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Table 1 Mean volume and height of refluxate according to the size of the pylorus

From: A flow visualization model of duodenogastric reflux after esophagectomy with gastric interposition

Route Posture Pressure (mmHg) Volume (mL) Height (mm)
    Small pylorus Large pylorus p value Small pylorus Large pylorus p value
RS Upright 20 50.8 ± 4.0 87.8 ± 1.1 .001 72.6 ± 3.6 101.6 ± 4.8 .001
30 58.4 ± 1.5 150.8 ± 1.1 .008 87.3 ± 3.6 151.4 ± 2.2 .008
40 69.8 ± 2.6 156.8 ± 3.3 .008 111.0 ± 5.6 166.1 ± 1.7 .008
Semi-Fowler 20 53.4 ± 4.0 114.7 ± 3.1 <.001 86.9 ± 11.6 137.5 ± 3.9 <.001
30 58.0 ± 0.7 158.8 ± 0.8 .008 132.7 ± 3.2 181.6 ± 1.0 .008
40 72.6 ± 0.9 200.2 ± 2.7 .008 135.8 ± 5.5 221.0 ± 3.4 .008
PM Upright 20 56.4 ± 1.7 96.4 ± 1.7 .001 72.5 ± 5.6 113.4 ± 2.9 .001
30 61.2 ± 2.2 158.0 ± 3.2 .008 98.3 ± 3.84 165.4 ± 1.5 .008
40 75.6 ± 1.5 198.0 ± 4.7 .008 118.6 ± 5.0 193.7 ± 6.6 .008
Semi-Fowler 20 59.0 ± 2.0 144.5 ± 2.8 <.001 164.0 ± 8.0 162.5 ± 5.0 .529
30 60.6 ± 0.9 176.0 ± 1.8 .004 191.3 ± 9.3 198.8 ± 6.4 .310
   40 73.4 ± 1.3 227.7 ± 4.3 .004 217.8 ± 7.4 233.4 ± 4.2 .008
  1. The width of a pressure pulse was 1 second.
  2. PM posterior mediastinum, RS retrosternal space.