Table 1.
Characterization of deglutitive LES relaxation in the EPT simulation of 75 control subjects
| Median | 5th–95th Percentile | |
|---|---|---|
| Integrated relaxation pressure (4-s IRP)a | 6.2 | 2.2–12.7 |
| Time of minimal LES pressure (from UES relaxation) (s) | 5.3 | 3.3–7.4 |
| Minimal LES pressure (mm Hg)a | 3.7 | 0.3–8.6 |
| Maximal LES relaxation (relative to pre-swallow pressure) (%) | 71% | 64–96% |
| Persistence of LES relaxation from UES relaxation to LES contraction (to 20 mm Hg) (s) | 9.2 | 6.5–11.5 |
EPT, esophageal pressure topography; IRP, integrated relaxation pressure; LES, lower esophageal sphincter; UES, upper esophageal sphincter.
a
These pressures are reported relative to intragastric pressure per convention. Unless otherwise noted, pressures are relative to atmospheric.