Nokea
A client has undergone the Snellen eye chart test and has 20/40 vision. Which of the ff is true for this client?
- A. The client sees letters at 20 feet that others can read at 40 feet
- B. The client sees letters at 40 feet that others can read at 20 feet
- C. The client sees colors at 20 feet that others can see at 40 feet
- D. The client sees colors at 40 feet that others can see at 20 feet
Correct Answer: A
Rationale: In the Snellen eye chart test, the first number (20) represents the distance at which the client is standing from the chart, while the second number (40) represents the distance at which a person with normal vision can read the same line on the chart. A person with 20/40 vision can see letters at 20 feet that a person with normal vision can see at 40 feet. This means that the client's vision is below the standard for normal vision, indicating that they may need corrective lenses to improve their visual acuity.
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Correct Answer: A
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In embryonic period, formation of all of the following occur by the given time EXCEPT
- A. 8 days - blastocyst formation
- B. 6 weeks - ectoderm formation
- C. 8 weeks - crown-rump length about 3 cm
- D. 10 weeks - endoderm formation
Correct Answer: D
Rationale: Endoderm formation occurs much earlier than 10 weeks in the embryonic period.
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- A. medulloblastoma
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- C. ependymoma
- D. malignant glioma
Correct Answer: A
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- A. chemotherapy
- B. radiotherapy
- C. concomitant chemo-radiotherapy
- D. chemotherapy followed by radiotherapy
Correct Answer: A
Rationale: Complete resection with microscopic residual disease typically warrants adjuvant chemotherapy.
Nurse Veronica is teaching a group of parents about otitis media. When discussing why children are predisposed to this disorder, the nurse should mention the significance of which anatomical feature?
- A. Nasopharynx
- B. Eustachian tubes
- C. External ear canal
- D. Tympanic membrane 51
Correct Answer: B
Rationale: The Eustachian tubes are small passages that connect the middle ear to the back of the throat. In young children, these tubes are shorter, more horizontal, and more narrow than in adults, making them more prone to blockages and infections. When these tubes become blocked, usually due to factors like swelling from allergies or a cold, fluid can build up in the middle ear leading to otitis media or middle ear infection. Therefore, the anatomy and size of the Eustachian tubes play a significant role in the predisposition of children to otitis media.