CAT Exam Practice Test

HESI LPN

1. While changing a client’s chest tube dressing, the nurse notes a crackling sensation when gentle pressure is applied to the skin at the insertion site. What is the best action for the nurse to take?

A. Apply a pressure dressing around the chest tube insertion site
B. Assess the client for allergies to topical cleaning agents
C. Measure the area of swelling and crackling
D. Administer an oral antihistamine per PRN protocol

Correct answer: A

Rationale: A crackling sensation indicates subcutaneous emphysema, caused by air trapped under the skin. Applying a pressure dressing around the chest tube insertion site can help manage the issue by preventing further air leakage into the tissues. Choice B is incorrect because the crackling sensation is not related to allergies. Choice C is incorrect as measuring the area does not address the underlying cause. Choice D is incorrect as administering an oral antihistamine is not indicated for subcutaneous emphysema.

2. A client with eczema is experiencing severe pruritus. Which PRN prescription should the nurse administer?

A. Topical corticosteroid
B. Topical scabicide
C. Topical alcohol rub
D. Transdermal analgesic

Correct answer: A

Rationale: The correct answer is A: Topical corticosteroid. Topical corticosteroids are commonly used to manage itching in eczema by reducing inflammation and suppressing the immune response. In this case, for severe pruritus in eczema, a topical corticosteroid would be appropriate. Choice B, Topical scabicide, is used to treat scabies, not eczema. Choice C, Topical alcohol rub, is not typically used to manage pruritus in eczema. Choice D, Transdermal analgesic, is more for pain relief and not specifically targeted at managing itching associated with eczema.

3. When caring for a laboring client whose contractions are occurring every 2 to 3 minutes, the nurse should document that the pump is infusing how many ml/hour? (Enter numeric value only. If rounding is required, round to the nearest whole number. Click on each chart tab for additional information. Please be sure to scroll to the bottom right corner of each tab to view all information contained in the client’s medical record.)

A. 42
B. 38
C. 48
D. 50

Correct answer: A

Rationale: By calculating the infusion rate based on the given chart information, the correct value is 42 ml/hr. This rate ensures proper fluid administration to the laboring client. Choices B (38), C (48), and D (50) are incorrect as they do not align with the calculated infusion rate needed for the client's condition, as per the chart data provided.

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?

A. Keep house pets away from the food preparation area
B. Avoid feeding infants fresh fruits
C. Use only lactose-free formulas
D. Wash hands before any food preparation

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. An infant is receiving penicillin G procaine 220,000 units IM. The drug is supplied as 600,000 units/ml. How many ml should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth)

A. 0.4
B.
C.
D.

Correct answer: A

Rationale: To calculate the volume to administer, use the formula: Desired dose (220,000 units) / Dose on hand (600,000 units) x Volume of the available dose (1 ml). This results in 0.4 ml to be administered. Choice A is correct. Choice B, C, and D are incorrect as they are not provided.