When assessing the knowledge of new parents of a child born with Maple Syrup Urine Disease (MSUD), an autosomal recessive inherited disorder, which statement is true?
Only one copy of the abnormal gene is required for the disorder to be expressed.
The disorder is carried on the X chromosome.
Both genes of a pair must be abnormal for the disorder to be expressed.
The disorder occurs in males and heterozygous females.
The Correct Answer is C
Choice A rationale:
Incorrect. This statement describes autosomal dominant inheritance, not autosomal recessive inheritance. In autosomal dominant inheritance, only one copy of the abnormal gene is needed to cause the disorder. However, in autosomal recessive inheritance, both copies of the gene must be abnormal for the disorder to be expressed.
Choice B rationale:
Incorrect. This statement describes X-linked recessive inheritance, not autosomal recessive inheritance. In X-linked recessive inheritance, the abnormal gene is located on the X chromosome. Males have only one X chromosome, so if they inherit the abnormal gene, they will have the disorder. Females have two X chromosomes, so they must inherit two copies of the abnormal gene (one from each parent) to have the disorder.
Choice C rationale:
Correct. This statement accurately describes autosomal recessive inheritance. In autosomal recessive inheritance, both copies of the gene must be abnormal for the disorder to be expressed. This means that both parents must be carriers of the abnormal gene in order for their child to have the disorder.
Choice D rationale:
Incorrect. This statement is partially correct, but it does not fully describe autosomal recessive inheritance. The disorder can occur in both males and females, but it is not limited to heterozygous females. Homozygous females (those who have two copies of the abnormal gene) will also have the disorder.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
A positive contraction stress test (CST) indicates that the fetal heart rate decelerates late in response to uterine contractions, suggesting potential uteroplacental insufficiency. However, the scenario does not describe a CST being performed, as it does not mention any assessment of uterine contractions or their relationship to fetal heart rate changes.
Choice C rationale:
A negative contraction stress test (CST) would demonstrate no late decelerations in response to contractions, suggesting adequate placental function. However, as mentioned earlier, a CST is not the test being performed in this scenario.
Choice D rationale:
A non-reactive nonstress test (NST) means that there were not enough fetal heart rate accelerations (at least 2, each lasting at least 15 seconds and peaking at least 15 beats above baseline) within a 20-minute period. This finding sometimes warrants further evaluation of fetal well-being. However, the scenario clearly states that 3 accelerations meeting the criteria for reactivity were observed.
Choice B rationale:
A reactive nonstress test (NST) is considered reassuring and indicates that the fetal heart rate is responding appropriately to fetal movement, suggesting that the fetus is likely healthy and well-oxygenated. The presence of 3 accelerations meeting the criteria for reactivity within a 20-minute period is the hallmark of a reactive NST.
Correct Answer is A
Explanation
Choice A rationale:
Joining a support group can be beneficial. I can provide some recommendations.
Support groups offer a safe and supportive environment where couples can share their experiences, feelings, and coping strategies with others who understand what they are going through. This can be incredibly helpful in reducing isolation, normalizing their emotions, and promoting a sense of hope. Support groups can also provide valuable information and resources about infertility, treatment options, and coping strategies. Additionally, they can help couples develop a sense of community and belonging, which can be especially important during a challenging time.
I can provide some recommendations for support groups in your area. This demonstrates the nurse's willingness to help the couple find the resources they need and underscores the value of support groups in managing infertility.
Choice B rationale:
Share your situation with friends and family so they can provide support.
While sharing with friends and family can be helpful for some couples, it's important to recognize that not everyone may be able to provide the kind of support that is needed. Some friends and family members may not understand the challenges of infertility or may offer unsolicited advice, which can be hurtful. Additionally, couples may not feel comfortable sharing such personal information with their loved ones. It's important to respect the couple's privacy and preferences in this regard.
Choice C rationale:
Start adoption proceedings immediately as it can be challenging to adopt an infant.
This response is not appropriate as it does not address the couple's immediate concern, which is how to maintain their emotional balance while dealing with infertility. It also assumes that the couple is interested in adoption, which may not be the case. While adoption can be a wonderful option for some families, it's a major decision that requires careful consideration and should not be rushed into.
Choice D rationale:
Speak only with other friends who are dealing with infertility as they can provide the most help.
While connecting with others who are experiencing infertility can be helpful, it's important not to isolate oneself from other sources of support. Friends and family who are not dealing with infertility can still offer valuable support, understanding, and companionship. It's important to have a variety of supportive relationships in one's life.
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