HESI LPN
HESI Fundamentals Exam Test Bank
1. A nurse is preparing an infusion for a client who was hospitalized with deep-vein thrombosis. The orders read: 25,000 units of heparin in 250 mL of 0.9% sodium chloride to infuse at 800 units/hr. At what rate should the nurse set the infusion pump?
- A. 8 mL/hr
- B. 10 mL/hr
- C. 12 mL/hr
- D. 15 mL/hr
Correct answer: A
Rationale: To calculate the infusion rate, use the formula: (Desired units/hr / Total units) × Volume. In this case, it would be (800 units/hr / 25,000 units) × 250 mL = 8 mL/hr. Therefore, the nurse should set the infusion pump at 8 mL/hr. Choice B, 10 mL/hr, is incorrect because it does not match the calculated rate. Choices C and D, 12 mL/hr and 15 mL/hr respectively, are also incorrect as they do not align with the correct calculation based on the provided data.
2. To prevent keratitis in an unconscious client, where should the nurse apply moisturizing ointment?
- A. Finger and toenail quicks
- B. Eyes
- C. Perianal area
- D. External ear canals
Correct answer: B
Rationale: The correct answer is B: Eyes. Applying moisturizing ointment to the eyes helps prevent keratitis, a condition that can occur due to inadequate blinking in unconscious clients, leading to corneal dryness and potential damage. Choices A, C, and D are incorrect as moisturizing ointment should not be applied to finger and toenail quicks, perianal area, or external ear canals to prevent keratitis.
3. A practical nurse is caring for a client with chronic obstructive pulmonary disease (COPD) who is receiving theophylline. Which symptom indicates that the client may be experiencing theophylline toxicity?
- A. Bradycardia
- B. Tremors
- C. Constipation
- D. Hypotension
Correct answer: B
Rationale: Tremors are a common symptom of theophylline toxicity. Other symptoms that may indicate theophylline toxicity include nausea, vomiting, and seizures. Bradycardia, constipation, and hypotension are not typically associated with theophylline toxicity. It is important for the nurse to monitor the client closely for these signs of toxicity and report them promptly to the healthcare provider to prevent further complications.
4. Why should the nurse closely monitor the IV flow rate for a 5-month-old infant with severe diarrhea receiving IV fluids?
- A. Maintaining electrolyte balance
- B. Preventing dehydration
- C. Preventing fluid overload
- D. Avoiding cardiac overload
Correct answer: C
Rationale: In infants, monitoring IV flow rates is essential to prevent fluid overload, not cardiac overload. Excessive fluid administration can lead to complications such as pulmonary edema or congestive heart failure. It is crucial to maintain a balance between providing adequate hydration and avoiding fluid overload to prevent adverse outcomes. Options A, B, and D are incorrect because the primary concern is to prevent complications related to excess fluid rather than focusing on electrolyte balance, dehydration prevention, or avoiding cardiac overload.
5. A middle-aged adult in a clinical setting mentions being at average risk for colon cancer and asks about routine screening. What should the nurse recommend?
- A. Performing a blood sample for a screening test.
- B. Scheduling a colonoscopy starting at age 60.
- C. Undergoing a fecal occult blood test annually.
- D. Having a sigmoidoscopy every 10 years.
Correct answer: C
Rationale: The correct answer is C. Colorectal cancer screening for individuals at average risk typically begins at age 50. One of the recommended options for routine screening is a fecal occult blood test done annually. Choice A is incorrect as blood samples are not used for routine colorectal cancer screening. Choice B is incorrect because colonoscopies usually start at age 50, not 60. Choice D is incorrect as sigmoidoscopies are recommended every 5 years, not every 10 years, for individuals at average risk for colon cancer.