The nurse is assessing the knowledge of new parents with a child born with maple syrup urine disease (MSUD). This is an autosomal recessive inherited disorder, which means that:
The disorder occurs in males and heterozygous females.
The disorder is carried on the X chromosome.
Both genes of a pair must be abnormal for the disorder to be expressed.
Only one copy of the abnormal gene is required for the disorder to be expressed.
The Correct Answer is C
Both genes of a pair must be abnormal for the disorder to be expressed. In autosomal recessive inheritance, the gene for the disorder is located on an autosome (any chromosome other than a sex chromosome) and a person must inherit two copies of the abnormal gene (one from each parent) in order for the disorder to be expressed. If a person inherits only one copy of the abnormal gene, they are a carrier of the disorder but do not typically show symptoms.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The most common indication for a vacuum-assisted delivery is a prolonged second stage of labor, which means that the mother has been pushing for an extended period without effective descent of the fetal head. The vacuum can help to provide traction to the fetal head and assist with delivery.
Option A is incorrect because a vacuum-assisted delivery is not indicated for the prevention of fetal abnormalities.
Option B is incorrect because a vacuum-assisted delivery is not indicated for the prevention of maternal hemorrhage.
Option D is incorrect because a prolonged first stage of labor is not an indication of
vacuum-assisted delivery. In this case, other interventions, such as augmentation of labor with oxytocin, may be used.
Correct Answer is B
Explanation
Caput succedaneum is a common condition in newborns that causes swelling of the soft tissues of the scalp. It is usually caused by pressure on the baby's head during delivery and can be seen in both vaginal and instrumental births, such as vacuum-assisted deliveries. It generally crosses the suture lines, unlike a cephalohematoma.
Caput succedaneum is not a serious condition and generally resolves on its own within a few days without any treatment. However, the nurse should continue to monitor the newborn for signs of jaundice, which can occur due to the breakdown of red blood cells in the swelling.
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