A 12 year-old boy develops intermittent shoness of breath over the past 6 months. He is not on any medications and has no significant family history. The vitals are within normal limits and the lungs are clear to auscultation. Lung function tests reveal a FEV1/FVC ratio of 82%. Which of the following would be most helpful in excluding a diagnosis of asthma in this patient?
A 12 year-old boy develops intermittent shoness of breath over the past 6 months. He is not on any medications and has no significant family history. The vitals are within normal limits and the lungs are clear to auscultation. Lung function tests reveal a FEV1/FVC ratio of 82%. Which of the following would be most helpful in excluding a diagnosis of asthma in this patient?
💡 Explanation
A 12 year-old boy develops intermittent shoness of breath over the past 6 months. He is not on any medications and has no significant family history. The vitals are within normal limits and the lungs are clear to auscultation. Lung function tests reveal a FEV1/FVC ratio of 82%. Which of the following would be most helpful in excluding a diagnosis of asthma in this patient?
✓ Correct Answer: C. Negative methacholine challenge
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