HESI LPN
CAT Exam Practice Test
1. Identify the placement of the stapes footplate into the bony labyrinth.
- A. Fenestra vestibuli
- B. Fenestra cochleae
- C. Tympanic membrane
- D. Round window
Correct answer: A
Rationale: The correct answer is A: Fenestra vestibuli. The stapes footplate is placed into the fenestra vestibuli of the bony labyrinth. This structure is also known as the oval window and is located at the junction of the middle ear and inner ear. Choice B, Fenestra cochleae, is incorrect as this opening is also known as the round window and is located near the base of the cochlea. Choice C, Tympanic membrane, is incorrect as it is also known as the eardrum and separates the external ear from the middle ear. Choice D, Round window, is incorrect as it is the opening covered by the secondary tympanic membrane and is important for the dissipation of sound waves in the cochlea.
2. Prior to surgery, written consent must be obtained. What is the nurse’s legal responsibility with regard to obtaining written consent?
- A. Validate the client's understanding of the surgical procedure to be conducted
- B. Explain the surgical procedure to the client and ensure the client comprehends before signing the consent form
- C. Ensure the client, not a family member, signs the surgical consent form
- D. Confirm that the surgical consent form is signed and included in the client's record
Correct answer: A
Rationale: The nurse's legal responsibility in obtaining written consent is to validate the client's understanding of the surgical procedure to be conducted. This process ensures that the client has been comprehensively informed about the procedure, including its risks, benefits, and alternatives. Choice B is incorrect because it does not emphasize the validation of client understanding, which is crucial for informed consent. Choice C is incorrect as the client, not a family member, should provide consent unless specific circumstances dictate otherwise. Choice D is incorrect because although ensuring the consent form is signed and filed is important, it does not address the primary responsibility of confirming the client's comprehension and ensuring informed consent.
3. Which assessment finding is most indicative of deep vein thrombosis (DVT) in a client’s right leg?
- A. Dorsiflexes the right foot and left foot on command
- B. A 3 by 5 cm ecchymosis area on the right calf
- C. Right calf is 3 cm larger in circumference than the left calf
- D. Bilateral lower extremities have 3+ pitting edema
Correct answer: C
Rationale: The correct answer is C because a significant difference in calf circumference between the legs is a classic sign of DVT. This is due to the obstruction of blood flow in the deep veins of the leg, leading to swelling in the affected limb. Choices A, B, and D are not typical findings of DVT. Choice A describes a neurological response, choice B indicates a bruise on the right calf, and choice D describes pitting edema in both lower extremities, which are not specific signs of DVT.
4. A client receiving chemotherapy has severe neutropenia. Which snack is best for the nurse to recommend to the client?
- A. Plain yogurt sweetened with raw honey
- B. Peanuts in the shell, roasted or unroasted
- C. Aged farmer’s cheese with celery sticks
- D. Baked apples topped with dried raisins
Correct answer: A
Rationale: The correct answer is A: Plain yogurt sweetened with raw honey. This option is the best choice for a client with severe neutropenia undergoing chemotherapy because it is less likely to harbor harmful bacteria, which could cause infections due to the weakened immune system. Peanuts in the shell (choice B) may carry a risk of contamination, while aged farmer's cheese with celery sticks (choice C) and baked apples topped with dried raisins (choice D) may not be as safe as plain yogurt for a client with severe neutropenia.
5. The nurse is assessing an older adult with type 2 diabetes. Which assessment finding indicates that the client understands long-term control of diabetes?
- A. The fasting blood sugar was 120 mg/dL this morning
- B. Urine ketones have been negative for the past 6 months
- C. The hemoglobin A1C was 6.5% last week
- D. No diabetic ketoacidosis has occurred in 6 months
Correct answer: C
Rationale: An A1C level of 6.5% indicates good long-term control of diabetes as it reflects the average blood sugar levels over the past 2-3 months. Monitoring fasting blood sugar provides immediate information about the current blood sugar level, while the absence of urine ketones indicates short-term control. Although the absence of diabetic ketoacidosis is positive, it doesn't specifically reflect long-term control like the A1C level does.
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