The parents are questioning why their newborn was born deaf when there are no other deaf family members.
At which stage of the pregnancy could the nurse explore possible exposure to a teratogenic agent?
18 weeks after fertilization.
6 weeks after fertilization.
12 weeks after fertilization.
Incomplete question/stem.
The Correct Answer is B
“6 weeks after fertilization.” Teratogens can begin affecting the developing embryo as early as 10 to 14 days after conception 1.
During embryonic development, there are periods when the developing organ systems show more sensitivity to teratogens.
Choice A is incorrect because 18 weeks after fertilization is not the earliest stage of pregnancy when exposure to a teratogenic agent could occur.
Choice C is incorrect because 12 weeks after fertilization is not the earliest stage of pregnancy when exposure to a teratogenic agent could occur.
Choice D is incorrect because this is not an incomplete question/stem.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
During pregnancy, a woman needs to increase her caloric intake by approximately 300 extra calories per day.
These extra calories should come from a balanced diet of protein, fruits, vegetables, and whole grains.
Choice A is incorrect because adding an additional 500 calories/day by drinking milkshakes is not a healthy way to increase caloric intake during pregnancy.
Choice C is incorrect because doubling caloric intake is not necessary during pregnancy.
Choice D is incorrect because while it is important to watch caloric intake during pregnancy, it is also important to increase caloric intake by approximately 300 extra calories per day.
Correct Answer is A
Explanation
A positive urine hCG test is a priority assessment to assess for a possible pregnancy.
The human chorionic gonadotropin (hCG) hormone is produced by the placenta after implantation and can be detected in the urine of pregnant women.
A urine hCG test is a common method used to confirm pregnancy.
Choice B is not an answer because changes in uterine size and shape occur later in pregnancy and are not a priority assessment for early pregnancy detection.
Choice C is not an answer because a fetal heartbeat can usually be detected at around 6-7 weeks of pregnancy and is not a priority assessment for early pregnancy detection.
Choice D is not an answer because Chadwick’s sign, which refers to the bluish discoloration of the cervix, vagina, and vulva due to increased blood flow, occurs later in pregnancy and is not a priority assessment for early pregnancy detection.
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