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. While assessing an older client’s fall risk, the client tells the nurse that they live at home alone and have never fallen. What action should the nurse take?
- A. Place the client on a high fall risk protocol solely based on their age
- B. Continue to obtain the client data needed to complete the fall risk survey
- C. Inform the client about falls occurring more often at the hospital than at home
- D. Record a minimal risk for falls based on the client's statement alone
Correct answer: B
Rationale: The correct action for the nurse in this scenario is to continue obtaining client data to complete the fall risk survey. This approach will help in conducting a comprehensive assessment of the client's risk factors. Placing the client on a high fall risk protocol solely based on age without a thorough assessment is premature and can lead to unnecessary interventions. Informing the client about falls in the hospital does not address the client's individual risk factors and is not relevant to the current assessment. Recording a minimal risk for falls based only on the client's statement may overlook other potential risk factors that need to be evaluated.
3. 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.
4. A child with heart failure (HF) is taking digitalis. Which sign indicates to the nurse that the child may be experiencing digitalis toxicity?
- A. Tachycardia
- B. Dyspnea
- C. Vomiting
- D. Muscle cramps
Correct answer: C
Rationale: Vomiting is a common sign of digitalis toxicity and should be closely monitored. While tachycardia is a common sign of heart failure, it is not typically associated with digitalis toxicity (Choice A). Dyspnea (Choice B) and muscle cramps (Choice D) are not specific signs of digitalis toxicity and can be present in other conditions. Therefore, the presence of vomiting should raise concerns about digitalis toxicity in the child with heart failure.
5. 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.
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