HESI LPN
HESI Fundamentals Study Guide
1. When admitting a 5-month-old who has vomited 9 times in the past 6 hours, what should the healthcare provider observe for signs of which overall imbalance?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Increased serum hemoglobin levels
- D. Decreased serum potassium levels
Correct answer: B
Rationale: When a 5-month-old infant vomits multiple times, there is a risk of developing metabolic alkalosis due to the loss of stomach acid. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. It is caused by the loss of hydrogen ions from the body, often through vomiting. Metabolic acidosis (choice A) is unlikely in this scenario because it is more commonly associated with conditions like renal failure or diabetic ketoacidosis. Choice C, increased serum hemoglobin levels, is not typically a direct consequence of vomiting. Choice D, decreased serum potassium levels, may occur with vomiting but is not the primary concern when a patient is vomiting excessively.
2. A patient has damage to the cerebellum. Which disorder is most important for the nurse to assess?
- A. Impaired balance
- B. Hemiplegia
- C. Muscle sprain
- D. Lower extremity paralysis
Correct answer: A
Rationale: When the cerebellum is damaged, it leads to impaired balance. The cerebellum plays a crucial role in coordinating movements and maintaining balance. Therefore, assessing the patient's balance is essential in determining the extent of cerebellar damage. Options B, C, and D are incorrect because hemiplegia refers to paralysis of one side of the body, muscle sprain is a soft tissue injury, and lower extremity paralysis involves loss of function in the lower limbs. These conditions are not directly associated with damage to the cerebellum.
3. The patient is receiving chemotherapy for breast cancer. Which of the following laboratory values would be most important to monitor?
- A. White blood cell count
- B. Hemoglobin level
- C. Serum creatinine
- D. Blood glucose level
Correct answer: A
Rationale: Monitoring the white blood cell count is crucial when a patient is undergoing chemotherapy for breast cancer. Chemotherapy can lead to neutropenia, a condition of low white blood cell count, which significantly increases the risk of infections. Monitoring white blood cell count helps healthcare providers intervene promptly to prevent severe infections. Hemoglobin level, while important in assessing oxygen-carrying capacity, is not the priority in this scenario. Serum creatinine and blood glucose levels are not directly impacted by chemotherapy for breast cancer.
4. Which of the following should a group of community health nurses plan as part of a primary prevention program for occupational pulmonary diseases?
- A. Screening for early symptoms
- B. Providing treatment for diagnosed conditions
- C. Elimination of the exposure
- D. Increasing awareness of symptoms
Correct answer: C
Rationale: The correct answer is C: 'Elimination of the exposure.' Primary prevention programs for occupational pulmonary diseases aim to prevent the development of these diseases by eliminating or minimizing exposure to harmful substances in the workplace. Screening for early symptoms (Choice A) focuses on secondary prevention, detecting diseases at an early stage. Providing treatment for diagnosed conditions (Choice B) is part of tertiary prevention, managing and treating established diseases. Increasing awareness of symptoms (Choice D) may help in early detection but does not directly address the prevention of exposure, which is crucial for primary prevention of occupational pulmonary diseases.
5. A nurse is caring for a client who has a new prescription for tube feeding. The nurse understands that the provider prescribed tube feeding because the client:
- A. Is unable to swallow foods by mouth
- B. Has a gastrointestinal obstruction
- C. Requires additional caloric intake to support healing
- D. Is at risk for aspiration
Correct answer: A
Rationale: The correct answer is A: 'Is unable to swallow foods by mouth.' Tube feeding is prescribed when a client is unable to safely swallow food by mouth but has a functional gastrointestinal tract. Option B, 'Has a gastrointestinal obstruction,' is incorrect as tube feeding is not typically prescribed for this reason. Option C, 'Requires additional caloric intake to support healing,' is incorrect because tube feeding is specifically for clients who are unable to swallow. Option D, 'Is at risk for aspiration,' is also incorrect as tube feeding would not be the primary intervention for aspiration risk; other strategies to reduce aspiration risk would be implemented instead.
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