PANCE Exam Practice Questions: Quiz 29

A 7-year-old male presents with a history of frequent respiratory infections with recurrent pulmonary infiltrates and failure to thrive. His cough is persistent and productive of thick, green sputum. A recent sputum culture was positive for Haemophilus influenzae and Staphylococcus aureus. Which of the following laboratory results is pathognomonic for his condition?
- A. abdominal flat plate showing small intestinal air–fluid levels and small colon
- B. chest radiography revealing hyperinflation and small airway obstruction
- C. elevated sweat chloride levels
- D. irreversible changes in FVC and FEV1

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