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. A client with a peripherally inserted central catheter (PICC) line has a fever. What client assessment is most important for the nurse to perform?
- A. Observe the PICC line site for inflammation.
- B. Encourage increasing fluid intake.
- C. Monitor blood pressure regularly.
- D. Assess skin turgor for dehydration.
Correct answer: A
Rationale: The correct answer is to observe the PICC line site for inflammation. When a client with a PICC line develops a fever, it could indicate an infection related to the catheter. Assessing the PICC line site for signs of inflammation, such as redness, warmth, swelling, or drainage, is crucial in identifying a potential infection early. Choice B is incorrect because increasing fluid intake is not directly related to assessing a PICC line for infection. Choice C is not the most appropriate assessment in this situation as monitoring blood pressure may not directly help in identifying the cause of the fever. Choice D is unrelated to the assessment of a fever in a client with a PICC line.
3. Several clients on a telemetry unit are scheduled for discharge in the morning, but a telemetry-monitored bed is needed immediately. The charge nurse should make arrangements to transfer which client to another medical unit? The client who is
- A. Learning to self-administer insulin injections after being diagnosed with diabetes mellitus
- B. Ambulatory following coronary artery bypass graft surgery performed six days ago.
- C. Wearing a sling immobilizer following permanent pacemaker insertion earlier that day
- D. Experiencing syncopal episodes resulting from dehydration caused by severe diarrhea
Correct answer: B
Rationale: The correct answer is B because the client who is ambulatory following coronary artery bypass graft surgery performed six days ago is stable enough for transfer compared to the other clients. Choice A should not be transferred as the client is still in the learning phase of self-administering insulin injections after being diagnosed with diabetes mellitus, requiring close monitoring. Choice C should not be transferred immediately after having a permanent pacemaker insertion as they need telemetry monitoring for any complications. Choice D should not be transferred as the client is experiencing syncopal episodes due to dehydration caused by severe diarrhea, requiring immediate intervention and close monitoring on the telemetry unit.
4. The nurse has explained safety precautions and infant care to a primigravida mother and observes the mother as she gives care to her newborn during the first two days of rooming-in. Which action indicates the mother understands the instruction?
- A. Aspirates the newborn’s nares using a syringe
- B. Applies a dressing to the cord after the newborn’s bath
- C. Breastfeeds the infant every hour during the night
- D. Positions the infant supine in the crib to sleep
Correct answer: D
Rationale: Positioning the infant supine in the crib to sleep is the correct action that indicates the mother understands the instruction. This position is recommended to reduce the risk of Sudden Infant Death Syndrome (SIDS). Choice A is incorrect as it is not a routine or recommended practice to aspirate the newborn’s nares using a syringe without a specific medical indication. Choice B is incorrect because applying a dressing to the cord after the newborn's bath is not a standard care practice. Choice C is incorrect because breastfeeding every hour during the night is excessive and not a recommended feeding schedule for a newborn.
5. The nurse plans to collect a 24-hour urine specimen for a creatinine clearance test. Which instruction should the nurse provide to the adult male client?
- A. Urinate at the specified time, discard this urine, and collect all subsequent urine over the next 24 hours.
- B. Cleanse around the meatus, discard the first portion of voiding, and collect the rest in a sterile bottle.
- C. For the next 24 hours, notify the nurse when the bladder is full, and the nurse will collect catheterized specimens.
- D. Urinate immediately into a urinal, and the lab will collect the specimen every 6 hours for the next 24 hours.
Correct answer: A
Rationale: The correct instruction for the adult male client to follow when collecting a 24-hour urine specimen for a creatinine clearance test is to urinate at the specified time, discard this urine, and collect all subsequent urine over the next 24 hours. This method ensures proper collection for an accurate creatinine clearance measurement. Choice B is incorrect as it describes a different procedure for a clean-catch urine sample, not suitable for creatinine clearance. Choice C is incorrect as it suggests catheterization, which is not typically done for a creatinine clearance test, and it is not necessary for this procedure. Choice D is incorrect as it does not follow the standard procedure for a 24-hour urine collection for creatinine clearance; the urine should be collected continuously over 24 hours, not at specified intervals.
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