HESI LPN
CAT Exam Practice
1. A client with acute renal failure (ARF) is admitted for uncontrolled type 1 diabetes mellitus and hyperkalemia. The nurse administers an IV dose of regular insulin per sliding scale. Which intervention is the most important for the nurse to include in this client’s plan of care?
- A. Monitor the client’s cardiac activity via telemetry.
- B. Maintain venous access with an infusion of normal saline.
- C. Assess glucose levels via finger stick every 4 to 6 hours.
- D. Evaluate hourly urine output for the return of normal renal function.
Correct answer: A
Rationale: Monitoring cardiac activity is crucial in this scenario because hyperkalemia can lead to serious cardiac dysrhythmias, which can be life-threatening. Regular monitoring of the client’s cardiac activity via telemetry allows for early detection of any potential cardiac complications. Maintaining venous access with a normal saline infusion is important for hydration but does not address the immediate risk of cardiac dysrhythmias posed by hyperkalemia. Assessing glucose levels is essential in diabetes management but is not the priority when dealing with hyperkalemia-induced cardiac risks. Evaluating hourly urine output for the return of normal renal function is important in ARF but is not as urgent as monitoring the client's cardiac activity in the context of hyperkalemia.
2. While teaching a young male adult to use an inhaler for his newly diagnosed asthma, the client stares into the distance and appears to be concentrating on something other than the lesson the nurse is presenting. What action should the nurse take?
- A. Remind the client of the importance of using a rescue inhaler for asthma management
- B. Leave the client alone to process his thoughts about the inhaler
- C. Ask the client what he is thinking about at that moment
- D. Pause and inquire if the client has any questions or needs clarification
Correct answer: C
Rationale: In this scenario, the most appropriate action for the nurse to take is to ask the client what he is thinking about at that moment. By doing so, the nurse can understand the client's concerns or distractions, which can then be addressed effectively during the teaching session. Option A is incorrect as it assumes the client is not paying attention due to forgetfulness about the importance of the inhaler, which may not be the case. Option B is incorrect because leaving the client alone without addressing the issue does not facilitate effective learning. Option D, although closer, does not directly address the client's distraction and may not uncover the underlying issue causing the lack of focus.
3. A 13-year-old girl, diagnosed with diabetes mellitus Type 1 at the age of 9, is admitted to the hospital in diabetic ketoacidosis. Which occurrence is the most likely cause of the ketoacidosis?
- A. Ate an extra peanut butter sandwich before gym class
- B. Incorrectly drew up and administered too much insulin
- C. Was not hungry, so she skipped eating lunch
- D. Has had a cold and ear infection for the past two days
Correct answer: B
Rationale: The correct answer is B. Incorrect insulin administration is a common cause of diabetic ketoacidosis. Administering too much insulin can lead to uncontrolled hyperglycemia, where the body starts breaking down fat for energy, resulting in the production of ketones. Choices A, C, and D are less likely to directly cause diabetic ketoacidosis. Eating an extra peanut butter sandwich, skipping lunch, or having a cold and ear infection would not directly lead to the metabolic derangements seen in diabetic ketoacidosis.
4. The school nurse is screening students for spinal abnormalities and instructs each student to stand up and then touch their toes. Which finding indicates that a student should be referred for scoliosis evaluation?
- A. Inability to touch their toes
- B. Asymmetry of the shoulders when standing upright
- C. Audible crepitus when bending
- D. An exaggerated upper thoracic convex curvature
Correct answer: B
Rationale: Asymmetry of the shoulders when standing upright is a common indicator of scoliosis. This finding suggests a possible spinal abnormality and should prompt further evaluation. Choices A, C, and D are not specific indicators of scoliosis. Inability to touch their toes may indicate flexibility issues or tightness in the hamstrings. Audible crepitus when bending may suggest joint degeneration or inflammation. An exaggerated upper thoracic convex curvature could indicate poor posture or other spinal abnormalities but is not directly indicative of scoliosis.
5. The nurse is preparing to administer an oral antibiotic to a client with unilateral weakness, ptosis, mouth drooping, and aspiration pneumonia. What is the priority nursing assessment that should be done before administering this medication?
- A. Ask the client about soft food preferences
- B. Auscultate the client’s breath sounds
- C. Obtain and record the client’s vital signs
- D. Determine which side of the body is weak
Correct answer: B
Rationale: The correct answer is to auscultate the client’s breath sounds. Assessing breath sounds is crucial in this scenario as it helps ensure that the client can safely swallow the oral antibiotic without aspirating. Unilateral weakness, ptosis, mouth drooping, and aspiration pneumonia indicate potential swallowing difficulties, making it essential to assess breath sounds for any signs of respiratory issues. Asking about food preferences (choice A) may be relevant later but is not the priority before administering the medication. While obtaining vital signs (choice C) is important, assessing breath sounds takes precedence in this case. Determining which side of the body is weak (choice D) is not the priority assessment before administering the oral antibiotic.
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