Table 2

Positive EBC pH profile in a chronic cough patient who subsequently responded well to proton pump inhibition. Note that the patient provides multiple EBC samples over the course of 1 – 2 days, both immediately after coughing, and in the absence of a recent cough (none in previous 1 hour). There are several cough episodes for which there is a low EBC pH value, while other values are normal (revealing transience of the low EBC pH value in this chronic cough patient)

Date

Time

Symptom

EBC pH

12/26/04

1545

Cough

8.3

12/26/04

1745

Cough

5.0

12/26/04

1945

Cough

7.9

12/27/04

1015

Cough

6.0

12/27/04

1215

Cough

7.7

12/27/04

1730

Well

8.1

12/27/04

1930

Well

7.7

12/27/04

2130

Cough

5.8

Hunt et al. Cough 2006 2:3   doi:10.1186/1745-9974-2-3