If a child has one parent with Marfan syndrome, what is the likelihood that the child will have Marfan syndrome?
10% chance
25% chance
50% chance
100% chance
The Correct Answer is C
Marfan syndrome is a genetic disorder that affects the connective tissue, causing problems with the heart, blood vessels, eyes, bones, and joints. It is caused by a mutation in the FBN1 gene, which encodes for a protein called fibrillin-1. Marfan syndrome follows an autosomal dominant pattern of inheritance, which means that only one copy of the mutated gene is needed to cause the disorder. A person with Marfan syndrome has a 50% chance of passing on the mutated gene to each child, regardless of the gender of the parent or the child.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
This condition is an infection of the inner lining of the heart chambers and valves, which can be caused by various microorganisms that enter the bloodstream from different sources. The etiologies listed above are all potential risk factors for developing endocarditis.
Correct Answer is C
Explanation
Diabetes insipidus is a disorder that causes the kidneys to produce large amounts of dilute urine, resulting in dehydration and thirst. Diabetes insipidus is not related to diabetes mellitus, which affects blood glucose levels. Therefore, diabetes insipidus does not affect serum glucose levels, which are expected to be normal.
However, diabetes insipidus can affect serum sodium levels, which are a measure of the concentration of salt in the blood. Due to the loss of water from the body, serum sodium levels can become high (hypernatremia) in diabetes insipidus. However, if the patient drinks enough fluids to compensate for the urine output, serum sodium levels can remain normal.
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