Exhaled and nasal nitric oxide in children and adults with chronic wet cough

Brief description of study

The purpose of this study is to see if we can use non-invasive tests called forced exhaled nitric oxide (FeNO) (a reading that we get when you blow into a machine through a mouthpiece) and nasal nitric oxide (nNO) (a number that we get after we place a small tube into your nose ) along with data collected from routine care procedures to differentiate the major causes of chronic wet cough (CWC) in adults and children. The devices that make up the nNO testing system (Eco Physics CLD88 EX, Eco Physics Exhalyzer D, and Eco Physics DENOX 88) are considered experimental because they are not cleared by the US Food and Drug Administration (FDA) for clinical use, but can be used in a research setting. The results from the experimental test are for research purposes only and will not be used to make clinical decisions or impact your care management.




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