Radiographic, impedancometric, and pH metric data in controls and patients
| Controls | Patients | |
|---|---|---|
| Radiographs were taken in anteroposterior (AP) and lateral (L) direction. Differences between controls and patients are not statistically significant. | ||
| Air bubble size AP fasting (cm2) | 11.5 (1.3) | 14.0 (5.4) |
| Air bubble size L fasting (cm2) | 9.9 (3.5) | 18.3 (9.1) |
| Air bubble size AP postprandial (cm2) | 11.9 (1.7) | 10.5 (2.9) |
| Air bubble size L postprandial (cm2) | 11.0 (1.3) | 12.5 (3.4) |
| Number of swallows fasting/h | 79.5 (8.5) | 70.0 (14.5) |
| Number of air swallows fasting/h | 21.5 (3.4) | 30.4 (9.4) |
| Number of liquid reflux fasting/h | 0.6 (0.4) | 0.9 (0.4) |
| Number of gas reflux fasting/h | 4.7 (1.0) | 4.4 (0.8) |
| Number of mixed reflux fasting/h | 0.8 (0.3) | 3.4 (2.8) |
| Number of swallows postprandial/h | 64.2 (6.1) | 49.5 (5.9) |
| Number of air swallows postprandial/h | 24.4 (2.8) | 21.8 (5.8) |
| Number of liquid reflux postprandial/h | 1.8 (0.4) | 1.8 (0.4) |
| Number of gas reflux postprandial/h | 3.0 (0.6) | 3.7 (0.8) |
| Number of mixed reflux postprandial/h | 4.2 (0.7) | 6.2 (3.1) |
| Number of episodes with pH<4 | 5.6 (1.2) | 3.0 (1.4) |
| % of time with pH<4 | 6.0 (2.3) | 4.3 (2.0) |