Table 1 The differences of esophageal motility measurements between the 22-channel WPM and 36-sensor SSM during wet swallows (n = 12)
22-channel WPM | 36-sensor SSM | Z value | P | |
|---|---|---|---|---|
LES proximal margin (cm) | 41.5(38-43) | 42(39-43) | -2.11 | 0.035 |
LES length (cm) | 4(4-4) | 3.5(3-4) | 0.00 | 1.000 |
LES rest pressure (mmHg) | 13.5(10-21) | 16.5(14-22.5) | -1.69 | 0.091 |
LES relax ratio (%) | 97.5(92-98.5) | 84(77-88.5) | -2.20 | 0.028 |
Distal esophageal body contraction intensity (mmHg) | 68.5(40-85.25) | 80(50-126.5) | -1.88 | 0.060 |
Distal esophageal body contraction duration (s) | 3.85(2.9-4.2) | 3.7(3.4-4.525) | -1.18 | 0.238 |
Proximal esophageal body contraction intensity (mmHg) | 39(22-54) | 51.5(40-62.75) | -1.96 | 0.050 |
Proximal esophageal body contraction duration (s) | 3.05(2.6-3.275) | 3.2(2.5-3.325) | -0.67 | 0.505 |
UES proximal margin (cm) | 17(16-18) | 16.5(16-17.25) | -0.81 | 0.417 |
UES length (cm) | 4(4-5) | 4(3-5) | -0.52 | 0.603 |
UES rest pressure (mmHg) | 56.5(43-82.5) | 77.5(60-113) | -1.88 | 0.060 |
UES relax ratio (%) | 100(100-100) | 100(97-100) | -0.76 | 0.446 |