HESI LPN
HESI Fundamentals Study Guide
1. 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.
2. A nurse observes an assistive personnel (AP) preparing to obtain blood pressure with a regular size cuff for a client who is obese. Which of the following explanations should the nurse give the AP?
- A. Using a cuff that is too small will result in an inaccurately high reading.
- B. Using a cuff that is too large will result in an inaccurately low reading.
- C. The regular size cuff is appropriate for all clients.
- D. You should use a cuff of any size as long as it fits.
Correct answer: A
Rationale: The correct answer is A: 'Using a cuff that is too small will result in an inaccurately high reading.' When obtaining blood pressure for an obese client, it is crucial to use a larger cuff to ensure an accurate reading. Choice B is incorrect because using a cuff that is too large for an obese client would actually result in an inaccurately low reading. Choice C is incorrect as a regular size cuff is not appropriate for obese clients due to their larger arm circumference. Choice D is incorrect because using a cuff of any size as long as it fits is not suitable for obtaining accurate blood pressure readings on an obese client.
3. A nurse in an outpatient clinic is caring for a client who has a new prescription for an antihypertensive medication. Which of the following instructions should the nurse give the client?
- A. “Get up and change positions slowly.”
- B. “Avoid eating aged cheese and smoked meat.”
- C. “Report any unusual bruising or bleeding to the doctor immediately.”
- D. “Eat the same amount of foods that contain vitamin K every day.”
Correct answer: A
Rationale: The correct instruction for the nurse to give the client who is starting on antihypertensive medication is to 'Get up and change positions slowly.' Antihypertensive medications can cause orthostatic hypotension, a drop in blood pressure when changing positions, so changing positions slowly helps prevent this adverse effect. Choice B about avoiding aged cheese and smoked meat is more relevant for clients taking monoamine oxidase inhibitors (MAOIs) due to potential interactions. Choice C regarding reporting unusual bruising or bleeding is more applicable for clients on anticoagulants. Choice D about consuming consistent amounts of vitamin K-containing foods daily is important for clients taking warfarin, not antihypertensive medications.
4. A staff nurse is teaching a newly hired nurse about alternatives to the use of restraints on clients who are confused. Which of the following instructions should the staff nurse include?
- A. Remove clocks from the client’s room
- B. Use full-length side rails on the client’s bed
- C. Check on the client frequently while they are in the restroom
- D. Encourage physical activity throughout the day to expend energy
Correct answer: D
Rationale: Encouraging physical activity throughout the day is an effective way to manage confusion in clients and reduce the need for restraints. Physical activity helps in expending energy, promoting circulation, and improving overall well-being. Removing clocks from the client’s room (choice A) may not directly address the issue of confusion or reduce the need for restraints. Using full-length side rails on the client’s bed (choice B) can actually increase the risk of entrapment and should be avoided. Checking on the client frequently while they are in the restroom (choice C) is important for monitoring safety but may not directly address the underlying issue of confusion and the need for restraints.
5. While changing a client's postoperative dressing, the nurse observes a red and swollen wound with a moderate amount of yellow and green drainage and a foul odor. Given there is a positive MRSA, which is the most important action for the nurse to take?
- A. Force oral fluids
- B. Request a nutrition consult
- C. Initiate contact precautions
- D. Limit visitors to immediate family only
Correct answer: C
Rationale: The correct action for the nurse to take in this situation is to initiate contact precautions. MRSA (Methicillin-resistant Staphylococcus aureus) is a highly contagious bacterium that spreads through direct contact. Contact precautions involve wearing gloves and gowns to prevent the spread of infection to other patients or healthcare workers. Force-feeding oral fluids, requesting a nutrition consult, or limiting visitors to immediate family only are not the most appropriate actions in this scenario. These actions do not directly address the need to prevent the spread of MRSA, which is crucial in a healthcare setting.
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