Clinical Study
Comparison of Esophageal Function Tests in Chinese Patients with Functional Heartburn and Reflux Hypersensitivity
Table 2
Results of 24-hour multichannel intraluminal impedance and pH recording.
| Items | FH | RH | Independent sample t-test, chi-square test, or Fisher’s exact test | HV | ANOVA, chi-square test, or Fisher’s exact test | | | |
| DeMeester | 2.7 ± 2.4 | 3.3 ± 2.4 | | 3.0 ± 2.4 | | Acid exposure upright (%) | 1.0 ± 1.4 | 1.4 ± 1.4 | | 1.4 ± 1.7 | | Acid exposure recumbent (%) | 0.1 ± 0.2 | 0.1 ± 0.2 | | 0.1 ± 0.2 | | Acid exposure total (%) | 0.6 ± 0.7 | 0.8 ± 0.8 | | 0.7 ± 0.9 | | Bolus exposure upright (%) | 1.8 ± 1.5 | 2.6 ± 2.0 | | 1.9 ± 1.4 | | Bolus exposure recumbent (%) | 0.3 ± 0.7 | 0.4 ± 0.7 | | 0.2 ± 0.4 | | Bolus exposure total (%) | 0.9 ± 0.8 | 1.5 ± 1.1 | | 1.0 ± 0.7 | | Proximal acid event (n) | 5.6 ± 5.6 | 9.8 ± 8.9 | | 5.4 ± 4.4 | | Proximal nonacid event (n) | 6.9 ± 5.6 | 11.6 ± 10.8 | | 6.8 ± 5.7 | | Proximal total reflux event (n) | 12.3 ± 9.0 | 20.9 ± 16.8 | | 12.2 ± 7.5 | | Distal acid reflux event (n) | 8.4 ± 8.0 | 13.5 ± 11.2 | | 8.6 ± 7.5 | | Distal nonacid reflux event (n) | 16.6 ± 11.1 | 25.0 ± 15.3 | | 16.8 ± 9.8 | | Distal total reflux event (n) | 25.0 ± 14.4 | 38.5 ± 20.9 | | 25.1 ± 14.4 | | PSPW index (%) | 47.0 ± 17.9 | 33.8 ± 15.8 | | 73.6 ± 11.7 | | MNBI (ohms) | 2972.0 ± 775.6 | 2485.3 ± 939.2 | | 3290.1 ± 613.5 | |
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HV: healthy volunteers; FH: functional heartburn; RH: reflux hypersensitivity; PSPW index: postreflux swallow-induced peristaltic wave index; MNBI: mean nocturnal baseline impedance.
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