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 D
Explanation
Choice A rationale
Blue coloring of the hands and feet in an 8-hour-old newborn (acrocyanosis) is a common, benign finding as the newborn’s circulatory system adjusts post-birth. It does not require immediate intervention.
Choice B rationale
Small raised pearly spots on the nose (milia) are harmless and common in newborns. They do not necessitate any intervention.
Choice C rationale
An apical heart rate of 140 bpm is within the normal range for newborns and does not require intervention.
Choice D rationale
Nasal flaring and grunting are signs of respiratory distress in a newborn. This condition demands immediate intervention to ensure the newborn’s airway is clear and breathing is adequately supported.
Correct Answer is C
Explanation
Choice A rationale
G4T1 P1 A1 L2 implies the client has been pregnant 4 times, with 1 term birth, 1 preterm birth, 1 abortion, and 2 living children. This does not include the correct number of
pregnancies or abortions for this client.
Choice B rationale
G5T2 P0 A2 L2 indicates 5 pregnancies, 2 term births, no preterm births, 2 abortions, and 2 living children. This does not correctly account for the preterm birth and abortion history
provided.
Choice C rationale
G5T1 P1 A2 L2 is the correct answer, as it denotes 5 pregnancies (including the current one), 1 term birth, 1 preterm birth, 2 abortions, and 2 living children, aligning with the client's
history.
Choice D rationale
G5T1 P1 A1 L3 indicates 5 pregnancies, 1 term birth, 1 preterm birth, 1 abortion, and 3 living children. The client has only 2 living children, so this is incorrect.