HESI LPN
HESI Fundamentals Study Guide
1. When reviewing a client’s fluid and electrolyte status, what should the nurse report to the provider?
- A. Potassium 5.4
- B. Sodium 140
- C. Calcium 8.6
- D. Magnesium 2.0
Correct answer: A
Rationale: The correct answer is A: 'Potassium 5.4'. A potassium level of 5.4 is elevated (normal range is typically 3.5-5.0 mEq/L) and may indicate hyperkalemia, which can have serious cardiac implications. Elevated potassium levels can lead to life-threatening arrhythmias, so immediate reporting and intervention are necessary. Choice B, 'Sodium 140', falls within the normal range (135-145 mEq/L) and does not require immediate reporting. Choice C, 'Calcium 8.6', falls within the normal range (8.5-10.5 mg/dL) and is not an immediate concern. Choice D, 'Magnesium 2.0', is within the normal range (1.5-2.5 mEq/L) and does not need urgent reporting. Therefore, the nurse should prioritize reporting the elevated potassium level as it poses the most immediate risk.
2. A nurse is caring for a client who has tuberculosis. Which of the following precautions should the nurse plan to implement when working with the client?
- A. Airborne
- B. Droplet
- C. Protective
- D. Contact
Correct answer: A
Rationale: Tuberculosis is an infectious disease that requires airborne precautions to prevent the transmission of infectious droplets. Airborne precautions involve wearing a mask, such as an N95 respirator, to protect against inhaling infectious particles. Droplet precautions are for diseases spread through respiratory droplets larger than those in airborne transmission, such as influenza. Protective precautions are not specific to respiratory infections and are more general measures to protect patients from harm. Contact precautions are used for diseases spread by direct or indirect contact, such as MRSA or C. diff infections, not for tuberculosis.
3. A client with type 1 diabetes mellitus is resistant to learning self-injection of insulin. Which of the following statements should the nurse make?
- A. Ask, 'Tell me what I can do to help you overcome your fear of giving yourself injections.'
- B. Instruct, 'You need to learn how to give yourself insulin injections immediately.'
- C. State, 'Insulin injections are important for managing your diabetes, so you must learn them.'
- D. Mention, 'Many people with diabetes manage well with insulin injections.'
Correct answer: A
Rationale: The correct answer is A. Asking the client what can be done to help overcome the fear of self-injections demonstrates empathy, understanding, and a willingness to support the client in addressing their barriers. This approach facilitates open communication, acknowledges the client's feelings, and involves them in the decision-making process. Choices B and C are authoritarian and may increase resistance in the client by being directive and not considering the client's perspective. Choice D, while positive, does not directly address the client's fear and resistance to self-injections, missing the opportunity to explore the underlying issues.
4. Which nutritional assessment data should be collected to best reflect total muscle mass in an adolescent?
- A. Height in inches or centimeters.
- B. Weight in kilograms or pounds.
- C. Triceps skinfold thickness.
- D. Upper arm circumference.
Correct answer: D
Rationale: The correct answer is 'Upper arm circumference.' Upper arm circumference is a better indicator of total muscle mass in adolescents compared to height, weight, or triceps skinfold thickness. Triceps skinfold thickness primarily reflects subcutaneous fat, while weight and height are not specific to muscle mass. Upper arm circumference directly measures the muscle mass in the upper arm and can provide a more accurate assessment in this context. Therefore, choices A, B, and C are incorrect because they do not directly reflect total muscle mass in adolescents.
5. A parent asks a nurse about his infant's expected physical development during the first year of life. Which of the following information should the nurse include?
- A. A 10-month-old infant can pull up to a standing position.
- B. A 6-month-old infant can walk with assistance.
- C. A 12-month-old infant can jump with both feet.
- D. An 8-month-old infant can crawl on hands and knees.
Correct answer: A
Rationale: The correct answer is A. By 10 months, infants can typically pull up to a standing position as part of their physical development. Walking with assistance usually begins around 9-12 months, not at 6 months (choice B). Jumping with both feet is a skill that usually develops around 24 months, not at 12 months (choice C). Crawling on hands and knees typically starts around 6-9 months, not at 8 months (choice D). Therefore, the most accurate information to include for an infant's expected physical development at 10 months is the ability to pull up to a standing position.
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