HESI RN
HESI Fundamentals Quizlet
1. A client is to receive 10 mEq of KCl diluted in 250 ml of normal saline over 4 hours. At what rate should the nurse set the client's intravenous infusion pump?
- A. 13 ml/hour.
- B. 63 ml/hour.
- C. 80 ml/hour.
- D. 125 ml/hour.
Correct answer: B
Rationale: The correct calculation involves dividing the total volume by the total time. In this case, 250 ml/4 hours = 63 ml/hour. The dose of KCl is not used in the calculation as the focus is on the rate of infusion over the specified time period. Choice A (13 ml/hour) is incorrect as it does not result from the correct calculation. Choice C (80 ml/hour) and Choice D (125 ml/hour) are also incorrect calculations and do not match the correct rate of infusion required.
2. When caring for an immobile client, what nursing diagnosis has the highest priority?
- A. Risk for fluid volume deficit.
- B. Impaired gas exchange.
- C. Risk for impaired skin integrity.
- D. Altered tissue perfusion.
Correct answer: B
Rationale: When caring for an immobile client, the nursing diagnosis with the highest priority is impaired gas exchange. This is because impaired gas exchange implies difficulty with breathing, which is essential for sustaining life. Adequate oxygenation is crucial for all bodily functions, and any impairment in gas exchange can lead to serious complications, making it the priority nursing diagnosis to address in an immobile client. Choices A, C, and D are important considerations as well when caring for an immobile client, but they are secondary to impaired gas exchange. Risk for fluid volume deficit may occur due to immobility, but ensuring proper gas exchange takes precedence as it directly impacts the client's immediate survival. Risk for impaired skin integrity is a concern in immobile clients but does not pose an immediate threat to life like impaired gas exchange. Altered tissue perfusion is also critical but is usually a consequence of impaired gas exchange, reinforcing the priority of addressing gas exchange first.
3. The nurse determines that a postoperative client's respiratory rate has increased from 18 to 24 breaths/min. Based on this assessment finding, which intervention is most important for the nurse to implement?
- A. Encourage the client to increase ambulation in the room.
- B. Offer the client a high-carbohydrate snack for energy.
- C. Force fluids to thin the client's pulmonary secretions.
- D. Determine if pain is causing the client's tachypnea.
Correct answer: D
Rationale: An increased respiratory rate can be a sign of various issues postoperatively, including pain. Assessing and managing pain is crucial as it can lead to tachypnea. Pain, anxiety, and fluid accumulation in the lungs can all contribute to an increased respiratory rate. Therefore, determining if pain is causing the tachypnea is the most important intervention to address the underlying cause. Encouraging ambulation, offering snacks, or forcing fluids are not the priority in this situation as pain assessment takes precedence in managing the increased respiratory rate.
4. The client is weak from inactivity due to a 2-week hospitalization. In planning care for the client, which range of motion (ROM) exercises should the nurse include?
- A. Passive ROM exercises to all joints on all extremities four times a day.
- B. Active ROM exercises to both arms and legs two or three times a day.
- C. Active ROM exercises with weights twice a day, 20 repetitions each.
- D. Passive ROM exercises to the point of resistance and slightly beyond.
Correct answer: B
Rationale: Active ROM exercises are preferred over passive ROM to restore strength. Performing them on both arms and legs two or three times a day is effective in promoting muscle strength and mobility without the need for external assistance. Choice A is incorrect as passive ROM exercises may not help in restoring strength. Choice C is not recommended as using weights may be too strenuous for a weak client. Choice D is incorrect as passive ROM exercises to the point of resistance and slightly beyond may cause discomfort or injury to the weak client.
5. Why is it most important to start intravenous infusions in the upper extremities rather than the lower extremities of adults?
- A. Superficial veins are more easily found in the feet and ankles.
- B. A decreased flow rate could lead to thrombosis formation.
- C. It is more challenging to move a cannulated extremity when using the leg or foot.
- D. Veins in the feet and ankles are located deep, making the procedure more painful.
Correct answer: B
Rationale: The most critical reason for initiating intravenous infusions in the upper extremities of adults is to reduce the risk of thrombosis (B). Venous return is typically better in the upper extremities, decreasing the likelihood of thrombus formation, which could be life-threatening if dislodged. Although superficial veins are easily found in the feet and ankles (A), this is not the primary reason for choosing the upper extremities. Handling a leg or foot with an IV (C) is not significantly more challenging than handling an arm or hand. The depth of veins in the feet and ankles (D) does not primarily determine the site for IV placement.
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