A nurse is reviewing the diagnostic findings for a preschool-age child who is suspected of having cystic fibrosis. Which of the following findings should the nurse identify as an indication of cystic fibrosis?
Sweat chloride content 85 mEq/L
72-hour stool analysis sample indicating hard, packed stools
Increased blood levels of fat-soluble vitamins
Chest x-ray negative for atelectasis
The Correct Answer is A
Choice A reason: A sweat chloride content of 85 mEq/L is indicative of cystic fibrosis, as normal values are below 30 mEq/L, and values above 60 mEq/L are diagnostic for cystic fibrosis.
Choice B reason: Hard, packed stools could be a sign of cystic fibrosis but are not as diagnostic as a sweat chloride test.
Choice C reason: Increased blood levels of fat-soluble vitamins are not typically associated with cystic fibrosis; patients often have deficiencies due to malabsorption.
Choice D reason: A chest x-ray negative for atelectasis does not indicate cystic fibrosis, as atelectasis can be present in many conditions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Separation anxiety is common in early childhood and typically resolves as the child develops, usually by around age 2 or 3.However, it can also be present in school-age children, especially if it develops into separation anxiety disorder.
Choice B reason: This is not typically included in teaching about separation anxiety. Detachment might be a response to prolonged separation or hospitalization, but it is not a stage of separation anxiety.
Choice C reason:
While kicking a stranger can be a manifestation of separation anxiety, it’s more constructive to focus on common symptoms such as excessive worry when apart from home or family, or panic and fear at the time of separation
Choice D reason: Separation anxiety that is severe and persistent can lead to challenges in adaptability and functioning. It’s important for caregivers to recognize symptoms and seek help if the anxiety interferes with daily life.
Correct Answer is D
Explanation
Choice A reason: Hyperventilation can be a sign of oxygen toxicity as the body attempts to balance oxygen and carbon dioxide levels.
Choice B reason: Increased blood pressure is not typically a direct sign of oxygen toxicity; it may be related to other underlying conditions.
Choice C reason: Decreased PaCO2 can be a result of hyperventilation, which is a compensatory mechanism in response to oxygen toxicity.
Choice D reason: Unconsciousness can be a severe sign of oxygen toxicity, indicating a high level of oxygen in the blood affecting brain function.
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