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 B
Explanation
Choice A reason: This choice is incorrect because a CD4+ T-cell count of less than 200 cells/µL and the presence of PCP are indicative of AIDS, not the chronic asymptomatic phase of HIV.
Choice B reason: This is the correct choice. A CD4+ T-cell count of less than 200 cells/µL and an opportunistic infection such as PCP meet the CDC criteria for an AIDS diagnosis.
Choice C reason: This choice is incorrect. A CD4+ T-cell count of less than 200 cells/µL is below the normal range and is one of the criteria for an AIDS diagnosis.
Choice D reason: This choice is incorrect because the acute HIV infection phase is characterized by a high viral load and a decrease in CD4+ T-cell count, but not necessarily below 200 cells/µL or the presence of opportunistic infections.
Correct Answer is ["A","C","D","E"]
Explanation
Choice A reason: A sensation of being cold can occur as the body's circulation diminishes and blood flow to the extremities decreases.
Choice B reason: A heightened sense of hearing is not typically a sign of impending death; this choice is incorrect.
Choice C reason: Difficulty swallowing can be a sign of impending death due to the body's muscles weakening and a decrease in reflexes.
Choice D reason: Tachycardia may occur as the heart tries to compensate for decreased function in other systems.
Choice E reason: Cheyne-Stokes respirations, characterized by a pattern of irregular breathing, are a common sign of impending death.
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