HESI LPN
CAT Exam Practice
1. The public health nurse received funding to initiate a primary prevention program in the community. Which program best fits the nurse’s proposal?
- A. Case management and screening for clients with HIV.
- B. Regional relocation center for earthquake victims.
- C. Vitamin supplements for high-risk pregnant women.
- D. Lead screening for children in low-income housing.
Correct answer: C
Rationale: The correct answer is C: Vitamin supplements for high-risk pregnant women. This option aligns with primary prevention by preventing deficiencies before they occur, which is a key aspect of primary prevention. Providing vitamin supplements to high-risk pregnant women can help prevent birth defects and complications. Choices A, B, and D do not align with primary prevention strategies. Case management and screening for clients with HIV (Choice A) is more of a secondary prevention strategy aimed at early detection and management. A regional relocation center for earthquake victims (Choice B) is focused on addressing the aftermath of a disaster rather than preventing it. Lead screening for children in low-income housing (Choice D) is more about early detection and intervention rather than primary prevention.
2. A new mother asks the nurse if the newborn infant has an infection because the healthcare provider prescribed a blood test called the TORCH screen test. Which response should the nurse offer to the mother's inquiry?
- A. Rising titers identify the etiology of certain neuro-sensory birth defects
- B. The screen determines the risk for inherited anomalies in the newborn
- C. The test identifies the correct antibiotic to give the newborn for an infection
- D. Exposure to infections that can cross the placenta cause a positive antibody titer
Correct answer: D
Rationale: The TORCH screen test is used to detect infections that can affect the newborn by showing if there was exposure to these infections. Choice A is incorrect because the TORCH screen test is not specifically for identifying the etiology of neuro-sensory birth defects. Choice B is incorrect because the test does not determine the risk for inherited anomalies. Choice C is incorrect because the test is not used to identify the correct antibiotic for an infection, but rather to detect infections that may have affected the newborn.
3. The nurse is teaching a male adolescent recently diagnosed with type 1 diabetes mellitus (DM) about self-injecting insulin. Which approach is best for the nurse to use to evaluate the effectiveness of the teaching?
- A. Observe him demonstrating the self-injection technique to another diabetic adolescent.
- B. Ask the adolescent to describe his comfort level with injecting himself with insulin.
- C. Review his glycosylated hemoglobin level 3 months after the teaching session.
- D. Have the adolescent list the steps for safe insulin administration.
Correct answer: C
Rationale: Reviewing the glycosylated hemoglobin level after a few months is the best approach to evaluate the effectiveness of teaching self-injection. This measurement provides an objective indicator of the adolescent's glucose control over time, reflecting the impact of insulin self-administration education. Choices A, B, and D do not directly assess the long-term impact of the teaching on the adolescent's diabetes management.
4. The nurse is assessing a client with Addison's disease who is weak, dizzy, disoriented, and has dry oral mucous membranes, poor skin turgor, and sunken eyes. Vital signs are blood pressure 94/44, heart rate 123 beats/minute, respiration 22 breaths/minute. Which intervention should the nurse implement first?
- A. Assess extremity strength and resistance
- B. Report a sodium level of 132 mEq/L or mmol/L (SI units)
- C. Measure and record the cardiac QRS complex
- D. Check current finger stick glucose
Correct answer: D
Rationale: The client’s symptoms suggest possible adrenal crisis or hypoglycemia. Checking glucose is a priority to rule out hypoglycemia, which requires immediate intervention. The client is presenting with symptoms indicative of hypoglycemia, which can be life-threatening if not promptly addressed. Assessing extremity strength, reporting sodium levels, or measuring the cardiac QRS complex are not the most urgent actions in this scenario.
5. A client receives a prescription for acetylcysteine (Mucomyst) 1.4 grams per nasogastric tube q4 hours. Acetylcysteine is available as a 10% solution (10 grams/100ml). How many ml of the 10% solution should the nurse administer per dose?
- A. 7
- B. 10
- C. 14
- D. 1.4 grams of acetylcysteine is equivalent to 14 ml of a 10% solution.
Correct answer: D
Rationale: To determine the amount of the 10% acetylcysteine solution to administer, convert the 1.4 grams to milligrams (1.4 grams = 1400 mg). Then, as the 10% solution contains 10 grams (10,000 mg) per 100 ml, it means there are 1000 mg of acetylcysteine in every 10 ml of the solution (10,000 mg / 100 ml = 100 mg/ml). Therefore, to administer 1400 mg (1.4 grams) of acetylcysteine, the nurse should give 14 ml of the 10% solution. Choices A, B, and C are incorrect as they do not accurately convert the amount of acetylcysteine to the corresponding volume of the 10% solution.
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