Table 4

Detailed analysis of LOS components in hiatus hernia versus controls showing positions of the upper border LOS, pH transition point, SCJ and first pressure peak

Hiatus herniaControlsp Value
Nares to upper border LOS (cm) (IQR)
 FU44.5 (2.0)44.5 (5.0)0.92
 FS44.5 (3.0)45.5 (4.0)0.138
 PPU43.0 (3.5)43.25 (5.63)0.783
 PPS44.0 (3.5)44.0 (3.0)0.365
Upper border LOS to pH transition point (cm) (IQR)
 FU2.4 (4.0)3.15 (1.42)0.245
 FS0.50 (4.2)2.35 (3.08)0.048
 PPU1.1 (3.0)2.55 (4.73)0.022
 PPS−0.5 (4.2)2.30 (4.18)0.008
Upper border LOS to SCJ (cm) (IQR)
 FU2.46 (2.33)2.94 (1.31)0.046
 FS2.13 (1.89)3.22 (1.69)0.055
 PPU2.21 (2.24)3.10 (1.26)0.033
 PPS1.23 (2.07)2.53 (1.57)0.019
SCJ to pH transition point (cm) (IQR)
 FU0.54 (2.13)−0.18 (2.47)0.530
 FS0.22 (3.24)0.15 (1.90)0.638
 PPU−0.56 (2.77)−0.64 (5.44)0.249
 PPS−0.31 (3.47)0.54 (4.28)0.033
Proximal pressure peak to pH transition point (cm) (IQR)
 FU0.40 (3.70)0.90 (2.53)0.217
 FS−1.3 (5.18)0.20 (3.15)0.134
 PPU−0.60 (2.72)0.55 (4.48)0.039
 PPS−2.4 (4.03)0.7 (4.35)0.002
  • FS, fasting supine; FU, fasting upright; LOS, lower oesophageal sphincter; PPS, postprandial supine; PPU, postprandial upright; SCJ, squamocolumnar junction.