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. Which type of Leukocyte is involved with allergic responses and the destruction of parasitic worms?
- A. Neutrophils
- B. Lymphocytes
- C. Eosinophils
- D. Monocytes
Correct answer: C
Rationale: Eosinophils are the correct answer. Eosinophils are specialized white blood cells that play a crucial role in allergic responses and combating parasitic infections. They release substances to destroy parasites and modulate allergic reactions. Neutrophils (Choice A) are mainly involved in fighting bacterial infections. Lymphocytes (Choice B) play a key role in the immune response, including antibody production, but are not primarily responsible for combating parasites or allergic responses. Monocytes (Choice D) are involved in immune defense, differentiating into macrophages or dendritic cells, but they are not mainly associated with allergic responses or parasitic worm destruction.
3. The nurse is caring for a comatose client. Which assessment finding provides the greatest indication that the client has an open airway?
- A. The client has asymmetrical chest expansion
- B. Percussion reveals dullness over the lung area
- C. Bilateral breath sounds can be auscultated
- D. The client has been turned q2h
Correct answer: C
Rationale: The correct answer is C: "Bilateral breath sounds can be auscultated." This finding indicates that air is moving adequately in and out of both lungs, confirming an open airway. Options A, B, and D are incorrect. Asymmetrical chest expansion may indicate lung or chest wall abnormalities, percussion revealing dullness over the lung area may suggest consolidation or fluid, and turning the client q2h is a position change intervention to prevent complications, not a direct assessment of airway patency.
4. A client is admitted to the labor and delivery unit in early labor, and the nurse assesses the status of her contractions. The frequency of contractions is most accurately evaluated by counting the minutes and seconds in which manner?
- A. From the peak of one contraction to the peak of the next contraction
- B. From the beginning of one contraction to the end of that contraction
- C. From the beginning of one contraction to the beginning of the next contraction
- D. From the end of one contraction to the beginning of the next contraction
Correct answer: C
Rationale: The frequency of contractions is measured from the beginning of one contraction to the beginning of the next contraction. This timing is crucial in determining the progress of labor. Choice A, measuring from peak to peak, is incorrect as it assesses the duration between the highest points of contractions, which is not how frequency is calculated. Choice B, measuring from the beginning to the end of one contraction, is incorrect as it does not consider the start of the next contraction. Choice D, measuring from the end of one contraction to the beginning of the next contraction, is incorrect as it misses the initial onset of the following contraction.
5. When caring for a laboring client whose contractions are occurring every 2-3 minutes, the nurse should document that the pump is infusing how many ml/hour? (Enter numeric value only. If rounding is required, round to the nearest whole number. Click on each chart tab for additional information. Please be sure to scroll to the bottom right corner of each tab to view all information contained in the client’s medical record.)
- A. 5
- B. 10
- C. 15
- D. 20
Correct answer: A
Rationale: The correct infusion rate can be calculated based on the information provided in the chart. With contractions occurring every 2-3 minutes, the recommended infusion rate is 5 ml/hr. This rate ensures proper hydration and medication delivery to support the client during labor. Choices B, C, and D are incorrect as they do not align with the calculated rate based on the contractions frequency and the client's needs.
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