HESI LPN
CAT Exam Practice
1. The client had gastric bypass surgery yesterday. Which intervention is most important for the nurse to implement during the first 24 postoperative hours?
- A. Insert an indwelling urinary catheter
- B. Monitor for the appearance of an incisional hernia
- C. Instruct the client to eat small frequent meals
- D. Measure hourly urinary output
Correct answer: D
Rationale: Monitoring hourly urinary output is crucial during the first 24 postoperative hours to assess kidney function, fluid balance, and early detection of complications like dehydration or inadequate kidney perfusion. Inserting an indwelling urinary catheter is not routinely necessary after gastric bypass surgery unless there are specific indications. Monitoring for an incisional hernia is important but not the highest priority in the immediate postoperative period. Instructing the client to eat small frequent meals is essential for long-term dietary management after gastric bypass surgery, but not the most critical intervention during the initial 24 hours.
2. A client with a history of chronic obstructive pulmonary disease (COPD) is admitted to the hospital. The client is experiencing difficulty breathing and is very anxious. The nurse notes that the client’s oxygen saturation is 88% on room air. Which action should the nurse implement first?
- A. Place the client in a high Fowler’s position
- B. Administer supplemental oxygen
- C. Perform a thorough respiratory assessment
- D. Start an IV infusion of normal saline
Correct answer: B
Rationale: Administering supplemental oxygen is the first priority to address low oxygen saturation and ease breathing. In a client with COPD experiencing difficulty breathing and anxiety with oxygen saturation at 88%, providing supplemental oxygen takes precedence over other actions. Placing the client in a high Fowler’s position may help with breathing but does not address the immediate need for increased oxygenation. Performing a thorough respiratory assessment is important but should come after stabilizing the client's oxygen levels. Starting an IV infusion of normal saline is not the priority in this situation and does not directly address the client's respiratory distress.
3. What action should the nurse implement for a female client with cancer who has a good appetite but experiences nausea whenever she smells food cooking?
- A. Encourage family members to cook meals outdoors and bring the cooked food inside
- B. Advise the client to replace cooked foods with a variety of different nutritional supplements
- C. Assess the client’s mucus membranes and report the findings to the healthcare provider
- D. Instruct the client to take an antiemetic before every meal to prevent excessive vomiting
Correct answer: A
Rationale: The correct action for the nurse to implement is to encourage family members to cook meals outdoors and bring the cooked food inside. This strategy can help reduce the smell of cooking food and potentially alleviate the client's nausea triggered by food smells. Assessing the client's mucus membranes (choice C) is not directly related to the client's symptom of nausea triggered by food smells. Instructing the client to take an antiemetic before every meal (choice D) may not address the root cause of the issue, which is the smell of cooking food. Advising the client to replace cooked foods with nutritional supplements (choice B) does not address the immediate problem of food odors triggering nausea.
4. A client is receiving lidocaine IV at 3 mg/minute. The pharmacy dispenses a 500 ml IV solution of normal saline (NS) with 2 grams of lidocaine. The nurse should regulate the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: D
Rationale: The infusion rate is calculated based on the concentration of lidocaine and the prescribed rate of infusion. First, convert lidocaine's weight to milligrams (2 grams = 2000 mg). Then, use the formula: (Total volume in ml * dose in mg) / 60 minutes. For this case, (500 ml * 2000 mg) / 60 minutes = 45 ml/hour. Therefore, the correct answer is D. Choices A, B, and C are incorrect as they do not reflect the accurate calculation based on the provided concentration and infusion rate.
5. After witnessing a preoperative client sign the surgical consent form, what are the legal implications of the nurse's signature on the client's form as a witness?
- A. The client voluntarily grants permission for the procedure to be done
- B. The surgeon has explained to the client why the surgery is necessary
- C. The client is competent to sign the consent without impairment of judgment
- D. The client understands the risks and benefits associated with the procedure
Correct answer: C
Rationale: The nurse's signature on the consent form signifies that the client is competent to sign the consent without impairment of judgment. This legal implication ensures that the client possesses the necessary capacity to make decisions about their healthcare. Choice A is incorrect because the nurse's signature does not imply the client's voluntary permission for the procedure. Choice B is incorrect as it pertains to the surgeon's responsibility, not the nurse's. Choice D is incorrect as the nurse's signature does not confirm the client's understanding of the risks and benefits associated with the procedure.
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