Table 4 Acid exposure values among asthmatics and controls
From: Esophageal motility, vagal function and gastroesophageal reflux in a cohort of adult asthmatics
|  | Controls | Asthmatics with (−) GERD symptom score | Asthmatics with (+) GERD symptom score | All asthmatics* |
|---|---|---|---|---|
Proximal sensor | (n = 16) | (n = 10) | (n = 20) | (n = 30) |
Total time pH < 4 (%) | 0.07 (0–0.4) | 2.0 (0.2-10.6) | 2.3 (0.03-50.9) | 2.1 (0.04-29.7) |
Upright time pH < 4 (%) | 0.02 (0–0.4) | 1.3 (0–24.0) | 3.3 (0–66.3) | 1.3 (0–44.0) |
Supine time pH < 4 (%) | 0.12 (0–0.5) | 3.2 (0–17.8) | 0.2 (0–34.6) | 0.4 (0–25.9) |
Total no. of reflux episodes | 6.0 (0–25.0) | 52.0 (3.0-193.0) | 55.5 (0.2-233.0) | 52 (1.6-233.0) |
No. of episodes ≥ 5 min | 0 (0–1.0) | 2 (0–128.3) | 3.5 (0–122.5) | 3 (0–128.3) |
Longest episode (min) | 0.9 (0–7.8) | 10.0 (1.0-155.4) | 37.8 (0.06-205.7) | 25.8 (0.07-189.4) |
DeMeester score | 0.95 (0.2-4.8) | 23.4 (4.4-64.0) | 22.3 (0.2-152.7) | 23.4 (0.4-106.0) |
Distal sensor | (n = 26) |  |  |  |
Total time pH < 4 (%) | 0.4 (0.08-1.5) | 6.3 (1.0-14.7) | 7.9 (0.3-35.7) | 7.4 (0.5-19.8) |
Upright time pH < 4 (%) | 0.2 (0–3.0) | 6.5 (0–28.8) | 4.0 (0–53.9) | 4.9 (0.08-30.2) |
Supine time pH < 4 (%) | 0.4 (0.07-2.8) | 4.6 (0.4-13.4) | 2.7 (0.01-25.5) | 3.0 (0.4-15.6) |
Total no. of reflux episodes | 18.0 (2.7-94.2) | 33.5 (9.0-162.0) | 65.5 (10.0-180.0) | 43.5 (10.3-162) |
No. of episodes ≥ 5 min | 0 (0–2) | 2.0 (1.0-9.0) | 6.5 (0–15.7) | 3.5 (1–9.4) |
Longest episode (min) | 1.9 (0.5-20.6) | 12.8 (7.8-104.5) | 27.5 (0.5-126.0) | 20.1 (1.4-104.5) |
DeMeester score | 3.35 (0.7-11.5) | 17.9 (5.4-55.6) | 33.7 (2.2-131.0) | 23.1 (5.4-61.2) |