HESI RN
HESI 799 RN Exit Exam
1. The nurse needs to add a medication to a liter of 5% Dextrose in Water (D5W) that is already infusing into a client. At what location should the nurse inject the medication?
- A. Medication port
- B. IV drip chamber
- C. Y-site connector
- D. At the hub of the IV catheter
Correct answer: A
Rationale: The correct answer is the medication port. When adding medication to an already infusing IV solution, it should be done through the medication port to ensure direct delivery into the bloodstream without interrupting the primary IV line. Injecting the medication into the IV drip chamber, Y-site connector, or at the hub of the IV catheter can lead to dilution, inaccurate dosing, or potential blockages in the IV line, which can compromise the effectiveness of the medication and patient safety.
2. The healthcare provider is assessing a client with left-sided heart failure. Which laboratory value should be closely monitored?
- A. Serum sodium level
- B. Serum potassium level
- C. Serum creatinine level
- D. Serum glucose level
Correct answer: B
Rationale: In a client with left-sided heart failure, monitoring serum potassium levels is crucial. This helps in assessing kidney function and fluid balance. Elevated potassium levels can result from impaired kidney function, which is common in heart failure. Monitoring sodium levels (choice A) is important in heart failure but not specifically related to left-sided heart failure. Serum creatinine (choice C) reflects kidney function but is not the most critical value to monitor in this case. Serum glucose level (choice D) is important but not the priority when assessing left-sided heart failure.
3. The healthcare provider prescribes an IV solution of isoproterenol (Isuprel) 1 mg in 250 ml of D5W at 300 mcg/hour. The nurse should program the infusion pump to deliver how many ml/hour?
- A. 50 ml/hour
- B. 25 ml/hour
- C. 75 ml/hour
- D. 100 ml/hour
Correct answer: C
Rationale: To calculate the infusion rate, convert 1 mg to 1,000 mcg (1 mg = 1,000 mcg) and then use the formula D/H x Q, where D is the desired dose, H is the dose on hand, and Q is the quantity of solution. In this case, it would be 300 mcg/hour / 1,000 mcg x 250 ml = 75 ml/hour. Therefore, the nurse should program the infusion pump to deliver 75 ml/hour. Choice A (50 ml/hour), Choice B (25 ml/hour), and Choice D (100 ml/hour) are incorrect as they do not correspond to the calculated rate of 75 ml/hour.
4. Following a lumbar puncture, a client voices several complaints. What complaint indicates to the nurse that the client is experiencing a complication?
- A. I am having pain in my lower back when I move my legs
- B. My throat hurts when I swallow
- C. I feel sick to my stomach and am going to throw up
- D. I have a headache that gets worse when I sit up
Correct answer: D
Rationale: The correct answer is D. A post-lumbar puncture headache, ranging from mild to severe, may occur as a result of leakage of cerebrospinal fluid at the puncture site. This complication is usually managed by bed rest, analgesics, and hydration. Choices A, B, and C do not directly indicate complications associated with a lumbar puncture. Pain in the lower back when moving legs, a sore throat when swallowing, and nausea with a feeling of vomiting are not typical complications of lumbar puncture.
5. A client with chronic kidney disease (CKD) is scheduled for a hemodialysis session. Which laboratory value should the nurse report to the healthcare provider before the procedure?
- A. Serum potassium of 5.5 mEq/L
- B. Blood urea nitrogen (BUN) of 40 mg/dl
- C. Serum potassium of 6.0 mEq/L
- D. Serum creatinine of 2.5 mg/dl
Correct answer: C
Rationale: A serum potassium level of 6.0 mEq/L is dangerously high for a client with chronic kidney disease (CKD) scheduled for hemodialysis. High potassium levels can lead to cardiac complications such as arrhythmias. Therefore, it is crucial to report this value to the healthcare provider before the procedure to prevent any potential serious complications. Choices A, B, and D are not as critical in the context of preparing for a hemodialysis session. Serum potassium levels above 6.0 mEq/L require immediate attention to ensure patient safety.
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