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.
Free Nursing Test Bank
- Free Pharmacology Quiz 1
- Free Medical-Surgical Quiz 2
- Free Fundamentals Quiz 3
- Free Maternal-Newborn Quiz 4
- Free Anatomy and Physiology Quiz 5
- Free Obstetrics and Pediatrics Quiz 6
- Free Fluid and Electrolytes Quiz 7
- Free Community Health Quiz 8
- Free Promoting Health across the Lifespan Quiz 9
- Free Multidimensional Care Quiz 10
View Related questions
Correct Answer is D
Explanation
Choice A rationale
External fetal monitors are non-invasive and do not pose a risk of transmitting HIV from mother to baby. They are considered safe for monitoring fetal well-being in an HIV-positive mother.
Choice B rationale
Administering antiviral medication is essential in reducing the risk of mother-to-child transmission of HIV. It's a standard care practice for managing HIV-positive pregnant women.
Choice C rationale
Preparing for a caesarean section may be recommended to reduce the risk of vertical transmission of HIV during delivery, especially if the viral load is high.
Choice D rationale
Internal fetal scalp electrodes are contraindicated because they can create a portal for HIV transmission from mother to baby through small abrasions or punctures on the fetal scalp.
Correct Answer is C
Explanation
Choice A rationale
Clapping hands to assess hearing is not a reliable method and could startle the baby for reasons unrelated to hearing ability.
Choice B rationale
While a newborn might respond to visual stimuli, this is not a definitive method to assess hearing.
Choice C rationale
Routine hearing screenings using objective tests are the best way to determine a newborn's hearing ability, providing accurate and early detection of potential hearing issues.
Choice D rationale
This statement is misleading, as some forms of hearing loss can be inherited. It's important to use accurate methods to assess newborn hearing.