Nokea
What is the most common cause of amblyopia?
- A. Strabismus
- B. Cataracts
- C. Astigmatism
- D. Glaucoma
Correct Answer: A
Rationale: Strabismus, or misalignment of the eyes, is the leading cause of amblyopia in children.
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Mrs. Williams asks what “presbyopia†means. The best response would be that Mrs. Williams
- A. is 'farsighted' and can see well at a distance, but her near vision is poor
- B. is 'nearsighted' and can see well when objects are close but cannot see well at a distance
- C. has distorted vision which is caused by a curvature in the eye
- D. has difficulty seeing objects that are very close because her lens is less elastic
Correct Answer: D
Rationale: Presbyopia results from decreased elasticity of the eye's lens, impairing the ability to focus on nearby objects, typically occurring with age.
Why is it important for a nurse to move a victim of a common respiratory toxin to higher ground immediately?
- A. The toxins flow to the lower ground.
- B. The toxic vapors stay close to the ground.
- C. The toxins are always released close to the ground.
- D. The heavy and the solid toxins cannot move to a height.
Correct Answer: B
Rationale: The correct answer is B because many respiratory toxins are heavier than air and settle near the ground.
Mrs. Dailey tells the nurse that she uses eyedrops which make her pupils get small. Which of the following drugs would produce this effect?
- A. Epinephrine (Adrenalin)
- B. Acetazolamide (Diamox)
- C. Atropine
- D. Pilocarpine
Correct Answer: D
Rationale: Pilocarpine is a miotic agent that constricts the pupil, commonly used in treating glaucoma by improving aqueous humor outflow.
For care of a patient who has oral cancer, which task would be appropriate to delegate to the LPN/LVN?
- A. Assist the patient to brush and floss.
- B. Give antacids and sucralfate suspension as ordered.
- C. Recommend saliva substitutes.
- D. Explain when brushing and flossing are contraindicated.
Correct Answer: A
Rationale: Assisting with oral hygiene is within the scope of practice for LPNs/LVNs, while medication administration and patient education require higher-level training.
For a patient with osteogenic sarcoma, you would be particularly vigilant for elevations in which laboratory value?
- A. Sodium.
- B. Calcium.
- C. Potassium.
- D. Hematocrit.
Correct Answer: B
Rationale: Elevated calcium levels are commonly associated with osteogenic sarcoma due to bone destruction and release of calcium into the bloodstream.