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

Answer and Explanation

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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Correct Answer is A

Explanation

Choice A reason: Albuterol is a short-acting beta-2 agonist that is used as a quick-relief medication to prevent exercise-induced bronchoconstriction.

Choice B reason: Prednisone is a corticosteroid used for long-term control, not for immediate relief before exercise.

Choice C reason: Montelukast is a leukotriene receptor antagonist used for long-term control and prevention, not typically for immediate pre-exercise use.

Choice D reason: Fluticasone/salmeterol is a combination of a corticosteroid and a long-acting beta-2 agonist, used for long-term control, not for quick relief before exercise.

A. Blood creatinine 1.3 mg/dL B. Urine output 550 mL in 24 hours C. Blood pressure 100/74 mm Hg D. BUN 8 mg/dL

Correct Answer is A

Explanation

Choice A reason: A blood creatinine level of 1.3 mg/dL is elevated for a school-age child and indicates impaired kidney function, which is a concern in acute glomerulonephritis.

Choice B reason: A urine output of 550 mL in 24 hours is within the normal range for a school-age child and does not need to be reported unless there is a significant change.

Choice C reason: A blood pressure of 100/74 mm Hg is within the normal range for a school-age child and does not indicate an immediate concern.

Choice D reason: A BUN level of 8 mg/dL is within the normal range for a school-age child and does not need to be reported unless there is a significant change.

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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?

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