HESI LPN
HESI PN Exit Exam 2024 Quizlet
1. What is the function of the enzyme lactase in the digestive system?
- A. Breaks down lactose into glucose and galactose
- B. Breaks down proteins into amino acids
- C. Converts starch into maltose
- D. Breaks down fats into fatty acids
Correct answer: A
Rationale: The correct answer is A: 'Breaks down lactose into glucose and galactose.' Lactase is an enzyme in the small intestine that specifically breaks down lactose, the sugar found in milk, into glucose and galactose for absorption. Choice B is incorrect because proteins are broken down into amino acids by protease enzymes. Choice C is incorrect because the enzyme amylase converts starch into maltose. Choice D is incorrect as lipase enzymes break down fats into fatty acids.
2. A healthcare provider is preparing a 2-year-old child for surgery. What preoperative teaching should be provided to this child?
- A. Explaining the procedure in simple terms
- B. Using a doll to demonstrate the procedure
- C. Showing pictures of the hospital environment
- D. Allowing the child to play with medical equipment
Correct answer: B
Rationale: Using a doll to demonstrate the procedure is the most appropriate preoperative teaching method for a 2-year-old child. It helps them understand what to expect in a non-threatening way by providing a visual representation of the upcoming surgery. Explaining the procedure in simple terms may be too abstract for a child of this age, as they may not fully comprehend verbal explanations. Showing pictures of the hospital environment may not be as effective as using a doll, as it may not provide a concrete understanding of the actual procedure. Allowing the child to play with medical equipment is unsafe and does not adequately prepare them for the surgery, as it may lead to misunderstandings or fear regarding the equipment's actual use during the surgery.
3. The healthcare provider is caring for a client with dehydration. Which assessment finding indicates that the client is responding to treatment?
- A. Dry mucous membranes
- B. Increased urine output
- C. Decreased heart rate
- D. Elevated blood pressure
Correct answer: B
Rationale: Increased urine output is the correct assessment finding that indicates the client is responding to treatment for dehydration. When a client is dehydrated, their urine output tends to decrease as the body tries to conserve fluids. Therefore, an increase in urine output suggests that the client's hydration status is improving. Dry mucous membranes (Choice A) are a sign of dehydration and would not indicate a positive response to treatment. Decreased heart rate (Choice C) and elevated blood pressure (Choice D) are not specific indicators of hydration status in a client with dehydration.
4. A client with asthma is prescribed a corticosteroid inhaler. What instruction should the nurse give about the inhaler?
- A. Use it only during asthma attacks
- B. Rinse the mouth after each use to prevent oral thrush
- C. It will provide immediate relief during an asthma attack
- D. Increase the dose if breathing does not improve
Correct answer: B
Rationale: The correct instruction for a client using a corticosteroid inhaler is to rinse the mouth after each use to prevent the development of oral thrush, a common side effect of these inhalers. Choice A is incorrect as corticosteroid inhalers are often used regularly as a maintenance treatment, not just during asthma attacks. Choice C is incorrect because corticosteroid inhalers provide long-term control of asthma symptoms, not immediate relief during an attack. Choice D is incorrect and potentially dangerous advice as increasing the dose without medical guidance can lead to adverse effects.
5. The hospital is planning to downsize and eliminate a number of staff positions as a cost-saving measure. To assist staff in this change process, the nurse manager is preparing for the "unfreezing" phase of change. With this approach and phase the nurse manager should
- A. Discuss with the staff how to deal with any defensive behavior
- B. Explain to the unit staff why change is necessary
- C. Assist the staff during the acceptance of the new changes
- D. Clarify what the changes mean to the community and hospital
Correct answer: B
Rationale: The "unfreezing" phase involves preparing staff for change by explaining the necessity and benefits of the change, helping them to understand and accept it.