A nurse is caring for a newborn who is small for gestational age. Which of the following findings is associated with this condition?

Choice A rationale: The gender of the fetus is not determined through amniocentesis. Fetal gender determination can be achieved through ultrasound or other specialized genetic tests if needed.
Choice B rationale: While amniocentesis can provide information about certain chromosomal abnormalities and genetic conditions, it is not the primary procedure used to detect anatomic abnormalities. Detailed ultrasound and other specialized imaging techniques are used for this purpose.
Choice C rationale: Amniocentesis is a prenatal diagnostic procedure in which a small amount of amniotic fluid is withdrawn from the uterus. The amniotic fluid contains fetal cells and biochemical substances that can provide valuable information about the fetus's health and development. One of the essential pieces of information obtained from amniocentesis is the maturity of the lungs. This is crucial in preterm labor to assess whether the lungs are mature enough to support breathing if the baby is born prematurely.
Choice D rationale: The gestational age is determined through other methods, such as ultrasound measurements and the last menstrual period. Amniocentesis is not primarily used to determine the weeks of gestation.

Choice A rationale: The Mongolian spot is a bluish-gray birthmark that is often seen on the lower back or buttocks of newborns with darker skin tones. It is not related to the swelling described in the scenario.
Choice B rationale: Caput succedaneum is a common condition in newborns delivered by vacuum extraction. It is characterized by swelling of the soft tissues of the scalp that crosses the suture lines. The swelling occurs due to pressure from the vacuum extractor during delivery and is caused by fluid accumulation between the scalp and the skull. Caput succedaneum is typically a benign and self-resolving condition that does not require treatment.
Choice C rationale: Cephalhematoma is a collection of blood between the periosteum and the skull bone. Unlike caput succedaneum, it does not cross the suture lines and can take weeks to months to resolve.
Choice D rationale: Erythema toxicum is a common skin rash in newborns characterized by red or pink spots with a yellow or white bump in the center. It is not related to the swelling described in the scenario.