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 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.
Correct Answer is C
Explanation
Choice A reason: Hyperactivity is not typically associated with chronic renal failure in children. Instead, children may experience fatigue and lethargy due to anemia and the overall decreased function of the kidneys.
Choice B reason: Weight gain can occur in chronic renal failure due to fluid retention; however, it is not as characteristic as delayed growth, which is a direct result of the disease's impact on the child's development.
Choice C reason: Delayed growth is a common finding in children with chronic renal failure due to various factors, including metabolic imbalances, bone disorders, and malnutrition, all of which can impede normal growth.
Choice D reason: A flushed face is not a typical finding in chronic renal failure. More common are signs related to fluid overload, such as swelling around the eyes, feet, and ankles, and symptoms of uremia like pallor.
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