HESI LPN
Adult Health 2 Exam 1
1. What is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space?
- A. Filtration
- B. Diffusion
- C. Osmosis
- D. Active transport
Correct answer: C
Rationale: The correct answer is C: Osmosis. Osmosis is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space to maintain cellular balance. In osmosis, water moves across a semi-permeable membrane from an area of low solute concentration (hypotonic) to an area of high solute concentration (hypertonic). This process helps regulate the water content inside cells. Choices A, B, and D are incorrect. Filtration involves the movement of solutes and solvents through a membrane due to a pressure difference, diffusion is the movement of solutes from an area of high concentration to low concentration, and active transport requires energy to move substances against their concentration gradient.
2. Which nursing activity is within the scope of practice for the practical nurse?
- A. Complete an admission assessment in the normal newborn nursery
- B. Discontinue a central venous catheter that has become dislodged
- C. Observe a client rotate the subcutaneous site for an insulin pump
- D. Monitor a continuous narcotic epidural for a postoperative client
Correct answer: C
Rationale: The correct answer is C: 'Observe a client rotate the subcutaneous site for an insulin pump.' This activity is within the scope of practice for a practical nurse as it involves observing and ensuring proper technique for using an insulin pump, which aligns with their training and responsibilities. Choices A, B, and D are beyond the typical scope of practice for a practical nurse. Completing an admission assessment for a newborn nursery is usually performed by a registered nurse. Discontinuing a dislodged central venous catheter and monitoring a narcotic epidural require advanced skills and knowledge, usually carried out by registered nurses or advanced practice nurses.
3. A client who is 24 weeks pregnant presents with a complaint of feeling dizzy when lying on her back. What is the best response by the nurse?
- A. Advise the client to lie on her side
- B. Encourage the client to drink more fluids
- C. Suggest the client elevate her legs when lying down
- D. Recommend the client take short walks throughout the day
Correct answer: A
Rationale: The correct answer is to advise the client to lie on her side. Lying on the side can prevent the compression of the vena cava, which can cause dizziness in pregnant women. Encouraging the client to drink more fluids (Choice B) may be beneficial for other conditions but is not the best response for dizziness when lying on her back. Suggesting the client elevate her legs when lying down (Choice C) is not directly related to the issue described by the client. Recommending the client take short walks throughout the day (Choice D) may be helpful for other pregnancy-related symptoms but is not the most appropriate action for dizziness when lying on her back.
4. The nurse is caring for a client who is postoperative following a hip replacement. Which intervention is most important to prevent dislocation of the prosthesis?
- A. Keep the client in a low Fowler's position.
- B. Maintain hip abduction with pillows.
- C. Encourage early ambulation.
- D. Place the client in a prone position.
Correct answer: B
Rationale: Maintaining hip abduction with pillows is the most important intervention to prevent dislocation of the hip prosthesis postoperatively. This position helps keep the hip joint stable and prevents excessive internal rotation, which can lead to dislocation. Keeping the client in a low Fowler's position (Choice A) does not provide the necessary support and stability for the hip joint. While early ambulation (Choice C) is important for preventing complications such as blood clots and promoting circulation, it is not the most crucial intervention for preventing dislocation. Placing the client in a prone position (Choice D) can be harmful and increase the risk of dislocation.
5. The mother of an 8-year-old boy tells the nurse that he fell out of a tree and hurt his arm and shoulder. Which assessment finding is the most significant indicator of possible child abuse?
- A. The child looks at the floor when answering the nurse's questions
- B. The mother's version of the injury is different from the child's version
- C. The child has several abrasions on the chest and legs
- D. The mother refuses to answer questions about family history
Correct answer: B
Rationale: In cases of possible child abuse, discrepancies between the accounts given by the child and the parent are critical indicators. This inconsistency could suggest that the injury was not accidental and may be a result of abuse. Looking at the floor while answering questions or having abrasions on the body can be concerning but are not as direct indicators of abuse as conflicting stories between the child and the parent.
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