CAT Exam Practice Test

Questions 49

HESI LPN

HESI LPN Test Bank

CAT Exam Practice Test Questions

Question 1 of 5

The nurse is teaching a male adolescent recently diagnosed with type 1 diabetes mellitus (DM) about self-injecting insulin. Which approach is best for the nurse to use to evaluate the effectiveness of the teaching?

Correct Answer: C

Rationale: Reviewing the glycosylated hemoglobin level after a few months is the best approach to evaluate the effectiveness of teaching self-injection. This measurement provides an objective indicator of the adolescent's glucose control over time, reflecting the impact of insulin self-administration education. Choices A, B, and D do not directly assess the long-term impact of the teaching on the adolescent's diabetes management.

Question 2 of 5

When should the nurse conduct an Allen's test?

Correct Answer: C

Rationale: The correct time to conduct an Allen's test is just before arterial blood gases are drawn peripherally. This test is performed to assess the adequacy of collateral circulation in the hand before obtaining arterial blood gases. Choice A is incorrect because an Allen's test is not specifically done when obtaining pulmonary artery pressures. Choice B is incorrect because an Allen's test is not used to assess deep vein thrombosis. Choice D is incorrect because an Allen's test is not done specifically before attempting a cardiac output calculation.

Question 3 of 5

In Duchenne muscular dystrophy, if a child has a Gower sign, what behavior should the nurse expect the child to exhibit?

Correct Answer: A

Rationale: The Gower sign is a characteristic finding in Duchenne muscular dystrophy where a child uses hands to walk up the legs when standing from a sitting position due to proximal muscle weakness. This behavior is indicative of the child trying to compensate for weak hip and thigh muscles. Choices B, C, and D are incorrect because they do not describe the specific behavior associated with the Gower sign. Muscular atrophy, contractures of both hips, and an unsteady gait with foot slapping are not directly related to the Gower sign.

Question 4 of 5

The nurse is teaching a male adolescent recently diagnosed with type 1 diabetes mellitus (DM) about self-injecting insulin. Which approach is best for the nurse to use to evaluate the effectiveness of the teaching?

Correct Answer: C

Rationale: Reviewing the glycosylated hemoglobin level after a few months is the best approach to evaluate the effectiveness of teaching self-injection. This measurement provides an objective indicator of the adolescent's glucose control over time, reflecting the impact of insulin self-administration education. Choices A, B, and D do not directly assess the long-term impact of the teaching on the adolescent's diabetes management.

Question 5 of 5

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.

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