Abstract
Cough Hypersensitivity Syndrome is the urge to cough following minimal stimulation, but its mechanism and method of provocation remain unexplained. 121 patients (44 males, 77 females; age range 18-81 years) were evaluated. High resolution manometry was performed on consecutive patients presenting with unexplained respiratory symptoms (Respiratory Group 61). Data were compared with matched controls, i.e. dyspepsia without respiratory symptoms (Dyspepsia Group 60). Results showed increased inspiratory gastro-oesophageal pressure gradient due to significantly lower intra-oesophageal pressure on inspiration (p = 0.001), and reduced oesophageal motility in the Respiratory Group. Further research in respiratory conditions characterised by decreased intrathoracic pressure during inspiration is needed.
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