which type of leukocyte is involved with allergic responses and the destruction of parasitic worms
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Nursing Elites

HESI LPN

CAT Exam Practice Test

1. Which type of Leukocyte is involved with allergic responses and the destruction of parasitic worms?

Correct answer: C

Rationale: Eosinophils are the correct answer. Eosinophils are specialized white blood cells that play a crucial role in allergic responses and combating parasitic infections. They release substances to destroy parasites and modulate allergic reactions. Neutrophils (Choice A) are mainly involved in fighting bacterial infections. Lymphocytes (Choice B) play a key role in the immune response, including antibody production, but are not primarily responsible for combating parasites or allergic responses. Monocytes (Choice D) are involved in immune defense, differentiating into macrophages or dendritic cells, but they are not mainly associated with allergic responses or parasitic worm destruction.

2. A client with myasthenia gravis (MG) is receiving immunosuppressive therapy. Review of recent laboratory test results shows that the client’s serum magnesium level has decreased below the normal range. In addition to contacting the healthcare provider, what nursing action is most important?

Correct answer: D

Rationale: The correct answer is to observe the rhythm on the telemetry monitor. Decreased magnesium levels can lead to cardiac issues, such as arrhythmias. Monitoring the heart rhythm is crucial in this situation. Checking visual difficulties (choice A) is not directly related to the potential cardiac effects of low magnesium levels. Noting the hemoglobin level (choice B) and assessing for hand and joint pain (choice C) are not the priority when dealing with low magnesium levels and possible cardiac complications.

3. Before administering an intramuscular injection, the nurse's finger is stuck with the needle. Which action should the nurse take?

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.

4. An older client comes to the clinic with a family member. When the nurse attempts to take the client’s health history, the client does not respond to questions clearly. What action should the nurse implement first?

Correct answer: A

Rationale: The correct action for the nurse to implement first is to assess the surroundings for noise and distractions. This step is crucial as environmental factors can affect the client's ability to respond clearly. By minimizing noise and distractions, the nurse can create a more conducive environment for effective communication. Providing a printed form (Choice B) may help but addressing environmental factors should come first. Deferring the health history (Choice C) or asking the family member to answer the questions (Choice D) should not be the initial steps, as they do not directly address the issue of unclear communication with the client.

5. A man calls the hospital and asks to talk with the nurse about his girlfriend who was extremely intoxicated on admission and is receiving services for detoxification. He knows that she is in the facility and asks the nurse about her condition. What is the nurse's best response?

Correct answer: C

Rationale: The nurse must adhere to confidentiality rules and cannot confirm the presence or condition of the client. Choice A is incorrect because disclosing the client's condition breaches confidentiality. Choice B is wrong as it reveals the client's room number, which is also a breach of confidentiality. Choice D is not the best response as it involves sharing information about the client without verifying the caller's identity or relationship to the client.

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