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. Following rectal surgery, a female client is very anxious about the pain she may experience during defecation. The nurse should collaborate with the healthcare provider to administer which type of medication?
- A. Bulk-forming agent
- B. Antianxiety agent
- C. Stool softener
- D. Stimulant cathartic
Correct answer: C
Rationale: After rectal surgery, a stool softener is the most appropriate medication to help prevent pain and straining during defecation. Stool softeners work by increasing the water content of the stool, making it easier to pass without discomfort. Bulk-forming agents (Choice A) help add mass to the stool but may not address the immediate post-operative discomfort. Antianxiety agents (Choice B) would address the anxiety but not the physical discomfort. Stimulant cathartics (Choice D) are not recommended after rectal surgery as they can cause cramping and increased bowel movements, potentially exacerbating pain.
3. An adult male is admitted to the intensive care unit because he experienced a sudden onset of sharp chest pain and shortness of breath earlier today. Following an emergent pulmonary angiogram, the client is diagnosed with a pulmonary embolism. Which intervention is most important for the nurse to include in this client’s plan of care?
- A. Monitor signs of increased bleeding
- B. Instruct on the use of incentive spirometry
- C. Observe for confusion and restlessness
- D. Administer intravenous opioids for severe pain
Correct answer: A
Rationale: In a patient diagnosed with a pulmonary embolism, the most critical intervention is to monitor for signs of increased bleeding. Pulmonary embolism treatment often involves anticoagulation therapy, which increases the risk of bleeding. Monitoring for signs of bleeding such as bruising, petechiae, hematuria, or gastrointestinal bleeding is essential to prevent complications. Instructing on the use of incentive spirometry can be beneficial for preventing pulmonary complications but is not as urgent as monitoring for bleeding. Observing for confusion and restlessness may indicate hypoxia but is not the most crucial intervention in this scenario. Administering intravenous opioids for severe pain might be necessary but is not the priority compared to monitoring for bleeding, which is directly related to the treatment for pulmonary embolism.
4. Identify the placement of the stapes footplate into the bony labyrinth.
- A. Fenestra vestibuli
- B. Fenestra cochleae
- C. Tympanic membrane
- D. Round window
Correct answer: A
Rationale: The correct answer is A: Fenestra vestibuli. The stapes footplate is placed into the fenestra vestibuli of the bony labyrinth. This structure is also known as the oval window and is located at the junction of the middle ear and inner ear. Choice B, Fenestra cochleae, is incorrect as this opening is also known as the round window and is located near the base of the cochlea. Choice C, Tympanic membrane, is incorrect as it is also known as the eardrum and separates the external ear from the middle ear. Choice D, Round window, is incorrect as it is the opening covered by the secondary tympanic membrane and is important for the dissipation of sound waves in the cochlea.
5. Before administering an intramuscular injection, the nurse's finger is stuck with the needle. Which action should the nurse take?
- A. Go to the emergency room to have blood drawn
- B. Prepare the medication using a new syringe
- C. Apply clean gloves before giving the medication
- D. Review the medical history in the client's chart
Correct answer: B
Rationale: In this scenario, if the nurse's finger is stuck with the needle before administering the injection, the correct action is to prepare the medication using a new syringe. This step is crucial to prevent contamination and ensure the safety of the patient. Going to the emergency room to have blood drawn is unnecessary and does not address the immediate issue of contamination. Applying clean gloves is important for infection control but does not address the potential contamination from the needlestick. Reviewing the medical history in the client's chart is important for overall patient care but is not the priority in this situation where immediate action is required to prevent harm.
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