Table 4

Comparison of parameters of the gastro-oesophageal junction high pressure zone and its response to abdominal compression (AC) and Müller manoeuvre of normal subjects, patients with hiatus hernia, and patients with a hernia after algebraic simulation of hiatus hernia reduction

Normal subjectsHiatus herniaSimulated reduction
Maximal pressure (mm Hg)28 (1.2)17 (1)7-150 27 (1.6)
Axial length (cm)4.0 (0.2)5.8 (0.4)7-150 2.9 (0.1)7-150
Length proximal to SCJ (cm)2.8 (0.2)2.6 (0.4)2.6 (0.3)
Length distal to SCJ (cm)1.1 (0.1)2.9 (0.1)7-150 0.5 (0.1)7-150
Percentage radial asymmetry34 (2)52 (2)7-150 38 (2)
Maximal pressure with AC (mm Hg)41 (1.2)26 (1.5)7-150 44 (1.1)
Maximal pressure with Müller manoeuvre (mm Hg)55 (1.3)37 (1.4)7-150 55 (1.6)
  • All pressures are referenced to atmospheric pressure. SCJ, squamocolumnar junction.

  • All values are mean (SEM).

  • 7-150 p<0.05 versus normal.