Nokea
Which is the largest branch of the internal carotid artery?
- A. ophthalmic artery
- B. anterior cerebral artery
- C. middle cerebral artery
- D. striate artery
Correct Answer: C
Rationale: The middle cerebral artery is the largest branch of the internal carotid artery and supplies a significant portion of the cerebral cortex, including areas responsible for motor and sensory functions.
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Early in the care of the patient diagnosed with a right-sided brain stroke and disturbed visual sensory perception related to homonymous hemianopsia, what should the nurse do?
- A. Place objects on the right side within the patient's field of vision.
- B. Approach the patient from the left side to encourage the patient to turn the head.
- C. Place objects on the patient's left side to assess the patient's ability to compensate.
- D. Patch the affected eye to encourage the patient to turn the head to scan the environment.
Correct Answer: B
Rationale: Encouraging the patient to turn their head helps them become aware of their blind side
The following conditions are required for rhodopsin regeneration:
- A. NADPH
- B. darkness
- C. splitting of all trans-retinal from the opsin
- D. all above
Correct Answer: D
Rationale: Rhodopsin regeneration requires NADPH, darkness, and the separation of all-trans-retinal from opsin. These steps are essential for the visual cycle.
You are caring for a patient who is preoperative and is NPO. The patient takes carbamazepine (Tegretol), 200 mg PO BID for a seizure disorder. Which of the following actions should you take?
- A. Give the oral dose of carbamazepine with a sip of water.
- B. Give carbamazepine IV.
- C. Withhold the carbamazepine.
- D. Administer half the usual morning dose of carbamazepine.
Correct Answer: A
Rationale: It is important to continue the oral carbamazepine to maintain therapeutic blood levels and to prevent seizure activity. You should notify the anesthesiologist and should give the patient the carbamazepine with a sip of water. Carbamazepine is not available IV. Withholding the carbamazepine may reduce the therapeutic blood level and cause seizure activity. Administering a reduced dose of carbamazepine may reduce the therapeutic blood level and cause seizure activity.
Which action requires immediate intervention by the nurse for a nursing assistant caring for a patient with CTS?
- A. Arrange the patient's lunch tray and cut the meat.
- B. Provide warm water and assist the patient with a bath.
- C. Replace the patient's splint in hyperextension position.
- D. Remind the patient not to lift very heavy objects.
Correct Answer: C
Rationale: Replacing a splint in hyperextension without proper training could exacerbate the condition.
The nurse is participating in the preparation of a seminar on the neurologic system for a community health fair. Which part of the system is the nurse referring when the statement 'rest and digest' is included?
- A. Left hemisphere of the cerebral cortex
- B. Right hemisphere of the cerebral cortex
- C. Sympathetic division of the autonomic nervous system
- D. Parasympathetic division of the autonomic nervous system
Correct Answer: D
Rationale: The parasympathetic division of the autonomic nervous system is responsible for 'rest and digest' functions, such as digestion and relaxation. The sympathetic division mediates the 'fight-or-flight' response, while the cerebral hemispheres are involved in higher cognitive functions. Understanding the autonomic nervous system is key to explaining physiological responses.