Cystic fibrosis (CF) is suspected in a toddler. Which test is essential in establishing this diagnosis?
Bronchoscopy
Serum calcium
Urine creatinine
Sweat chloride test
The Correct Answer is D
This test measures the amount of chloride in the sweat, which is abnormally high in people with cystic fibrosis (CF). CF is an inherited disorder that affects the cells that produce mucus, sweat, and digestive juices.
Choice A is wrong because bronchoscopy is a procedure that allows the doctor to examine the airways and lungs, but it is not essential for diagnosing CF.
Choice B is wrong because serum calcium is a blood test that measures the level of calcium in the blood, which is not related to CF.
Choice C is wrong because urine creatinine is a test that measures the amount of creatinine in the urine, which reflects the kidney function, but it is not relevant to CF.
Normal ranges for sweat chloride test are:
- Less than 40 millimoles per liter (mmol/L) for children and adults
- Less than 30 mmol/L for infants younger than 6 months
A sweat chloride level of more than 60 mmol/L is considered positive for CF.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Assess the parents’ anxiety level and readiness to learn. This is because the nurse needs to evaluate the parent’s emotional state and their ability to comprehend and retain information before providing any teaching.
The nurse should also consider the parent'slearning style, cultural background, and literacy level.
Choice B is wrong because gathering literature for the parents is not the first action. The nurse should first assess the parents’ needs and preferences and then select appropriate materials that match their level of understanding and language.
Choice C is wrong because securing a quiet place for teaching is not the first action. The nurse should first assess the parents’ readiness to learn and then choose a suitable environment that minimizes distractions and promotes comfort.
Choice D is wrong because discussing the plan with the nursing team is not the first action. The nurse should first assess the parents’ anxiety level and readiness to learn and then collaborate with other health care professionals to provide consistent and accurate information.
Correct Answer is B
Explanation
A way to establish rapport. Doing a simple magic trick using gauze is a way to gain the child’s trust and attention, and to make the dressing change less stressful and more fun. This is appropriate for a 5-year-old child who is in the stage of initiative versus guilt according to Erikson’s theory of psychosocial development.
Choice A is wrong because 5-year-old children are curious and imaginative, and they enjoy magic tricks and fantasy play.
Choice C is wrong because a simple magic trick is not too distracting, but rather a way to engage the child and reduce anxiety.
Choice D is wrong because a simple magic trick is not inappropriate due to the child’s cognitive development. According to Piaget’s theory of cognitive development, 5-year-old children are in the preoperational stage, which means they can use symbols and language to represent objects and events.
A magic trick using gauze is a symbolic representation of something else, which the child can understand and appreciate.
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