HESI LPN
HESI Fundamentals Study Guide
1. A client with a history of chronic renal failure is admitted with generalized edema. Which laboratory value should the LPN/LVN monitor to assess the client's fluid balance?
- A. Serum potassium
- B. Serum calcium
- C. Serum albumin
- D. Serum sodium
Correct answer: C
Rationale: The correct answer is C, Serum albumin. In clients with chronic renal failure and generalized edema, monitoring serum albumin levels is crucial as it is a key indicator of fluid balance. Low serum albumin levels can contribute to edema formation due to decreased oncotic pressure, indicating fluid imbalance. Serum potassium (Choice A) is more related to kidney function and electrolyte balance in renal failure patients. Serum calcium (Choice B) is important for bone health but is not directly related to fluid balance. Serum sodium (Choice D) is more indicative of hydration status and electrolyte balance but may not directly reflect fluid balance in the context of chronic renal failure and edema.
2. 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.
3. A healthcare professional is planning to assess the abdomen of a client who reports feeling bloated for several weeks. Which of the following methods of assessment should the healthcare professional use first?
- A. Inspection
- B. Palpation
- C. Auscultation
- D. Percussion
Correct answer: A
Rationale: Inspection is the initial step in abdominal assessment as it allows the healthcare professional to visually observe any abnormalities or signs of bloating. Palpation, auscultation, and percussion are subsequent assessment techniques that follow inspection. Palpation involves feeling for tenderness, masses, or organ enlargement; auscultation is listening for bowel sounds; and percussion is used to assess the density of underlying tissues or detect the presence of fluid or air in the abdomen. In the context of a client reporting bloating, the first step should be visual inspection to gather initial information. Palpation, auscultation, and percussion come after inspection to provide a more comprehensive assessment.
4. In planning care for a premature infant with respiratory distress syndrome, nursing actions are based on the fact that the most likely cause of this problem stems from the infant's inability to
- A. Stabilize alveolar surface tension
- B. Maintain alveolar surface tension
- C. Promote normal pulmonary blood flow
- D. Regulate intra-cardiac pressure
Correct answer: B
Rationale: The correct answer is B: Maintain alveolar surface tension. Respiratory distress syndrome in premature infants is often caused by a deficiency in surfactant, a substance that helps maintain alveolar surface tension. Without adequate surfactant, the alveoli collapse, making it difficult for the infant to oxygenate effectively. Choices A, C, and D are incorrect because stabilizing alveolar surface tension is not the issue, promoting normal pulmonary blood flow and regulating intra-cardiac pressure are not directly related to the pathophysiology of respiratory distress syndrome in premature infants.
5. A client asks about the purpose of advance directives. Which of the following statements should the nurse make?
- A. They allow the court to overrule an adult client's refusal of medical treatment.
- B. They indicate the form of treatment a client is willing to accept in the event of a serious illness.
- C. They permit a client to withhold medical information from health care personnel.
- D. They allow health care personnel in the emergency department to stabilize a client's condition.
Correct answer: B
Rationale: The correct answer is B. Advance directives specify the type of medical treatment a client wishes to receive or avoid in the event of a serious illness. Choice A is incorrect because advance directives do not allow the court to overrule a client's refusal of medical treatment; they empower the client to make their own healthcare decisions. Choice C is incorrect because advance directives do not permit a client to withhold medical information; they provide guidance on the client's treatment preferences. Choice D is incorrect because advance directives do not specifically address the actions of health care personnel in the emergency department; they focus on the client's treatment preferences in general.
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