HESI LPN
Medical Surgical Assignment Exam HESI
1. A client admitted to a surgical unit is being evaluated for an intestinal obstruction. The HCP prescribes an NG tube to be inserted and placed on intermittent low wall suction. Which intervention should the nurse implement to facilitate proper tube placement?
- A. Soak the NG tube in warm water
- B. Insert the tube with the client's head tilted back
- C. Apply suction while inserting the tube
- D. Elevate the head of the bed 60 to 90 degrees
Correct answer: D
Rationale: Elevating the head of the bed 60 to 90 degrees is the correct intervention to facilitate proper placement of the NG tube. This position helps to use gravity to guide the tube smoothly into the gastrointestinal tract. Soaking the NG tube in warm water (Choice A) is not necessary for proper placement. Inserting the tube with the client's head tilted back (Choice B) can cause discomfort and may lead to improper placement. Applying suction while inserting the tube (Choice C) is not recommended as it can cause trauma to the nasal passages and esophagus.
2. How are type IV hypersensitivity reactions different from all other types (I, II, or III) of hypersensitivity reactions?
- A. They involve antigen-antibody complexes.
- B. They are mediated by T cells and do not involve antibodies.
- C. They result in immediate allergic reactions.
- D. They are the least severe form of hypersensitivity.
Correct answer: B
Rationale: Type IV hypersensitivity reactions are mediated by T cells and cytokine release, leading to delayed reactions, unlike types I, II, and III, which involve antibodies. Choice A is incorrect because type IV reactions do not involve antigen-antibody complexes. Choice C is incorrect as type IV reactions do not result in immediate allergic reactions. Choice D is incorrect as type IV reactions are not the least severe form of hypersensitivity; in fact, they are known to cause significant tissue damage and inflammation.
3. The nurse is completing the preoperative assessment of a client who is scheduled for a laparoscopic cholecystectomy under general anesthesia. Which finding warrants notification of the HCP prior to proceeding with the scheduled procedure?
- A. Light yellow coloring of the client's skin and eyes.
- B. The client's blood pressure reading of 184/88 mm Hg.
- C. The client vomits 20 ml of clear yellowish fluid.
- D. The IV insertion site is red, swollen, and leaking IV fluid.
Correct answer: B
Rationale: The correct answer is B. A blood pressure reading of 184/88 mm Hg indicates hypertension, which can increase the risks associated with surgery. The healthcare provider should be notified to manage the blood pressure before proceeding with the scheduled procedure. Choices A, C, and D are incorrect: A, light yellow coloring of the client's skin and eyes may indicate jaundice, but it is not an immediate concern for the scheduled procedure; C, vomiting clear yellowish fluid may suggest bile reflux, but it does not pose an immediate risk to the procedure; D, red, swollen, and leaking IV insertion site indicates a local complication that requires intervention but does not have a direct impact on proceeding with the scheduled surgery.
4. 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.
5. A client with liver cirrhosis is at risk for developing hepatic encephalopathy. Which clinical manifestation should the nurse monitor for?
- A. Kussmaul respirations
- B. Asterixis (flapping tremor)
- C. Bradycardia
- D. Hypertension
Correct answer: B
Rationale: Corrected Rationale: Asterixis, also known as a flapping tremor, is a common sign of hepatic encephalopathy, indicating neurological dysfunction due to liver failure. Kussmaul respirations (option A) are associated with metabolic acidosis, which is not a typical manifestation of hepatic encephalopathy. Bradycardia (option C) and hypertension (option D) are not typically associated with hepatic encephalopathy; in fact, hepatic encephalopathy is more commonly associated with alterations in mental status, neuromuscular abnormalities, and changes in behavior.
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