HESI LPN
HESI CAT Exam 2022
1. A client is receiving lidocaine IV at 3 mg/minute. The pharmacy dispenses a 500 ml IV solution of normal saline (NS) with 2 grams of lidocaine. The nurse should regulate the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: D
Rationale: The infusion rate is calculated based on the concentration of lidocaine and the prescribed rate of infusion. First, convert lidocaine's weight to milligrams (2 grams = 2000 mg). Then, use the formula: (Total volume in ml * dose in mg) / 60 minutes. For this case, (500 ml * 2000 mg) / 60 minutes = 45 ml/hour. Therefore, the correct answer is D. Choices A, B, and C are incorrect as they do not reflect the accurate calculation based on the provided concentration and infusion rate.
2. In what order should the unit manager implement interventions to address the UAP’s behavior after they leave the unit without notifying the staff?
- A. Note date and time of the behavior.
- B. Discuss the issue privately with the UAP.
- C. Plan for scheduled break times.
- D. Evaluate the UAP for signs of improvement.
Correct answer: A
Rationale: The correct order for the unit manager to implement interventions to address the UAP's behavior is to first note the date and time of the behavior. Proper documentation is crucial as it provides a factual record of the incident. This documentation can be used to address the behavior effectively and to track any patterns or improvements in the future. Discussing the issue with the UAP privately (choice B) should come after documenting the behavior. Planning for scheduled break times (choice C) is unrelated to the situation described and does not address the UAP's behavior of leaving without notifying the staff. Evaluating the UAP for signs of improvement (choice D) can only be done effectively after the behavior has been addressed and interventions have been implemented.
3. The nurse is assigned to care for four surgical clients. After receiving report, which client should the nurse see first?
- A. An older client receiving packed RBCs on the third day postoperatively for colon resection
- B. An older client with continuous bladder irrigation who is 2 days postoperatively for bladder surgery
- C. An adult one day postoperatively from laparoscopic cholecystectomy requesting pain medication
- D. An adult in Buck’s traction, scheduled for hip arthroplasty within the next 12 hours
Correct answer: B
Rationale: The correct answer is B because the client with continuous bladder irrigation post-bladder surgery is at risk for complications like infection or bleeding. This client requires immediate attention to assess for any signs of complications such as urinary retention, hemorrhage, or infection. Choices A, C, and D have less urgent needs compared to a client with continuous bladder irrigation, which requires priority assessment.
4. An adult suffered burns to the face and chest resulting from a grease fire. On admission, the client was intubated, and a 2-liter bolus of normal saline was administered IV. Currently, the normal saline is infusing at 250 ml/hour. The client’s heart rate is 120 beats/minute, blood pressure is 90/50 mmHg, respirations are 12 breaths/minute over the ventilated 12 breaths for a total of 24 breaths/minute, and the central venous pressure (CVP) is 4 mm H2O. Which intervention should the nurse implement?
- A. Increase the rate of normal saline infusion
- B. Infuse an additional bolus of normal saline
- C. Lower the head of the bed to a recumbent position
- D. Bring a tracheostomy tray to the bedside
Correct answer: B
Rationale: The correct intervention is to infuse an additional bolus of normal saline. The client's presentation with a heart rate of 120 beats/minute, hypotensive blood pressure of 90/50 mmHg, and low CVP of 4 mm H2O indicates hypovolemic shock. Administering more normal saline can help in restoring intravascular volume and improving perfusion. Increasing the rate of normal saline infusion (Choice A) is not the best choice as it may lead to fluid overload. Lowering the head of the bed to a recumbent position (Choice C) could worsen hypotension by reducing venous return. Bringing a tracheostomy tray to the bedside (Choice D) is not a priority at this time as the client is already intubated, and the immediate concern is addressing the hypovolemia.
5. A 9-year-old received a short arm cast for a right radius. To relieve itching under the child’s cast, which instructions should the nurse provide to the parents?
- A. Blow cool air from a hair dryer under the cast
- B. Twist the cast back and forth
- C. Shake powder into the cast
- D. Push a pencil under the cast edge
Correct answer: A
Rationale: Blowing cool air from a hair dryer under the cast is a safe method to relieve itching without damaging the cast or causing injury. The air helps to dry out the moisture that is causing the itching. Twisting the cast back and forth (choice B) can create pressure points and discomfort for the child. Shaking powder into the cast (choice C) can introduce foreign material that may cause skin irritation. Pushing a pencil under the cast edge (choice D) can injure the child's skin or even dislodge the cast.
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