HESI LPN
HESI Fundamentals Exam Test Bank
1. The healthcare provider prescribes 1,000 ml of Ringer's Lactate with 30 Units of Pitocin to run over 4 hours for a client who has just delivered a 10-pound infant by cesarean section. The tubing has been changed to a 20 gtt/ml administration set. The LPN/LVN plans to set the flow rate at how many gtt/min?
- A. 42 gtt/min
- B. 83 gtt/min
- C. 125 gtt/min
- D. 250 gtt/min
Correct answer: B
Rationale: To calculate the flow rate in drops per minute (gtt/min), the formula is Total volume (mL) ÷ Time (min) ÷ Drop factor (gtt/mL). In this case, 1000 mL ÷ 240 min ÷ 20 gtt/mL = 83 gtt/min. Therefore, setting the flow rate to 83 gtt/min ensures the correct administration of the IV fluids and medication. Choices A, C, and D are incorrect as they do not align with the correct calculation based on the provided information.
2. A client with chronic kidney disease is being assessed. Which of the following laboratory values would be most concerning?
- A. Serum creatinine of 3.0 mg/dL
- B. Serum potassium of 6.5 mEq/L
- C. Blood urea nitrogen (BUN) of 45 mg/dL
- D. Hemoglobin of 10 g/dL
Correct answer: B
Rationale: In a client with chronic kidney disease, elevated serum potassium levels (hyperkalemia) are the most concerning finding. Hyperkalemia can lead to life-threatening cardiac dysrhythmias. Monitoring and managing serum potassium levels are crucial in patients with kidney disease to prevent severe complications. While elevated creatinine (Choice A) and BUN (Choice C) are indicative of impaired kidney function, hyperkalemia poses a more immediate threat to the client's health. Hemoglobin levels (Choice D) can be affected by chronic kidney disease but are not as acutely dangerous as severe hyperkalemia.
3. A nurse observes smoke coming from under the door of the staff lounge. Which of the following actions is the nurse's priority?
- A. Extinguish the fire.
- B. Activate the fire alarm.
- C. Move clients who are nearby.
- D. Close all open doors on the unit.
Correct answer: B
Rationale: In a fire emergency, the nurse's priority is to activate the fire alarm. This action alerts others to the emergency, initiates the evacuation process, and ensures everyone's safety. Extinguishing the fire can be dangerous and should be left to trained personnel. Moving clients who are nearby might delay the activation of the alarm and can put the nurse and clients at risk. Closing all open doors on the unit is important to contain the fire but should not take precedence over alerting others through the fire alarm system.
4. A client has been admitted to the hospital with severe diarrhea. The nurse should monitor the client for which complication?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Hyperkalemia
- D. Hypercalcemia
Correct answer: A
Rationale: Severe diarrhea can lead to metabolic acidosis due to the loss of bicarbonate. When there is excessive loss of bicarbonate through diarrhea, the pH of the blood decreases, leading to metabolic acidosis. Metabolic alkalosis (Choice B) is not typically associated with severe diarrhea as it involves elevated pH and bicarbonate levels. Hyperkalemia (Choice C) is less likely with severe diarrhea as potassium is often lost along with fluids. Hypercalcemia (Choice D) is not a common complication of severe diarrhea; instead, hypocalcemia may occur due to malabsorption of calcium.
5. The patient has undergone surgery for a broken leg and has a cast in place. What should the nurse do to prevent skin impairment?
- A. Assess surfaces exposed to the edges of the cast for pressure areas.
- B. Keep the patient's blood pressure low to prevent overperfusion of tissue.
- C. Allow turning in bed to prevent complications.
- D. Encourage the patient's dietary intake to maintain hydration.
Correct answer: A
Rationale: To prevent skin impairment in a patient with a cast, the nurse should assess surfaces exposed to the edges of the cast for pressure areas. This is important to prevent pressure ulcers or skin breakdown. Keeping the patient's blood pressure low (Choice B) is not directly related to preventing skin impairment in this scenario. Allowing turning in bed (Choice C) is essential for preventing complications like pressure ulcers and is not contraindicated. Encouraging the patient's dietary intake (Choice D) to maintain hydration is not directly related to preventing skin impairment associated with a cast.
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