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 C
Explanation
A nurse caring for a toddler who had a cast applied 2 hours ago due to multiple fractures of the right hand should report immediately to the charge nurse if the fingers on the right hand have a capillary refill of 4 seconds.
This could indicate that there is a problem with circulation.
Choice A is not an answer because it is not unusual for a child to not attempt to move her right arm or fingers after having a cast applied.
Choice B is not an answer because it is not unusual for the fingertips of the right hand to be swollen and bruised after having a cast applied.
Choice D is not an answer because it is not unusual for a child to not keep their arm elevated on a pillow after having a cast applied.
Correct Answer is D
Explanation
Checking the baby’s skin three times each day can help the mother monitor for any skin irritation or breakdown caused by the harness.
This can help prevent complications and ensure that the harness is being used safely and effectively.

Choice A is not the best answer because the mother should not adjust the harness straps on her own.
This should be done by a healthcare provider to ensure that the harness is properly fitted.
Choice B is not the best answer because the diaper should be placed under the harness, not over it.
Choice C is not the best answer because massaging lotion on the skin around the harness clasps may not be necessary and could potentially cause skin irritation.
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