HESI LPN
CAT Exam Practice
1. A client with chronic alcoholism is admitted with a decreased serum magnesium level. Which snack option should the nurse recommend to this client?
- A. Cheddar cheese and crackers
- B. Carrot and celery sticks
- C. Beef bologna sausage slices
- D. Dry roasted almonds
Correct answer: D
Rationale: Dry roasted almonds are the most suitable snack option for a client with chronic alcoholism and a decreased serum magnesium level because they are high in magnesium. Magnesium is essential in addressing the deficiency. Cheddar cheese and crackers (Choice A) do not contain as much magnesium as almonds. Carrot and celery sticks (Choice B) are healthy choices but do not provide a significant amount of magnesium. Beef bologna sausage slices (Choice C) are not a good choice as processed meats are not rich in magnesium.
2. 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.
3. The nurse is developing a teaching plan for a client with acute gastritis caused by drinking contaminated water. The nurse should emphasize the need to report the onset of which problem?
- A. Low-grade fever
- B. Bruising of the skin
- C. Abdominal cramping
- D. Bloody emesis
Correct answer: D
Rationale: The correct answer is D: Bloody emesis. Bloody emesis indicates potential bleeding or severe irritation, which should be reported immediately. In the context of acute gastritis, bloody emesis could indicate a more serious complication that requires urgent medical attention. Choices A, B, and C are not typically associated with acute gastritis caused by contaminated water and do not signal as critical of a condition as bloody emesis. Low-grade fever, bruising of the skin, and abdominal cramping are more commonly associated with other conditions or may be less urgent in this context.
4. A client who is bleeding after a vaginal delivery receives a prescription for methylergonovine (Methergine) 0.4 mg IM every 2 hours, not to exceed 5 doses. The medication is available in ampules containing 0.2 mg/ml. What is the maximum dosage in mg that the nurse should administer to this client? (Enter numeric value only)
- A. 2
- B. 3
- C. 4
- D. 5
Correct answer: A
Rationale: To calculate the maximum dosage in mg that the nurse should administer, multiply the dose per administration (0.4 mg) by the maximum number of doses allowed (5 doses): 0.4 mg/dose * 5 doses = 2 mg. Therefore, the nurse should administer a maximum dosage of 2 mg to the client. Choices B, C, and D are incorrect as they do not reflect the correct calculation based on the provided information.
5. A male client approaches the nurse with an angry expression on his face and raises his voice, saying, “My roommate is the most selfish, self-centered, angry person I have ever met. If he loses his temper one more time with me, I am going to punch him out.†The nurse recognizes that the client is using which defense mechanism?
- A. Denial
- B. Splitting
- C. Projection
- D. Rationalization
Correct answer: C
Rationale: The client is projecting his feelings of anger and frustration onto his roommate, attributing his own feelings to the other person. Projection is a defense mechanism where individuals attribute their thoughts, feelings, or motives onto another person. In this scenario, the client is displacing his anger onto his roommate, thereby using projection as a defense mechanism. Denial (choice A) is refusing to acknowledge an aspect of reality. Splitting (choice B) involves viewing people as all good or all bad. Rationalization (choice D) is creating logical explanations to justify unacceptable behavior.
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