A nurse is caring for a child who has a suspected diagnosis of cystic fibrosis. Which of the following diagnostic tests will confirm the diagnosis?
A sputum culture
Sweat chloride test
A stool fat content analysis
Pulmonary function tests
The Correct Answer is B
A. A sputum culture may be performed to identify respiratory infections but does not confirm cystic fibrosis.
B. The sweat chloride test is the gold standard diagnostic test for cystic fibrosis, measuring chloride levels in sweat.
C. A stool fat content analysis may be performed to assess pancreatic function in cystic fibrosis, but it does not confirm the diagnosis.
D. Pulmonary function tests may reveal characteristic patterns of lung disease in cystic fibrosis but are not diagnostic on their own.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Capillary refill assesses peripheral perfusion and is not directly related to tracheostomy suctioning.
B. Increased respiratory rate may indicate distress or inadequate airway clearance, not necessarily effectiveness of suctioning.
C. Oxygen saturation should be monitored but may not immediately reflect the effectiveness of suctioning.
D. Clear breath sounds indicate that the airway is patent and free of secretions, suggesting effective suctioning.
Correct Answer is D
Explanation
A. Encouraging physical activity is important, but it should be tailored to the child's asthma management plan and individual triggers.
B. Cromolyn sodium is a preventive medication and should be taken as prescribed, not solely in response to symptoms.
C. Peak expiratory flow meter should be used as directed by the healthcare provider, often more frequently than once per week, especially during symptom exacerbations or changes in treatment.
D. Avoiding triggers is a key component of asthma management to prevent exacerbations and improve control.
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