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 ["A","B"]
Explanation
These two conditions belong to the disease classification of chronic obstructive pulmonary disease (COPD). COPD is a group of lung diseases that cause persistent and progressive airflow limitation and difficulty breathing. Asthma is a condition that causes inflammation and narrowing of the airways, leading to wheezing, coughing, chest tightness, and shortness of breath. Pulmonary emphysema is a condition that damages the alveoli (air sacs) in the lungs, reducing their elasticity and surface area, resulting in less oxygen exchange and more trapped air. Both asthma and pulmonary emphysema can be triggered by environmental factors, such as allergens, pollutants, tobacco smoke, or infections. The main difference between asthma and pulmonary emphysema is that asthma is reversible with medication, while pulmonary emphysema is irreversible and progressive.
Correct Answer is D
Explanation
Acute appendicitis is an inflammation of the appendix, a small pouch attached to the large intestine that has no known function. It can cause abdominal pain that usually starts around the navel and then shifts to the lower right quadrant, nausea, vomiting, loss of appetite, fever, and constipation or diarrhea. The McBurney point is a spot located about two-thirds of the way from the navel to the right hip bone that is tender when pressed in patients with appendicitis. A CT scan can show signs of inflammation and enlargement of the appendix and rule out other causes of abdominal pain. Surgery (appendectomy) is the standard treatment for appendicitis to remove the inflamed appendix and prevent complications such as peritonitis (infection of the lining of the abdominal cavity) or abscess (collection of pus) formation.

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