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","B","C","D","E"]
Explanation
Choice A rationale
Postpartum blues typically resolve within the first two weeks postpartum and involve mild symptoms like mood swings and irritability. In contrast, postpartum depression can persist
longer and requires treatment.
Choice B rationale
Symptoms of postpartum blues usually disappear without medical intervention, whereas postpartum depression often needs professional treatment to manage the more severe and
persistent symptoms.
Choice C rationale
Postpartum depression can impair a mother's ability to care for herself and her baby safely, requiring intervention to prevent harm. Postpartum blues do not typically cause such severe
functional impairment.
Choice D rationale
Postpartum depression may require antidepressants for treatment due to its severity. Postpartum blues generally do not necessitate such interventions and are managed through
support and reassurance.
Choice E rationale
Postpartum depression can occur at any time within the first 12 months after delivery, while postpartum blues are usually confined to the initial two weeks postpartum.
Correct Answer is B
Explanation
Choice A rationale
Umbilical cord compression typically results in variable decelerations in the fetal heart rate, not moderate variability or regular accelerations. It can lead to changes in fetal heart rate
patterns, but not regular mild contractions.
Choice B rationale
Dysfunctional labor refers to an abnormal labor pattern, including irregular uterine contractions. The described symptoms fit this condition, as they can cause mild pain and be
managed by ambulation, showers, and rest.
Choice C rationale
Chorioamnionitis is an infection of the fetal membranes and amniotic fluid, leading to fever, uterine tenderness, and foul-smelling amniotic fluid, not mild contractions and moderate
variability in FHR.
Choice D rationale
Iron deficiency anemia in pregnancy can cause fatigue, pallor, and shortness of breath but does not affect uterine contractions or fetal heart rate.