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Table 3 24 hour pH monitoring data of subjects

From: Response of the airways and autonomic nervous system to acid perfusion of the esophagus in patients with asthma: a laboratory study

 

SPRP

SPRN

SNRP

SNRN

Proximal sensor (15cm above LES)

Total No of reflux episodes

100.0 ± 23.2

14.7 ± 7.2

87.7 ± 25.3

12.1 ± 2.8

No of reflux episodes> 5min

5.8 ± 1.5

0.6 ± 0.3

3.7 ± 1.2

1.7 ± 0.6

Longest reflux episode

71.5 ± 14.8

13.0 ± 12.8

45.7 ± 17.3

2.9 ± 1.4

Total % of time pH<4

9.8 ± 3.4

0.2 ± 0.05

4.9 ± 1.3

0.3 ± 0.07

% of time pH<4 in upright position

7.0 ± 2.8

0.2 ± 0.06

8.1 ± 2.1

0.3 ± 0.09

% of time pH<4 in supine position

12.1 ± 5.3

0.1 ± 0.0

5.3 ± 2.8

0.3 ± 0.2

Demeester score

45.2 ± 12.1

3.7 ± 2.3

31.1 ± 7.3

2.8 ± 0.4

Distal sensor (5cm above LES)

Total No of reflux episodes

103.2 ± 20

31.5 ± 7.3

64.9 ± 13.8

22.7 ± 7.2

No of reflux episodes> 5min

6.4 ± 0.9

10.8 ± 8.1

4.3 ± 0.9

1.6 ± 0.8

Longest reflux episode

58.8 ± 15.2

4.8 ± 1.7

51.2 ± 15.4

2.9 ± 1.1

Total % time pH<4

14.6 ± 4.5

0.7 ± 0.2

8.8 ± 2.0

0.5 ± 0.2

% time pH<4 in upright position

9.7 ± 3.3

1.5 ± 0.7

7.5 ± 2.4

1.1 ± 0.7

% time pH<4 in supine position

20.2 ± 6.2

0.7 ± 0.3

5.9 ± 2.0

0.5 ± 0.2

Demeester score

57.0 ± 12.2

6.3 ± 1.3

31.4 ± 5.4

4.3 ± 1.2

  1. All values as mean ± SE.
  2. SPRP GERD symptom positive, reflux positive, SPRN GERD symptom positive, reflux negative, SNRP GERD symptom negative, reflux positive, SNRN GERD symptom negative, reflux negative.