Nokea
Which of the following situations increase the risk of lead poisoning in children?
- A. playing in the park with heavy traffic and with many vehicles passing by
- B. playing sand in the park
- C. playing plastic balls with other children
- D. playing with stuffed toys at home
Correct Answer: B
Rationale: Playing in sand at the park can increase the risk of lead poisoning in children because sand can be contaminated with lead particles from various sources such as old paint, industrial pollution, or leaded gasoline residues. When children play in sand, they may accidentally ingest the contaminated particles while handling or playing with the sand. This ingestion can lead to lead poisoning, as even small amounts of lead can be harmful to children's health. Therefore, playing in sand at the park poses a higher risk of lead exposure compared to the other activities listed.
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A 4-year-old weighing 15 kg produces 150 mL of urine in 10 hours. What should the nurse do?
- A. Notify the physician; urine output is too low.
- B. Encourage increased oral intake.
- C. Record the urine output in the chart.
- D. Administer IV fluids to rehydrate.
Correct Answer: C
Rationale: Expected urine output is 0.5-1 mL/kg/hr. For a 15-kg child over 10 hours, 75-150 mL is within normal limits.
A 39 y.o. homemaker sees her physician after she falls twice for seemingly no reason. Diagnostic tests are done, and she is diagnosed with multiple sclerosis. Which of the ff. explanations will help her understand her disease?
- A. "You have a build-up of myelin in your nervous system, causing congestion and muscle weakness."
- B. "You are missing a neurotransmitter that is important to muscle contraction."
- C. "The receptor sites on your muscles are damaged, so they can't contract correctly."
- D. "The insulation on your nerve cells is damaged, which slows the impulses to the muscles."
Correct Answer: D
Rationale: Option D, "The insulation on your nerve cells is damaged, which slows the impulses to the muscles," is the most accurate explanation for multiple sclerosis. Multiple sclerosis is a chronic autoimmune disorder where the body's immune system mistakenly attacks the myelin sheath, the protective covering of nerve fibers in the central nervous system. This damage disrupts the normal flow of electrical impulses along the nerves, leading to various symptoms such as muscle weakness, coordination problems, and balance issues. By understanding that the insulation on her nerve cells is damaged, the patient can better comprehend why she is experiencing symptoms like muscle weakness and falls.
In embryonic period, all are true EXCEPT
- A. formation of ectoderm by 8 days
- B. formation of mesoderm by 10 weeks
- C. formation of endoderm by 3 cm crown-rump length
- D. formation of human embryo is about 6 weeks
Correct Answer: D
Rationale: The formation of the human embryo is completed by 8 weeks, not 6 weeks.
In embryonic period, all are true EXCEPT
- A. formation of ectoderm by 8 days
- B. formation of mesoderm by 10 weeks
- C. formation of endoderm by 3 cm crown-rump length
- D. formation of human embryo is about 6 weeks
Correct Answer: D
Rationale: The formation of the human embryo is completed by 8 weeks, not 6 weeks.
Biopsy is not usually performed for a child with suspicion of Wilms tumor EXCEPT
- A. age of 2-3 year
- B. signs of inflammation or infection
- C. significant lymph node enlargement radiologically
- D. intratumoral calcification radiologically
Correct Answer: E
Rationale: Presence of intratumoral calcifications may warrant biopsy to rule out other diagnoses.