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. A client with diabetes mellitus is experiencing polyuria, polydipsia, and polyphagia. What do these symptoms indicate?
- A. Hypoglycemia
- B. Diabetic ketoacidosis (DKA)
- C. Hyperosmolar hyperglycemic state (HHS)
- D. Insulin shock
Correct answer: B
Rationale: Polyuria, polydipsia, and polyphagia are classic signs of diabetic ketoacidosis (DKA), which occurs due to a combination of hyperglycemia and ketone production. Hypoglycemia (Choice A) is characterized by low blood sugar levels, leading to symptoms like confusion, shakiness, and sweating, which are different from the symptoms described in the scenario. Hyperosmolar hyperglycemic state (HHS) (Choice C) typically presents with severe hyperglycemia, dehydration, and altered mental status, rather than the triad of symptoms mentioned. Insulin shock (Choice D) refers to a severe hypoglycemic reaction due to excessive insulin, manifesting with confusion, sweating, and rapid heartbeat, not the symptoms seen in the client with diabetes mellitus described in this scenario.
3. Before selecting which medication to administer, which action should the nurse implement if a postoperative client reports incisional pain and has two prescriptions for PRN analgesia?
- A. Compare the client’s pain scale rating with the prescribed dosing.
- B. Determine which prescription will have the quickest onset of action.
- C. Ask the client to choose which medication is needed for the pain.
- D. Document the client’s report of pain in the electronic medical record.
Correct answer: A
Rationale: When a postoperative client reports incisional pain and has two prescriptions for PRN analgesia, the nurse should first compare the client’s pain scale rating with the prescribed dosing. This action ensures that the client receives the appropriate medication based on their pain level. Determining the onset of action or asking the client to choose the medication does not guarantee that the right medication is administered according to the pain intensity. Documenting the pain report is important but should not be the first action when deciding which medication to administer.
4. A client with a history of chronic pain requests a nonopioid analgesic. The client is alert but has difficulty describing the exact nature and location of the pain to the nurse. What action should the nurse implement next?
- A. Administer the analgesic as requested.
- B. Request a pain assessment from another nurse.
- C. Ask the client to describe the pain more precisely.
- D. Delay administration until the pain is better described.
Correct answer: D
Rationale: The correct action for the nurse to implement next is to delay administration until the pain is better described. It is essential to have a clear understanding of the nature and location of the pain before administering any analgesic to ensure appropriate and effective pain management. Requesting a pain assessment from another nurse or asking the client to describe the pain more precisely would also be appropriate actions to obtain more information before administering the analgesic. Administering the analgesic as requested without a clear description of the pain may not address the client's needs effectively and could potentially lead to ineffective pain management.
5. A client with ulcerative colitis is experiencing frequent diarrhea. What is the priority nursing diagnosis?
- A. Risk for impaired skin integrity
- B. Fluid volume deficit
- C. Imbalanced nutrition: less than body requirements
- D. Activity intolerance
Correct answer: B
Rationale: The correct answer is B: Fluid volume deficit. In a client with ulcerative colitis experiencing frequent diarrhea, the priority nursing diagnosis is addressing the potential fluid volume deficit due to significant fluid loss. Maintaining adequate hydration is crucial to prevent complications associated with dehydration. While choices A, C, and D can also be concerns for a client with ulcerative colitis, addressing fluid volume deficit takes precedence as it directly impacts the client's physiological stability and can lead to serious complications if not managed promptly.
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