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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C"]
Explanation
Choice A reason: Clubbing of the fingers is not typically associated with coarctation of the aorta; it is more commonly seen in chronic hypoxia conditions.
Choice B reason: Weak femoral pulses are expected in coarctation of the aorta due to the narrowing of the aorta, which can reduce blood flow to the lower extremities.
Choice C reason: Cool skin of the lower extremities can be a result of decreased blood flow due to the narrowed aorta in coarctation.
Choice D reason: High blood pressure is more commonly associated with coarctation of the aorta, especially in the upper body, due to the narrowing of the aorta increasing resistance to blood flow⁷.
Choice E reason: Severe cyanosis can occur in coarctation of the aorta if there is a significant obstruction to blood flow, leading to poor oxygenation.
Correct Answer is ["A","C","D","E"]
Explanation
Choice A reason: Albuterol is a bronchodilator used to relieve breathing difficulties, which are common in cystic fibrosis.
Choice B reason: Loperamide is an anti-diarrheal medication and is not typically used in the management of cystic fibrosis.
Choice C reason: Tobramycin is an antibiotic that can be nebulized to treat lung infections in cystic fibrosis patients.
Choice D reason: Dornase alfa is an enzyme that helps to thin mucus, improving lung function in cystic fibrosis patients.
Choice E reason: Fat-soluble vitamins are essential in cystic fibrosis due to malabsorption issues associated with the disease.
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