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 A
Explanation
Assessing fetal heart rate (FHR) and maternal vital signs would be the highest priority nursing intervention when admitting a pregnant woman who has experienced a bleeding episode in late pregnancy. This is because fetal distress or maternal instability may require immediate medical intervention, such as delivery via emergency cesarean section or blood transfusions, respectively.
Therefore, assessing the FHR and maternal vital signs will help to determine the urgency of the situation and guide the next steps in the management of the patient. Once the patient's condition has stabilized, performing venipuncture for hemoglobin and hematocrit levels, monitoring uterine contractions, and placing clean disposable pads to collect any drainage can be done as appropriate.
Correct Answer is C
Explanation
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.
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