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. The nurse enters the room of a client who is awaiting surgery for appendicitis. The unlicensed assistive personnel (UAP) has helped the client to a position of comfort with the right leg flexed and has applied a heating pad to the client’s abdomen to relieve the client’s pain. Which action should the nurse implement first?
- A. Remove the heating pad.
- B. Reposition the client’s right leg.
- C. Monitor for signs of inflammation.
- D. Assess the client’s pain level.
Correct answer: A
Rationale: The correct action for the nurse to implement first is to remove the heating pad. Heating pads should not be used for suspected appendicitis as they can mask symptoms and potentially worsen inflammation. Choice B is not the priority as the position of comfort chosen by the UAP may be appropriate. Monitoring for signs of inflammation (Choice C) is important but not the initial action to address the immediate issue of the heating pad. Assessing the client's pain level (Choice D) can be done after removing the heating pad to evaluate the effectiveness of pain relief measures.
3. A client is admitted to the intensive care unit with diabetes insipidus due to a pituitary gland tumor. Which potential complication should the nurse monitor closely?
- A. Hypokalemia
- B. Ketonuria
- C. Peripheral edema
- D. Elevated blood pressure
Correct answer: A
Rationale: The correct answer is A: Hypokalemia. In diabetes insipidus, there is excessive urination leading to fluid loss, which can result in electrolyte imbalances such as hypokalemia. Monitoring potassium levels is crucial to prevent complications like cardiac arrhythmias. Choices B, C, and D are incorrect. Ketonuria is typically seen in diabetic ketoacidosis, peripheral edema is more commonly associated with conditions like heart failure or kidney disease, and elevated blood pressure is not a direct complication of diabetes insipidus related to a pituitary gland tumor.
4. The charge nurse is making assignments for clients on an endocrine unit. Which client is best to assign to a new graduate nurse?
- A. A female adult with hyperthyroidism who is returning to the unit after a thyroidectomy
- B. A male adult with Cushing's syndrome who reports a headache and visual disturbances
- C. An older man with Addison's disease who is diaphoretic and has hand tremors
- D. A perimenopausal woman with Graves' disease who is nervous and has exophthalmos
Correct answer: A
Rationale: A new graduate nurse can manage the care of a stable client returning from a thyroidectomy. Choice B is not suitable for a new graduate nurse as it involves complex symptoms of Cushing's syndrome that require more experience and knowledge. Choice C presents a client with acute manifestations of Addison's disease, which may be challenging for a new graduate nurse. Choice D involves a client with Graves' disease experiencing nervousness and exophthalmos, which also require a higher level of expertise to manage effectively.
5. A 60-year-old male with type 2 diabetes mellitus tells the nurse that he is going to join a gym and start working out. Which information is most important for the nurse to obtain?
- A. Recent serum cholesterol levels
- B. Presence of calf pain during exercise
- C. Average weight gain or loss in the last year
- D. Exercise tolerance test with EKG results
Correct answer: B
Rationale: The most important information for the nurse to obtain in this scenario is the presence of calf pain during exercise. Calf pain during exercise could indicate peripheral vascular issues, such as peripheral artery disease, which is crucial to address before starting an exercise program. High cholesterol levels (choice A) may be important but are not as immediately relevant as assessing for peripheral vascular issues. Average weight gain or loss (choice C) may provide some insight into the patient's overall health status but is not as critical as assessing for potential vascular complications. An exercise tolerance test with EKG results (choice D) may be valuable in assessing cardiovascular fitness but is not as crucial as evaluating for peripheral vascular issues given the patient's symptoms.
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