HESI LPN
Medical Surgical HESI
1. A client is currently receiving an infusion labeled as 5% dextrose injection 500 ml with heparin sodium 25,000 units at 14 mL/hour per pump. A prescription is received to change the rate of the infusion to heparin 1,000 units/hour. How many ml/hour should the nurse program the infusion pump?
- A. 16 ml/hour.
- B. 18 ml/hour.
- C. 20 ml/hour.
- D. 22 ml/hour.
Correct answer: C
Rationale: To deliver 1,000 units/hour from a solution with 25,000 units in 500 ml, the rate should be set to 20 ml/hour. This is calculated by determining that the solution has 50 units/ml (25,000 units / 500 ml = 50 units/ml) and then dividing the required 1,000 units/hour by 50 units/ml, resulting in 20 ml/hour. Therefore, the nurse should program the infusion pump to deliver heparin at 20 ml/hour. Choices A, B, and D are incorrect as they do not align with the calculated rate of 20 ml/hour.
2. On the first postoperative day, the nurse finds an older male client disoriented and trying to climb over the bed railing. Previously, he was oriented to person, place, and time on admission. Which intervention should the nurse implement first?
- A. Administer a sedative.
- B. Determine the client’s blood pressure.
- C. Apply soft restraints.
- D. Call for assistance.
Correct answer: B
Rationale: The correct intervention the nurse should implement first is to determine the client’s blood pressure. Assessing the blood pressure is crucial in this situation to rule out physiological causes like hypotension leading to the client's disorientation. Administering a sedative (Choice A) without understanding the underlying cause may worsen the situation. Applying soft restraints (Choice C) should not be the initial action and can be considered later if necessary. Calling for assistance (Choice D) may be needed eventually, but assessing the client's blood pressure takes precedence to address the immediate concern.
3. In planning care for a postoperative client with hypovolemic shock, which problem is most important to include in the plan of care?
- A. Risk for infection.
- B. Risk for falls.
- C. Impaired skin integrity.
- D. Activity intolerance.
Correct answer: B
Rationale: The correct answer is B: Risk for falls. In a postoperative client with hypovolemic shock, the most crucial problem to address is the risk for falls. Hypovolemic shock can result in dizziness and weakness, making the client prone to falling. Preventing falls is essential to avoid further injury or complications. Choices A, C, and D are not the top priority in this scenario. While infection, impaired skin integrity, and activity intolerance are important concerns, preventing falls takes precedence due to the immediate risk of injury associated with hypovolemic shock.
4. The nurse determines that an adult client who is admitted to the post-anesthesia care unit (PACU) following abdominal surgery has a tympanic temperature of 94.6°F (34.4°C), a pulse rate of 88 beats/minute, a respiratory rate of 14 breaths/minute, and a blood pressure of 94/68 mmHg. Which action should the nurse implement?
- A. Check the BP every five minutes for one hour.
- B. Raise the HOB 60 to 90 degrees.
- C. Ask the client to cough and deep breathe.
- D. Take the client’s temperature using another method.
Correct answer: D
Rationale: Taking the temperature using another method is essential in this situation to verify if the low reading is accurate and requires further intervention. The tympanic temperature of 94.6°F may be inaccurate due to various factors such as improper technique or environmental conditions. Checking the blood pressure every five minutes for one hour (Choice A) is not the priority in this case as the low blood pressure reading alone does not necessitate such frequent monitoring. Raising the head of the bed 60 to 90 degrees (Choice B) is not directly related to addressing the low temperature and blood pressure. Asking the client to cough and deep breathe (Choice C) is a general intervention that may not directly address the specific concern of the low temperature reading.
5. Which additional congenital malformation is expected in 80% of infants with a myelomeningocele?
- A. Cerebral palsy
- B. Hydrocephalus
- C. Meningitis
- D. Neuroblastoma
Correct answer: B
Rationale: Hydrocephalus is the additional congenital malformation expected in 80% of infants with a myelomeningocele. Myelomeningocele is commonly associated with hydrocephalus due to the abnormal accumulation of cerebrospinal fluid in the brain. Cerebral palsy (Choice A) is a motor disorder but not typically associated with myelomeningocele. Meningitis (Choice C) is an infection of the meninges and is not a congenital malformation. Neuroblastoma (Choice D) is a type of cancer that originates in immature nerve cells and is not a typical association with myelomeningocele.
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