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. The healthcare provider is evaluating a client for potential dehydration. Which assessment finding is most indicative of fluid volume deficit?

Correct answer: C

Rationale: Corrected Rationale: Decreased skin turgor is a classic sign of dehydration. When someone is dehydrated, the skin loses its elasticity and becomes less turgid. This change is easily assessed by gently pinching and pulling up the skin on the back of the hand or forearm. If the skin remains elevated or tents rather than quickly returning to its normal position, it indicates dehydration. Moist mucous membranes (Choice A) are actually a sign of adequate hydration. Increased urine output (Choice B) can be a sign of dehydration, but decreased skin turgor is a more specific indicator. Elevated blood pressure (Choice D) is not typically associated with fluid volume deficit and may indicate other health issues.

3. What nursing intervention is particularly indicated for the second stage of labor?

Correct answer: D

Rationale: During the second stage of labor, assisting the client to push effectively is crucial for the delivery of the fetus. This action helps to facilitate the expulsion of the fetus from the uterus. Providing pain medication (Choice A) is not typically done during the second stage of labor as the focus shifts to pushing and delivery. Assessing the fetal heart rate (Choice B) is important but is more relevant throughout labor, not specifically for the second stage. Monitoring the effects of oxytocin administration (Choice C) is more associated with the first stage of labor to help with uterine contractions and cervical dilation.

4. A premature infant weighing 1,200 grams at birth receives a prescription for beractant (Survanta) 120 mg endotracheal now and q6 hr for 24 hr. The recommended dose for beractant is 100 mg/kg birth weight per dose. Single-use vials of Survanta are labeled 100 mg/4 ml. What action should the nurse take?

Correct answer: A

Rationale: The correct answer is to give 4.8 ml q6 hr. To calculate the dose, you divide the prescribed dose of 120 mg by the concentration of Survanta, which is 100 mg per 4 ml. This results in 4.8 ml per dose, as 120 mg ÷ 100 mg/4 ml = 4.8 ml. Option B suggesting to notify the healthcare provider that the dose is too high is incorrect because the calculated dose of 4.8 ml is based on the recommended dose of 100 mg/kg birth weight. Option C suggesting to notify the healthcare provider that the dose is too low is incorrect as the calculated dose is based on the correct dosage calculation. Option D suggesting to give 1.2 ml q6 hr is incorrect because it doesn't align with the correct calculation.

5. The nurse is calculating the one-minute Apgar score for a newborn male infant and determines that his heart rate is 150 beats/minute, he has a vigorous cry, his muscle tone is good with total flexion, he has quick reflex irritability, and his color is dusky and cyanotic. What Apgar score should the nurse assign to the infant?

Correct answer: A

Rationale: The correct answer is A: 8. The Apgar score is calculated based on five parameters: heart rate, respiratory effort, muscle tone, reflex irritability, and color. In this case, the infant has a good heart rate, vigorous cry, good muscle tone, and quick reflex irritability, which would total to 8. The only factor affecting the score is the cyanotic color, which could indicate potential respiratory or circulatory issues. Choices B, C, and D are incorrect as they do not reflect the overall assessment provided in the scenario.

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