A client expresses concern about teratogen exposure on fetal development.Which factor does the nurse emphasize as a priority related to the effects of teratogen exposure?
The mother’s size.
The timing and duration of exposure.
The type of teratogen.
The father’s health.
The Correct Answer is B
Choice A rationale
The mother’s size does not significantly impact the effects of teratogen exposure on fetal development. Teratogens are substances that cause congenital abnormalities in a developing fetus, and their impact is more related to the timing, duration, and type of exposure rather than the mother’s physical characteristics.
Choice B rationale
The timing and duration of exposure are critical factors in determining the effects of teratogen exposure. Teratogens can cause the most harm during specific periods of fetal development, particularly during the first trimester when organogenesis occurs. The duration of exposure also influences the severity of the effects, with prolonged exposure leading to more significant developmental issues.
Choice C rationale
The type of teratogen is also important, as different teratogens can cause different types of congenital abnormalities. For example, alcohol can lead to fetal alcohol syndrome, while certain medications can cause neural tube defects. However, the timing and duration of exposure are generally considered more critical factors.
Choice D rationale
The father’s health does not directly impact the effects of teratogen exposure on fetal development. Teratogens affect the fetus through the mother’s exposure to harmful substances during pregnancy.
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Correct Answer is D
Explanation
Choice A rationale
Having a child with blue eyes is not an indication for genetic testing. Eye color is a polygenic trait and does not typically warrant genetic testing.
Choice B rationale
Reactive airway disease in preterm children is not a direct indication for genetic testing. This condition is more related to the complications of prematurity rather than genetic factors.
Choice C rationale
Neonatal jaundice is common and usually resolves without long-term issues. It is not typically an indication for genetic testing unless there is a suspicion of an underlying genetic disorder.
Choice D rationale
Tay-Sachs Disease is a genetic disorder, and having a child with this condition is a strong indication for genetic testing. This would help determine the risk of recurrence in future pregnancies and provide valuable information for family planning. .
Correct Answer is D
Explanation
Choice A rationale
Striae gravidarum, or stretch marks, are a common occurrence during pregnancy due to the rapid stretching of the skin. They are not a medical emergency and do not require immediate attention from a healthcare provider.
Choice B rationale
During pregnancy, the nipples and areola typically become darker, not paler, as the breasts enlarge. This change is due to hormonal influences and increased blood flow to the area.
Choice C rationale
Fetal movement, also known as quickening, is usually felt by the mother between 18 to 25 weeks of gestation, not as early as 10 weeks. At 10 weeks, the fetus is still too small for its movements to be felt by the mother.
Choice D rationale
Some nausea and vomiting, known as morning sickness, is normal during pregnancy. However, if a pregnant woman is unable to keep food or water down, it is important to contact a healthcare provider to ensure she and the baby are receiving adequate nutrition and hydration.