Nokea
In embryology:
- A. Most defects occur with teratogens in the first 2 weeks post-conception
- B. The urachus becomes the median umbilical ligament
- C. The mesonephric duct becomes the male organs
- D. The thyroid develops from the floor of the primitive larynx
Correct Answer: B
Rationale: The urachus becomes the median umbilical ligament. Most defects occur after the first 2 weeks, and the thyroid develops from the floor of the pharynx.
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A child with rheumatic fever begins involuntary, purposeless movements of her limbs. What does the nurse recognize that this indicates?
- A. Seizure activity
- B. Hypoxia
- C. Sydenham’s chorea
- D. Decreasing level of consciousness
Correct Answer: C
Rationale: As the effects of rheumatic fever affect the central nervous system, the child may develop Sydenham’s chorea, manifested by involuntary, purposeless movements of the limbs.
A health care provider has prescribed oxygen as needed for an infant with heart failure. In which situation should the nurse administer the oxygen?
- A. During sleep
- B. When changing the infant’s diapers
- C. When the mother is holding the infant
- D. When drawing blood for electrolyte level testing
Correct Answer: A
Rationale: Administering oxygen during sleep can help ensure the infant maintains adequate oxygenation, especially since infants with heart failure may have compromised respiratory function.
The enzyme producing carbon monoxide within the human body is
- A. Aminolevulinic acid synthase
- B. Heme oxygenase
- C. Cyclo-oxygense
- D. Nitric oxide synthase
Correct Answer: B
Rationale: Heme oxygenase is responsible for the production of carbon monoxide during the breakdown of heme.
All of the following are minor criteria in the latest Revised Jones criteria for rheumatic fever in moderate-high risk population except
- A. Monoarthalgia
- B. Fever with body temperature ≥ 38.5°C
- C. ESR 230 mm/hour
- D. Prolonged PR interval
Correct Answer: C
Rationale: ESR 230 mm/hour is not a minor criterion in the Revised Jones criteria for rheumatic fever.
An older male client with long-standing lung disease is admitted to the medical unit for treatment of pulmonary infection. In assessing for signs of increasing hypoxia, which action should the nurse include? (select all that apply)
- A. Monitor dryness of mucous membranes
- B. Check for changes in mentation
- C. Observe color of skin and nailbeds
- D. Note appearance of jugular veins
Correct Answer: B
Rationale: Changes in mentation, skin color, and breathing patterns are key indicators of hypoxia in clients with lung disease.