Nokea
In normal neonates:
- A. Extracellular fluid volume exceeds intracellular fluid volume
- B. In a term baby, plasma calcium levels exceed that of the mother
- C. Clamping the umbilical cord after cessation of cord pulsations increases the blood volume by 20% in the baby
- D. There are two arteries and one vein in the umbilical cord
Correct Answer: A
Rationale: In neonates, extracellular fluid volume is greater than intracellular fluid volume, reflecting the transition from intrauterine to extrauterine life.
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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.
All of the following reduces intensity of first heart sound (S1) except
- A. Mechanical ventilation
- B. Calcific mitral stenosis
- C. Short PR interval
- D. LV dysfunction
Correct Answer: B
Rationale: Calcific mitral stenosis typically increases the intensity of the first heart sound (S1).
A father asks why his child with tetralogy of Fallot seems to favor a squatting position. What is the nurse's best response?
- A. Squatting increases the return of venous blood back to the heart.
- B. Squatting decreases arterial blood flow away from the heart.
- C. Squatting is a common resting position when a child is tachycardic.
- D. Squatting increases the workload of the heart.
Correct Answer: A
Rationale: The squatting position allows the child to breathe more easily because systemic venous return is increased.
Epiphyseal changes are seen in:
- A. Non-accidental injury
- B. Rickets
- C. Chronic renal failure
- D. Lead poisoning
Correct Answer: B
Rationale: Rickets is characterized by epiphyseal changes due to defective mineralization of growing bones.
In neonates with anomalous total pulmonary venous return and obstruction, the chest x-ray demonstrates
- A. heart enlarged
- B. prominent pulmonary artery
- C. prominent right ventricle
- D. prominent subaortic stenosis
Correct Answer: D
Rationale: Prominent subaortic stenosis is not typically seen in TAPVR.