Does FeNO Predict Clinical Characteristics in Chronic Cough?

To evaluate whether exhaled nitric oxide measurement can facilitate in the assessment of chronic cough patients based on their airway inflammatory phenotype.We have studied consecutive patients attending a specialist cough clinic. 30 patients with high FeNO (> 30 ppb) and 20 patients with low FeNO (< 20 ppb) were recruited.There was a significant correlation between FeNO, B-Eos and sputum eosinophil count (p < 0.001). The number of recorded...