HESI LPN
Fundamentals of Nursing HESI
1. Heparin 20,000 units in 500 ml D5W at 50 ml/hour has been infusing for 5.5 hours. How much heparin has the client received?
- A. 11,000 units.
- B. 13,000 units.
- C. 15,000 units.
- D. 17,000 units.
Correct answer: A
Rationale: To calculate the total amount of heparin received, multiply the infusion rate (50 ml/hour) by the total infusion time (5.5 hours). This results in 275 ml of the solution infused. Since there are 20,000 units of heparin in 500 ml, there are 800 units per ml. Therefore, 275 ml contains 220,000 units. However, the heparin is diluted in 500 ml, so the client has received half of this amount, which is 110,000 units. Therefore, the correct answer is 11,000 units. Choices B, C, and D are incorrect as they do not reflect the correct calculation based on the provided information.
2. In an emergency situation, the charge nurse on the night shift at an urgent care center has to deal with admitting clients of higher acuity than usual due to a large fire in the area. Which style of leadership and decision-making would be best in this circumstance?
- A. Assume a decision-making role
- B. Seek input from staff
- C. Use a non-directive approach
- D. Shared decision-making with others
Correct answer: A
Rationale: In an emergency situation such as dealing with patients of higher acuity due to a large fire, it is crucial for the charge nurse to assume a decision-making role. This style of leadership allows for quick and efficient decision-making to manage the increased acuity of patients effectively. Seeking input from staff (Choice B) may delay critical decisions needed in emergencies. Using a non-directive approach (Choice C) or shared decision-making with others (Choice D) may not be suitable in urgent situations where immediate actions are required to address the high acuity of patients.
3. A nursing assistive personnel (AP) is providing AM care to patients. Which action by the NAP will require the nurse to intervene?
- A. Not offering a backrub to a patient with fractured ribs
- B. Not offering to wash the hair of a patient with neck trauma
- C. Turning off the television while giving a backrub to the patient
- D. Turning the patient's head with neck injury to the side when giving oral care
Correct answer: D
Rationale: The correct answer is D. Turning a patient's head with a neck injury to the side when giving oral care can lead to harm or further injury. The neck should be kept in a neutral position to prevent exacerbation of the injury. Choices A, B, and C are not actions that require immediate nurse intervention. Not offering a backrub, not washing a patient's hair, or turning off the television are not critical issues that pose harm to the patient's well-being or safety.
4. The nurse is caring for a 4-year-old 2 hours after tonsillectomy and adenoidectomy. Which of the following assessments must be reported immediately?
- A. Vomiting of dark emesis
- B. Complaints of throat pain
- C. Apical heart rate of 110
- D. Increased restlessness
Correct answer: D
Rationale: Increased restlessness must be reported immediately as it may indicate bleeding or other complications post-tonsillectomy and adenoidectomy. This could be a sign of a developing issue that requires urgent intervention. Vomiting of dark emesis, complaints of throat pain, and an apical heart rate of 110 are important to monitor but do not indicate an immediate need for reporting as compared to the potential seriousness of increased restlessness in this scenario.
5. A client with a diagnosis of myocardial infarction (MI) is being treated. Which laboratory value would be most concerning?
- A. Troponin level of 0.5 ng/mL
- B. Creatine kinase-MB (CK-MB) of 5.0 ng/mL
- C. Serum potassium of 4.5 mEq/L
- D. Blood glucose of 180 mg/dL
Correct answer: A
Rationale: A troponin level of 0.5 ng/mL is elevated, indicating myocardial damage, making it the most concerning finding in a client with a myocardial infarction (MI). Troponin is a highly specific marker for cardiac muscle damage, and elevated levels suggest ongoing injury to the heart muscle. While Creatine kinase-MB (CK-MB) is also a cardiac enzyme, troponin is more specific and sensitive for myocardial damage. Serum potassium and blood glucose levels are important parameters to monitor in MI patients, but in this scenario, the elevated troponin level takes precedence as it directly reflects cardiac injury.
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