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. When gathering subjective data from a client, what intervention should the nurse implement first?
- A. Listen attentively
- B. Establish rapport
- C. List problems
- D. Clarify inferences
Correct answer: B
Rationale: Establishing rapport is the initial step the nurse should take when gathering subjective data from a client. Building trust and a good relationship with the client creates an environment where the client feels comfortable sharing accurate and honest information. Listening attentively is important but should come after rapport is established to enhance active listening. Listing problems and clarifying inferences are actions that occur later in the assessment process, after the nurse has established a good rapport and obtained a comprehensive understanding of the client's perspective. Therefore, option B is the correct answer.
3. After witnessing a preoperative client sign the surgical consent form, what are the legal implications of the nurse's signature on the client's form as a witness?
- A. The client voluntarily grants permission for the procedure to be done
- B. The surgeon has explained to the client why the surgery is necessary
- C. The client is competent to sign the consent without impairment of judgment
- D. The client understands the risks and benefits associated with the procedure
Correct answer: C
Rationale: The nurse's signature on the consent form signifies that the client is competent to sign the consent without impairment of judgment. This legal implication ensures that the client possesses the necessary capacity to make decisions about their healthcare. Choice A is incorrect because the nurse's signature does not imply the client's voluntary permission for the procedure. Choice B is incorrect as it pertains to the surgeon's responsibility, not the nurse's. Choice D is incorrect as the nurse's signature does not confirm the client's understanding of the risks and benefits associated with the procedure.
4. After implementing a new fall prevention protocol on the nursing unit, which action by the nurse-manager best evaluates the protocol’s effectiveness?
- A. Compare the number of falls that occurred before and after protocol implementation
- B. Analyze data that reflects the unit’s costs incurred due to the new protocol
- C. Conduct a chart review on the unit to determine the number of clients at risk for falling
- D. Consult with the physical therapist to evaluate the benefits of the new fall protocol
Correct answer: A
Rationale: The best way to evaluate the effectiveness of a new fall prevention protocol is by comparing the number of falls that occurred before and after its implementation. This direct comparison helps in assessing the impact of the protocol on reducing fall rates. Choices B, C, and D do not directly measure the effectiveness of the protocol. Analyzing costs incurred (Choice B), conducting a chart review (Choice C), or consulting with a physical therapist (Choice D) may provide valuable information but do not specifically evaluate the protocol's effectiveness in preventing falls.
5. The healthcare provider prescribes lidocaine (Lidoject-1) 100 mg IV push for ventricular tachycardia for an unconscious client. What is the nurse's priority intervention?
- A. Measure the client's cardiac output
- B. Assess neurological status q15 min
- C. Collect a blood specimen for serum potassium
- D. Infuse lidocaine (Lidoject-1) at 20 to 50 mg/min
Correct answer: B
Rationale: The priority intervention for the nurse is to assess the client's neurological status q15 min. This is crucial to monitor for potential side effects of lidocaine, especially its neurotoxic effects. While measuring the client's cardiac output and collecting a blood specimen for serum potassium are important assessments, assessing the neurological status is the priority when administering lidocaine. Infusing lidocaine at a specific rate should follow the initial assessment of the client's neurological status to ensure safety.
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