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Table 2 Mean volume and height of refluxate according to the route of the gastric tube

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

Pylorus Posture Pressure (mmHg) Volume (mL) Height (mm)
    RS PM p value RS PM p value
Small Upright 20 50.8 ± 4.0 56.4 ± 1.7 .002 72.6 ± 3.6 72.5 ± 5.6 .684
30 58.4 ± 1.5 61.2 ± 2.2 .034 87.3 ± 3.6 98.3 ± 3.8 .016
40 69.8 ± 2.6 75.6 ± 1.5 .008 111.0 ± 5.6 118.6 ± 5.0 .008
Semi-Fowler 20 53.4 ± 4.0 59.0 ± 2.0 .004 86.9 ± 11.6 164.0 ± 8.0 <.001
30 58.0 ± 0.7 60.6 ± 0.9 .040 132.7 ± 3.2 191.5 ± 9.3 .008
40 72.6 ± 0.9 73.4 ± 1.3 .421 135.8 ± 5.5 217.8 ± 7.4 .008
Large Upright 20 87.7 ± 1.1 96.4 ± 1.7 .008 101.6 ± 4.8 113.4 ± 2.9 .008
30 150.8 ± 1.1 158.0 ± 3.2 .008 151.4 ± 2.2 165.4 ± 1.5 .008
40 156.8 ± 3.3 198.0 ± 4.7 .008 166.1 ± 1.7 193.7 ± 6.6 .008
Semi-Fowler 20 114.7 ± 3.1 144.5 ± 2.8 <.001 137.5 ± 3.9 162.5 ± 5.0 <.001
30 158.8 ± 0.8 175.6 ± 1.7 .004 181.6 ± 1.0 198.8 ± 6.4 .008
   40 200.2 ± 2.7 227.6 ± 4.8 .004 221.0 ± 3.4 233.4 ± 4.2 .008
  1. The width of a pressure pulse was 1 second.
  2. PM posterior mediastinum, RS retrosternal space.