Mean (SD) values for oesophageal manometry and 24 hour oesophageal pH analysis in gastro-oesophageal reflux disease
| Food regurgitation (n=13) | |||
|---|---|---|---|
| Acid reflux (n=20) | EGG normal | EGG abnormal | |
| Lower oesophageal sphincter | |||
| Mean pressure (mm Hg) | 11.8 (5.4) | 7.2 (3.5) | 8.7 (3.8) |
| Mean total length (cm) | 3.6 (1.1) | 3.6 (1.3) | 3.9 (1.7) |
| Mean abdominal length (cm) | 2.0 (1.0) | 2.2 (0.8) | 2.2 (1.0) |
| Oesophageal acid exposure | |||
| Mean Demeester score | 58.6 (42) | 25.5 (11)* | 93.5 (78)* |
| (normal <14.72) | |||
| Mean percentage pH <4 | 14.0 (10) | 6.3 (4) * | 23.2 (18)* |
| (normal < 4.45) | |||
Food regurgitators with an abnormal electrogastrogram (EGG) had significantly higher oesophageal acid exposure than those with a normal EGG (*p<0.05). There were no significant differences in lower oesophageal sphincter measurements between food regurgitation patients with a normal and abnormal EGG.