a heparin infusion is prescribed for a client who weighs 220 pounds after administering a bolus dose of 80 unitskg the nurse calculates the infusion r
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Nursing Elites

HESI LPN

CAT Exam Practice Test

1. A heparin infusion is prescribed for a client who weighs 220 pounds. After administering a bolus dose of 80 units/kg, the nurse calculates the infusion rate for the heparin sodium at 18 units/kg/hour. The available solution is Heparin Sodium 25,000 units in 5% Dextrose Injection 250 ml. The nurse should program the infusion pump to deliver how many ml/hour?

Correct answer: B

Rationale: To calculate the infusion rate, first, find the total dose required per hour, which is the patient's weight (220 pounds) multiplied by the prescribed rate (18 units/kg/hour). This equals 3960 units/hour. Next, determine how many ml of the solution contain 25,000 units; this is 250 ml. Divide the total dose required per hour (3960 units) by the units per ml (25,000 units/250 ml) to find how many ml are needed per hour. This results in 27 ml/hour. Therefore, the nurse should program the infusion pump to deliver 27 ml/hour. Choice A (18) is incorrect as it does not account for the concentration of the heparin solution. Choices C (36) and D (45) are incorrect as they do not reflect the accurate calculations based on the patient's weight and the heparin concentration in the solution.

2. Assessment findings of a 3-hour-old newborn include: axillary temperature of 97.7°F, heart rate of 140 beats/minute with a soft murmur, and irregular respiratory rate at 42 breaths/min. Based on these findings, what action should the nurse implement?

Correct answer: C

Rationale: The correct action for the nurse to take in this scenario is to record the findings on the flow sheet. The newborn's axillary temperature, heart rate, and respiratory rate are within normal limits for a 3-hour-old newborn. Therefore, there is no immediate need for intervention or further assessment. Swaddling the infant in a warm blanket, placing a pulse oximeter on the heel, or checking the vital signs in 15 minutes are not necessary actions based on the normal assessment findings presented. These actions could potentially disrupt the newborn or lead to unnecessary interventions when the baby is stable.

3. A client collapses while showering and is found by the nurse while making rounds. The client is not breathing and does not have a palpable pulse. The nurse obtains the Automated External Defibrillator (AED). What action should the nurse implement next?

Correct answer: B

Rationale: Applying the AED pads is the immediate next step after obtaining the AED in a cardiac arrest situation. Placing the pads correctly on the client's chest is crucial for the AED to analyze the heart rhythm accurately and deliver a shock if needed. Following the prompts of the AED comes after the pads are in place. Wiping the client's chest dry or moving the client from the bathroom are not priorities at this critical moment and may delay life-saving interventions.

4. The nurse is teaching a class on child care to new parents. Which instruction should be included about the prevention of rotavirus infection in infants who are starting to eat foods?

Correct answer: D

Rationale: The correct answer is D: Wash hands before any food preparation. Rotavirus is a highly contagious virus that can be prevented by maintaining proper hygiene. Washing hands before handling food can help prevent the spread of infections, including rotavirus. Choices A, B, and C are incorrect because while they are good practices for general hygiene and infant care, they are not specifically targeted at preventing rotavirus infection.

5. Based on the information provided in this client’s medical record during labor, which intervention should the nurse implement?

Correct answer: C

Rationale: Turning the client to the right lateral position is essential as it can improve fetal oxygenation and uterine blood flow, promoting better labor outcomes. This intervention helps relieve pressure on blood vessels, enhancing blood flow to the placenta and improving oxygen supply to the fetus. Applying oxygen at a specific rate may not address the underlying issue of compromised blood flow and oxygenation. Stopping the oxytocin infusion is not the priority unless medically indicated as it can affect labor progression. While monitoring the progress of labor is important, actively addressing the compromised fetal oxygenation and uterine blood flow by changing the client's position takes precedence in this scenario.

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