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 is admitted with acute low back pain. What action should the nurse implement to promote comfort?
- A. Ambulate with a walker for upper body support
- B. Perform abdominal curls to stretch the back muscles
- C. Position in semi-Fowler's with the knees flexed
- D. Encourage straight leg raises while lying supine
Correct answer: C
Rationale: Positioning the client in semi-Fowler's with the knees flexed is the most appropriate action to promote comfort in a client with acute low back pain. This position helps alleviate low back pain by reducing the pressure on the spine and supporting its natural curvature. Ambulating with a walker could strain the back, performing abdominal curls may exacerbate the pain, and straight leg raises while lying supine could cause further discomfort. Therefore, only positioning the client in semi-Fowler's with the knees flexed is the correct choice for promoting comfort in this scenario.
3. When administering ceftriaxone sodium intravenously to a client before surgery, which assessment finding requires the most immediate intervention by the nurse?
- A. Headache
- B. Pruritus
- C. Nausea
- D. Stridor
Correct answer: D
Rationale: Stridor is a high-pitched, noisy breathing sound that can indicate a serious condition like airway obstruction or a severe allergic reaction, necessitating immediate intervention to maintain the client's airway and prevent further complications. While headache, pruritus, and nausea are important to assess and manage, they are not as immediately life-threatening as stridor, which requires prompt attention to prevent respiratory compromise.
4. A 5-week-old infant who developed projectile vomiting over the last two weeks is diagnosed with hypertrophic pyloric stenosis. Which intervention should the nurse plan to implement?
- A. Instruct the mother to give the child sugar water only
- B. Maintain intravenous fluid therapy per prescription
- C. Provide Pedialyte feedings via the nasogastric tube
- D. Offer the infant Pedialyte feedings every 2 hours
Correct answer: B
Rationale: Maintaining intravenous fluid therapy is crucial for managing dehydration and electrolyte imbalances caused by the vomiting in hypertrophic pyloric stenosis. Instructing the mother to give sugar water only (Choice A) is not appropriate as it does not address the dehydration and electrolyte imbalances adequately. Providing Pedialyte feedings via the nasogastric tube (Choice C) may not be sufficient to manage the severe fluid and electrolyte losses caused by the condition. Offering Pedialyte feedings every 2 hours (Choice D) may not be as effective as maintaining intravenous fluid therapy, especially in cases where rapid rehydration is necessary.
5. A client with a history of myocardial infarction (MI) is receiving a beta-blocker medication. What is the most important outcome for the nurse to monitor?
- A. Heart rate and blood pressure
- B. Blood glucose levels
- C. Respiratory rate
- D. Liver function tests
Correct answer: A
Rationale: The correct answer is A: Heart rate and blood pressure. When a client with a history of myocardial infarction (MI) is on a beta-blocker medication, monitoring heart rate and blood pressure is crucial. Beta-blockers lower heart rate and blood pressure, so monitoring these parameters helps assess the medication's effectiveness and prevent complications like bradycardia or hypotension. Choices B, C, and D are not the most important outcomes to monitor in this scenario. Blood glucose levels are typically monitored in clients with diabetes or when using medications that affect glucose levels. Respiratory rate is important in assessing respiratory function and oxygenation, while liver function tests are more relevant when monitoring the impact of medications on liver health.
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