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. The nurse is assessing a 3-month-old infant who had a pylorotomy yesterday. This child should be medicated for pain based on which finding?
- A. Restlessness
- B. Clenched Fist
- C. Increased pulse rate
- D. Increased respiratory rate
Correct answer: A
Rationale: In infants, restlessness can be a significant indicator of discomfort or pain, necessitating appropriate pain management. While choices B, C, and D can also be associated with pain, restlessness is a more general and reliable indicator in this scenario. A clenched fist might indicate pain or distress, but it is not as specific as restlessness in assessing pain in infants. Increased pulse rate and respiratory rate can be influenced by various factors other than pain, making them less reliable indicators of pain in this context.
3. A client complains of paresthesia in the fingers and toes and experiences hand spasms when the blood pressure cuff is inflated. Which serum laboratory finding should the nurse expect to find when assessing the client?
- A. Elevated serum calcium
- B. Low serum magnesium
- C. Low serum calcium
- D. Elevated serum potassium
Correct answer: C
Rationale: The correct answer is C: Low serum calcium. Hand spasms and paresthesia are indicative of potential hypocalcemia, which is characterized by low serum calcium levels. Elevated serum calcium (Choice A) is not consistent with the symptoms described. Low serum magnesium (Choice B) and elevated serum potassium (Choice D) are not typically associated with hand spasms and paresthesia.
4. The nurse working on a mental health unit is prioritizing nursing care activities due to a staffing shortage. One practical nurse (PN) is on the unit with the nurse, and another RN is expected to arrive within two hours. Clients need to be awakened, and morning medications need to be prepared. Which plan is best for the nurse to implement?
- A. Wake all the clients and instruct them to go to the dining area for medication administration
- B. Explain to the clients that it will be necessary to cooperate until another RN arrives
- C. Ask the PN to administer medications as clients are awakened so both nurses are available
- D. Allow the clients to sleep until a third staff person can assist with unit activities
Correct answer: C
Rationale: The best plan for the nurse to implement is to ask the PN to administer medications as clients are awakened. This approach ensures that medication administration and client care are efficiently managed despite the staffing shortage. Option A is incorrect as it may disrupt the workflow and create unnecessary chaos. Option B is not the best choice as it does not address the immediate need for medication administration. Option D is not ideal as it delays client care until additional staff arrive, potentially compromising patient safety and timely medication administration.
5. A client who is newly diagnosed with type 2 diabetes mellitus (DM) receives a prescription for metformin (Glucophage) 500 mg PO twice daily. What information should the nurse include in this client’s teaching plan? (Select all that apply.)
- A. Take an additional dose for signs of hyperglycemia
- B. Recognize signs and symptoms of hypoglycemia.
- C. Report persistent polyuria to the healthcare provider.
- D. Use sliding scale insulin for finger stick glucose elevation.
Correct answer: D
Rationale: The correct answer is D. Metformin does not require additional doses for hyperglycemia, and sliding scale insulin is not typically used with metformin. It is important for the client to recognize signs and symptoms of hypoglycemia, report persistent polyuria to the healthcare provider, and take the medication with meals. Teaching the client to use sliding scale insulin for finger stick glucose elevation is not appropriate in this case because metformin is the prescribed medication, and its mechanism of action differs from insulin therapy. The client should be educated on the importance of taking metformin with meals to reduce gastrointestinal side effects and to report any persistent polyuria, which could indicate poor blood sugar control.
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