HESI LPN
CAT Exam Practice
1. 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.
2. A client is admitted with pyelonephritis, and cultures reveal an Escherichia coli infection. The client is allergic to penicillins, and the healthcare provider prescribed vancomycin IV. The nurse should plan to carefully monitor the client for which finding during IV administration?
- A. Tissue sloughing upon extravasation
- B. Elevated blood pressure and heart rate
- C. Tinnitus and vertigo
- D. Erythema of the face, neck, and chest
Correct answer: C
Rationale: The correct answer is C: Tinnitus and vertigo. Vancomycin can cause ototoxicity and nephrotoxicity, leading to symptoms like tinnitus and vertigo. Monitoring for these adverse effects is crucial to prevent further complications. Choices A, B, and D are incorrect because tissue sloughing, elevated blood pressure and heart rate, and erythema of the face, neck, and chest are not typically associated with vancomycin administration. Therefore, the nurse should focus on monitoring for signs of ototoxicity and nephrotoxicity such as tinnitus and vertigo.
3. Following morning care, a client with C-5 spinal cord injury who is sitting in a wheelchair becomes flushed and complains of a headache. Which intervention should the nurse implement first?
- A. Check for any kinks or obstructions in the client’s Foley tubing
- B. Assess the client’s blood pressure every 15 minutes
- C. Administer a prescribed PRN dose of hydralazine (Apresoline)
- D. Educate the client on recognizing symptoms of dysreflexia
Correct answer: B
Rationale: In a client with a C-5 spinal cord injury experiencing flushing and a headache, the priority intervention is to assess the client's blood pressure every 15 minutes. These symptoms could indicate autonomic dysreflexia, a potentially life-threatening condition. Assessing the blood pressure is crucial to identify and address this emergency situation promptly. Checking for kinks or obstructions in the Foley tubing (Choice A) is important but not the priority in this scenario. Administering hydralazine (Choice C) without knowing the blood pressure could be harmful as it may lead to a sudden drop in blood pressure. Educating the client on recognizing symptoms of dysreflexia (Choice D) is important for long-term management but is not the immediate action needed in this acute situation.
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. Assessment findings of a 3-hour-old newborn include: axillary temperature of 97.7°F, heart rate of 140 beats/minute with a soft murmur, and irregular respiratory rate at 42 breaths/min. Based on these findings, what action should the nurse implement?
- A. Place a pulse oximeter on the heel
- B. Swaddle the infant in a warm blanket
- C. Record the findings on the flow sheet
- D. Check the vital signs in 15 minutes
Correct answer: C
Rationale: The correct action for the nurse to take in this scenario is to record the findings on the flow sheet. The newborn's axillary temperature, heart rate, and respiratory rate are within normal limits for a 3-hour-old newborn. Therefore, there is no immediate need for intervention or further assessment. Swaddling the infant in a warm blanket, placing a pulse oximeter on the heel, or checking the vital signs in 15 minutes are not necessary actions based on the normal assessment findings presented. These actions could potentially disrupt the newborn or lead to unnecessary interventions when the baby is stable.
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