A Randomized Clinical Trial Comparing the Effects of Antitussive Agents on Respiratory Center Output in Patients With Chronic Cough
Keywords: breathing pattern; chronic cough; CO2 rebreathing; dihydrocodeine; levodropropizine; Fetco2; fractional end-tidal carbon dioxide; P0.1; mouth inspiratory pressure measured 0.1Â s after mouth occlusion; TT; total duration of the respiratory cycle; VËi; in