided information.
5. A nurse manager is reviewing the facility's policies for IV therapy with the members of his team. The nurse manager should remind the team that which of the following techniques helps minimize the risk of catheter embolism?
- A. Performing hand hygiene before and after IV insertion
- B. Rotating IV sites at least every 72 hours
- C. Minimizing tourniquet time
- D. Avoiding reinserting the needle into an IV catheter
Correct answer: D
Rationale: To minimize the risk of catheter embolism, it is crucial to avoid reinserting the needle into an IV catheter. This practice can potentially sever the end of the catheter, leading to catheter embolism. Proper insertion techniques, securement, and avoiding unnecessary manipulations of the catheter can help prevent this serious complication.
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