HESI LPN
CAT Exam Practice
1. A continuous infusion of nitroglycerin is prescribed for an adult male admitted with an acute myocardial infarction. The client is experiencing active chest pain that he describes as 8 out of 10. Which intervention is most important for the nurse to implement?
- A. Administer the infusion via an infusion pump
- B. Obtain the current serum potassium level
- C. Continuously monitor blood pressure
- D. Teach guided imagery to decrease pain
Correct answer: C
Rationale: Continuously monitoring blood pressure is crucial in this case because nitroglycerin can cause hypotension as a side effect. Monitoring blood pressure allows the nurse to assess the client's response to the medication and detect any signs of hypotension promptly. This intervention is essential to ensure the effectiveness of nitroglycerin therapy and prevent potential complications. Administering the infusion via an infusion pump is important for accurate dosing but not the most critical at this moment. Obtaining the current serum potassium level is important but not the most immediate concern when the client is experiencing active chest pain. Teaching guided imagery may be beneficial for pain management, but in this scenario, monitoring blood pressure takes precedence due to the potential side effects of nitroglycerin.
2. The nurse is admitting a client from the post-anesthesia unit to the postoperative surgical care unit. Which intervention should the nurse implement first?
- A. Advance to clear liquids as tolerated
- B. Straight catheterization if unable to void
- C. Administer Cefazolin 1 gram IVPQ q6 hours
- D. Obtain a complete blood cell count (CBC) in the morning
Correct answer: B
Rationale: The correct answer is to perform straight catheterization if the client is unable to void. This action is essential to prevent urinary retention and its potential complications following anesthesia. Option A, advancing to clear liquids, is not the priority upon admission as the focus should be on urinary function first. Option C involves administering an antibiotic, which is important but not the immediate priority. Option D, obtaining a CBC, can be done later and is not as crucial as ensuring proper urinary function postoperatively.
3. A client with intestinal obstructions has a nasogastric tube to low intermittent suction and is receiving an IV of lactated Ringer’s at 100 ml/H. Which finding is most important for the nurse to report to the healthcare provider?
- A. Gastric output of 900 mL in the last 24 hours
- B. Serum potassium level of 3.1 mEq/L or mmol/L (SI)
- C. Increased blood urea nitrogen (BUN)
- D. 24-hour intake at the current infusion rate
Correct answer: B
Rationale: The most crucial finding to report to the healthcare provider in this scenario is a serum potassium level of 3.1 mEq/L. Hypokalemia can lead to serious complications, including cardiac issues. Gastric output, increased BUN, and monitoring the 24-hour intake are essential but do not pose an immediate risk as hypokalemia does in this situation.
4. In what order should the nurse perform the steps of a surgical hand scrub prior to entering the operating room?
- A. Rinse from the fingertips to the elbow
- B. Scrape under the nails with a nail pick
- C. Use a soapy brush to scrub the hands
- D. Cleanse the arm with a lathered brush
Correct answer: B
Rationale: The correct order for performing a surgical hand scrub is to first scrape under the nails with a nail pick, then scrub the hands using a soapy brush, cleanse the arms, and finally rinse. This sequence ensures thorough cleaning and minimizes the risk of contamination. Choice A is incorrect because rinsing should be the final step, not the first. Choice C is incorrect as scrubbing the hands comes after scraping under the nails. Choice D is incorrect as cleansing the arms should follow hand scrubbing, not precede it.
5. The nurse is demonstrating wound care to a client following abdominal surgery. In what order should the nurse teach the technique?
- A. Remove old dressing using clean gloves. Discard gloves with old dressing
- B. Moisten sterile gauze with normal saline. Clean wound from least contaminated area to most contaminated area
- C. Apply sterile gauze dressing to wound area
- D. Secure dressing with tape
Correct answer: A
Rationale: The correct order ensures proper aseptic technique and wound care to prevent infection. The first step is to remove the old dressing using clean gloves to prevent contamination. Discarding the gloves with the old dressing helps maintain cleanliness. Choices B, C, and D are incorrect because cleaning the wound, applying a new dressing, and securing it should come after removing the old dressing to maintain asepsis and prevent infection.
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