HESI LPN
CAT Exam Practice
1. While a patient is receiving beta-1b interferon every other day for multiple sclerosis, which serum laboratory test findings should the nurse monitor to assess for possible bone marrow suppression caused by the medication? (Select all that apply)
- A. Platelet count
- B. White blood cell count (WBC)
- C. Sodium and potassium
- D. Red blood cell count (RBC)
Correct answer: A
Rationale: Beta-1b interferon can lead to bone marrow suppression, impacting blood cell production. Therefore, monitoring the platelet count, white blood cell count (WBC), and red blood cell count (RBC) is essential. Platelet count is a direct indicator of bone marrow function and can show early signs of bone marrow suppression. While sodium, potassium, and albumin/protein levels are important for overall health assessment, they are not directly associated with bone marrow suppression caused by the medication.
2. A client with renal disease seems anxious and presents with the onset of shortness of breath, lethargy, edema, and weight gain. Which action should the nurse implement first?
- A. Determine serum potassium level
- B. Calculate the client’s daily fluid intake
- C. Assess client for signs of vertigo
- D. Review the client’s pulse oximetry reading
Correct answer: A
Rationale: The correct answer is to determine the client's serum potassium level. In a client with renal disease experiencing symptoms like shortness of breath, lethargy, edema, and weight gain, assessing serum potassium levels is crucial. Electrolyte imbalances, including potassium, can lead to serious complications such as cardiac arrhythmias and muscle weakness. Calculating daily fluid intake may be important but addressing acute symptoms related to electrolyte imbalances takes precedence. Assessing for signs of vertigo and reviewing pulse oximetry reading are not the priority in this scenario compared to assessing and managing potential electrolyte imbalances.
3. A mother brings her child, who has a history of asthma, to the emergency room. The child is wheezing and speaking one word between each breath. The child is anxious, tachycardic, and has labored respirations. Which assessment is most important for the nurse to obtain?
- A. Type of inhaler the child typically uses on a regular basis
- B. Frequency of rescue inhaler use during the week
- C. Last dose and type of rescue inhaler used by the child
- D. Type of allergen exposure or trigger for the current episode
Correct answer: C
Rationale: The correct answer is C because knowing the last dose and type of rescue inhaler used helps assess if the child has received adequate treatment and if further intervention is needed. This information is crucial in managing an acute asthma exacerbation. Choice A, the type of inhaler the child typically uses, is less critical during an emergency. Choice B, the frequency of rescue inhaler use during the week, is important for general asthma management but does not provide immediate guidance in the acute situation. Choice D, the type of allergen exposure or trigger, is more relevant for preventive strategies and does not directly impact the immediate treatment of the child's acute asthma attack.
4. What assessment data should lead the nurse to suspect that a client has progressed from HIV infection to AIDS?
- A. Enlarged and tender cervical lymph nodes
- B. Presence of low-grade fever and sore throat
- C. Recent history of recurrent pneumonia
- D. CD4 blood cell count of 300
Correct answer: C
Rationale: The correct answer is C: 'Recent history of recurrent pneumonia.' Recurrent pneumonia is a hallmark indicator of progression to AIDS in clients with HIV infection. It signifies advanced immunosuppression when the body is unable to fight off infections effectively. Enlarged and tender cervical lymph nodes (Choice A) are more indicative of local infections or inflammation rather than AIDS progression. The presence of a low-grade fever and sore throat (Choice B) may be common in various infections and are not specific to AIDS progression. While a CD4 blood cell count of 300 (Choice D) is below the normal range and indicates immunosuppression, it alone may not be sufficient to suspect progression to AIDS without other supporting indicators like opportunistic infections such as recurrent pneumonia.
5. A client is admitted to a medical unit with the diagnosis of gastritis and chronic heavy alcohol abuse. What should the nurse administer to prevent the development of Wernicke's syndrome?
- A. Lorazepam (Ativan)
- B. Famotidine (Pepcid)
- C. Thiamine (Vitamin B1)
- D. Atenolol (Tenormin)
Correct answer: C
Rationale: Thiamine supplementation is critical in preventing Wernicke's syndrome, especially in clients with chronic alcohol use. Wernicke's syndrome is a neurological disorder caused by thiamine deficiency. Lorazepam is a benzodiazepine used for anxiety and not for preventing Wernicke's syndrome. Famotidine is an H2 blocker used to reduce stomach acid production but does not prevent Wernicke's syndrome. Atenolol is a beta-blocker used for hypertension and angina, not for preventing Wernicke's syndrome.
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