Table 4.
Correlation between multichannel intraluminal impedance and pH analysis and the reflux finding score/ reflux symptom index analysis
| ERD/NERD | HE | No GERD1 | P value | |
| AET (%) | 7.4 ± 3.2 | 3.5 ± 1.7 | 1.9 ± 0.8 | < 0.05 |
| Reflux number (n) | 103.2 ± 12.1 | 44.7 ± 6.2 | 35.1 ± 7.4 | < 0.05 |
| Proximal refluxes (mean %) | 31 | 29 | 18 | < 0.05 |
| Acid refluxes (n) | 62.5 ± 15.4 | 32.9 ± 5.1 | 19.7 ± 6.2 | < 0.05 |
| Non-acid refluxes (n) | 40.1 ± 7.6 | 13.1 ± 4.4 | 15.8 ± 4.9 | < 0.05 |
| Gas refluxes (n) | 11.6 ± 9.7 | 13.1 ± 8.1 | 21.7 ± 15.3 | < 0.05 |
| SAP/SI | Positive | Positive | Negative | - |
| RFS | 10.9 ± 3.3 | 9.1 ± 2.7 | 7.6 ± 3.1 | NS |
| RSI | 14.3 ± 5.2 | 16.3 ± 4.7 | 15.8 ± 4.9 | NS |
1
Patients with normal acid exposure time and without correlation between symptoms and refluxes. AET: Acid exposure time; ERD: Erosive esophagitis; NERD: Non erosive esophagitis; HE: Hypersensitive esophagus. SAP/SI: Symptom association probability/symptom index; RFS: Reflux finding score; RSI: Reflux symptom index; NS: Not statistically significant.