Nokea
The nurse clarifies that a fetus has enough surfactant to breathe on its own at the age of weeks.
Correct Answer: 34
Rationale: Surfactant begins to appear at the age of 24 weeks and is adequate to support life at the age of 34 weeks.
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The mother of a postterm infant asks the nurse why the infant is being watched so closely. What is the nurse's most appropriate response?
- A. The placenta does not function adequately as it ages.'
- B. Infants born postmaturely are generally large.'
- C. Delivery of the postterm infant is more difficult.'
- D. There is less amniotic fluid.'
Correct Answer: A
Rationale: Fetal distress may occur in the postterm infant because placental functioning becomes inadequate with maturity.
What deficiency causes a preterm infant respiratory distress syndrome?
- A. Protein
- B. Estrogen
- C. Hyaline
- D. Surfactant
Correct Answer: D
Rationale: The production of surfactant, necessary for the absorption of oxygen by the lungs, is deficient in the preterm infant.
The nurse is caring for a woman who gave birth to a preterm infant. The nurse is aware that what are possible causes of preterm delivery? (Select all that apply.)
- A. Placenta previa
- B. Gestational diabetes
- C. Pregnancy-induced hypertension
- D. Hyperemesis gravidarum
- E. Chloasma
Correct Answer: A,B,C
Rationale: The predisposing causes of preterm birth are numerous; in many instances, the cause is unknown. Prematurity may be caused by multiple births, illness of the mother (e.g., malnutrition, heart disease, diabetes mellitus, or infectious conditions), or the hazards of pregnancy itself, such as gestational hypertension, placental abnormalities that may result in premature rupture of the membranes, placenta previa, and premature separation of the placenta.
The nurse is caring for an infant born at 42 weeks. What would the physical assessment reveal?
- A. Dry, peeling skin
- B. Minimal hair on the head
- C. Short, rough nails
- D. Abundant lanugo on the body
Correct Answer: A
Rationale: Loss of vernix caseosa leaves the skin dry, causing peeling.
The nurse is assessing a preterm infant. To what does the infant's level of maturation refer?
- A. Actual time the fetus remained in the uterus
- B. Age on the Dubowitz scoring system
- C. Infant's weight as compared to the gestational age
- D. Ability of the organs to function outside of the uterus
Correct Answer: D
Rationale: Level of maturation refers to how well developed the infant is at birth and the ability of the organs to function outside of the uterus.