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 who will be going to surgery states no known allergies to any medications. What is the most important nursing action for the nurse to implement next?

Correct answer: B

Rationale: The most important action to take in this situation is to record 'no known drug allergies' on the preoperative checklist. This ensures that all healthcare staff involved in the surgery are aware of the client's stated lack of drug allergies, helping to prevent any potential adverse reactions. Assessing the client's knowledge of an allergic response (Choice A) may be valuable but is not the most crucial action at this point. Flagging 'no known drug allergies' on the front of the chart (Choice C) is less practical and visible compared to documenting it on the preoperative checklist. Assessing the client’s allergies to non-drug substances (Choice D) is not the priority in this scenario where the focus is on medications due to the upcoming surgery.

3. The healthcare provider explains through an interpreter the risks and benefits of a scheduled surgical procedure to a non-English speaking female client. The client gives verbal consent, and the healthcare provider leaves, instructing the nurse to witness the signature on the consent form. The client and interpreter then speak together in the foreign language for an additional 2 minutes until the interpreter concludes, 'She says it is OK.' What action should the nurse take next?

Correct answer: B

Rationale: Having the interpreter co-sign the consent form is the most appropriate action in this scenario. By having the interpreter co-sign, it ensures an additional layer of verification of the client's understanding and consent, which is crucial when language barriers exist. This step adds a level of confirmation to safeguard that the client's consent is both valid and well-informed. Option A is not sufficient as gestures and simple terms may not fully clarify the client's understanding, especially for complex medical procedures. Option C is unnecessary since the interpreter has already confirmed the client's consent. Option D does not involve the interpreter in validating the client's understanding, which is essential in this situation to ensure effective communication and comprehension between the client and the healthcare team.

4. A client who had a cerebrovascular accident (CVA) is paralyzed on the left side of the body and has developed a Stage II pressure ulcer on the left hip. Which nursing diagnosis describes this client’s current health status?

Correct answer: B

Rationale: The correct answer is B: 'Impaired skin integrity related to altered circulation and pressure.' This nursing diagnosis is the most appropriate as it directly addresses the Stage II pressure ulcer on the left hip, which is caused by altered circulation and pressure due to the client's left-side paralysis. Choice A is incorrect because it focuses on the risk for impaired tissue integrity rather than the current issue of impaired skin integrity. Choice C is incorrect as ineffective tissue perfusion is not the primary issue in this scenario. Choice D is incorrect as it only addresses the left-side paralysis and not the pressure ulcer or altered circulation.

5. The nurse is caring for a laboring 22-year-old primigravida following administration of regional anesthesia. In planning care for this client, what nursing intervention has the highest priority?

Correct answer: D

Rationale: The highest priority nursing intervention for a laboring client following administration of regional anesthesia is to position the client for proper distribution of anesthesia. Proper positioning ensures effective pain management during labor, optimizing the effects of the regional anesthesia. While raising the side rails and placing the call bell within reach (choice A) is important for safety, teaching the client how to push (choice B) and timing and recording uterine contractions (choice C) are vital aspects of care but are not the highest priority immediately after administering regional anesthesia.

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