CAT Exam Practice Test

HESI LPN

1. A college student brings a dorm roommate to the campus clinic because the roommate has been talking to someone who is not present. The client tells the nurse that her voices are saying, “Kill, Kill.” What question should the nurse ask the client next?

A. When did these voices begin?
B. Are you planning to obey the voices?
C. Have you taken any hallucinogens?
D. Do you believe the voices are real?

Correct answer: B

Rationale: Assessing whether the client has a plan to act on the voices is critical for evaluating the risk of harm. Asking if the client is planning to obey the voices helps determine the immediate safety concerns. While understanding when the voices began could provide insight into the situation, assessing the intent to act on them is more urgent. Asking about hallucinogen use may be relevant but does not address the immediate safety issue. Inquiring about the client's belief in the reality of the voices is important but does not address the immediate risk of harm.

2. A high school football player comes to the clinic complaining of severe acne. The mother reports recent behavior changes, including irritability and suspiciousness of friends. The nurse’s assessment reveals an elevated blood pressure. Which intervention should the nurse implement first?

A. Encourage the client to see a dermatologist
B. Refer the adolescent to a substance abuse program
C. Suggest a low-salt, low-fat, and caffeine-free diet
D. Inquire about a possible use of anabolic steroids

Correct answer: D

Rationale: In this scenario, the high school football player presenting with severe acne, behavior changes, elevated blood pressure, and suspicion of friends suggests the possible use of anabolic steroids. Anabolic steroid use can lead to such symptoms. Therefore, the nurse should first inquire about the possible use of anabolic steroids to address the root cause of the presenting issues. Encouraging the client to see a dermatologist (Choice A) may be necessary but addressing the underlying cause is crucial first. Referring the adolescent to a substance abuse program (Choice B) is premature without confirming steroid use. Suggesting a low-salt, low-fat, and caffeine-free diet (Choice C) is not the priority in this situation where a serious issue like anabolic steroid use needs immediate attention.

3. A client is admitted to the hospital with a serum sodium level of 128 mEq/L, distended neck veins, and lung crackles. What intervention should the nurse implement?

A. Increase the intake of salty foods
B. Administer NaCl supplements
C. Restrict oral fluid intake
D. Hold the client's loop diuretic

Correct answer: C

Rationale: In the scenario described, the client presents with signs of fluid overload and hyponatremia. Restricting oral fluid intake is the appropriate intervention to manage fluid overload and correct hyponatremia. Increasing the intake of salty foods (Choice A) and administering NaCl supplements (Choice B) would exacerbate the sodium imbalance. Holding the client's loop diuretic (Choice D) is not directly related to addressing the fluid overload and hyponatremia.

4. 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?

A. 18
B. 27
C. 36
D. 45

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.

5. While caring for a client with bilateral chest tubes, the bubbling in the water-seal chamber of the right chest tube stops. What action is most important for the nurse to take?

A. Check the chest tube connections to the water-seal container
B. Replace the water-seal collection container
C. Increase the amount of wall suction connected to the right chest tube
D. Milk the tubing connected to the right chest tube

Correct answer: A

Rationale: The most important action for the nurse to take when the bubbling in the water-seal chamber of the right chest tube stops is to check the chest tube connections to the water-seal container. This is crucial to ensure there are no disconnections or leaks affecting the bubbling. Replacing the water-seal collection container (choice B) is not necessary unless there is a malfunction; increasing suction (choice C) without assessing the connections can be harmful, and 'milking' the tubing (choice D) is an inappropriate action that can cause damage to the system.