During preconception counseling, the nurse explains that during the first 8 weeks the fetus is most vulnerable to the effects of teratogens.
What is occurring during the first 8 weeks of gestation?
Placenta formation.
Fertilization.
Organogenesis.
Implantation.
The Correct Answer is C
Choice A rationale
Placenta formation begins shortly after implantation, but it continues to develop throughout the first trimester and into the early second trimester, making it less precise to attribute the
first 8 weeks solely to this process.
Choice B rationale
Fertilization occurs within the first week after ovulation, marking the beginning of pregnancy, but it is a singular event that happens prior to the developmental processes vulnerable to teratogens.
Choice C rationale
Organogenesis is the critical period during which the major organs and structures of the fetus form, typically occurring between the third and eighth weeks of gestation. This is the
time when the fetus is most susceptible to the effects of teratogens, which can cause congenital anomalies.
Choice D rationale
Implantation occurs approximately 6-10 days after fertilization, embedding the blastocyst into the uterine lining. While crucial, it is not the primary period when teratogenic effects are
most significant, as this happens during organogenesis.
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Correct Answer is A
Explanation
Choice A rationale
A boggy and displaced fundus typically indicates bladder distention. Assisting the client to void can help relieve bladder distention, allowing the uterus to contract properly and
reducing the risk of postpartum hemorrhage.
Choice B rationale
Asking the client to rate her pain is important, but it does not address the immediate issue of a boggy, displaced fundus, which suggests bladder distention.
Choice C rationale
Encouraging the client to move to the left lateral position might help with blood flow and comfort but does not resolve the issue of a boggy fundus due to bladder distention.
Choice D rationale
Kegel exercises strengthen pelvic floor muscles but do not address the immediate concern of a boggy, displaced fundus caused by bladder distention.
Correct Answer is B
Explanation
Choice A rationale
Hyperbilirubinemia presents with jaundice (yellowing of the skin and eyes) and is caused by excess bilirubin in the blood. It doesn't typically involve a high-pitched cry, increased
muscle tone, or projectile vomiting.
Choice B rationale
Neonatal abstinence syndrome occurs in newborns exposed to addictive opiate drugs while in the mother’s womb. Symptoms include high-pitched crying, increased muscle tone,
yawning, poor feeding with vomiting, and tachypnea due to drug withdrawal.
Choice C rationale
Respiratory distress syndrome is primarily characterized by breathing difficulties, including rapid, shallow breathing and a grunting sound. Symptoms do not typically include high-
pitched cry or projectile vomiting.
Choice D rationale
Necrotizing enterocolitis involves severe inflammation and necrosis of the intestines. Symptoms include abdominal distension, vomiting bile, bloody stools, and apnea but not a high-
pitched cry or increased muscle tone.