Stanciu C, Bennett J R
Thorax. 1974 Jul;29(4):459-62. doi: 10.1136/thx.29.4.459.
, , 459-462. Upper oesophageal sphincter yield pressure was measured in 26 normal subjects and in 69 patients with gastro-oesophageal reflux, using a system of continuously perfused catheters. There was no significant difference between the two groups. Perfusion of the oesophagus with hydrochloric acid produced no change in sphincter pressure. The resting sphincter pressure was not related to the degree of oesophagitis nor to the severity of reflux as measured by 15-hour pH recordings. There were significant differences in sphincter pressure recorded by the three catheters either when their orifices were set 5 cm apart longitudinally or when they were at the same level, equidistant around the circumference of a circle. This indicates that spatial orientation of catheter tips influences the pressure recorded from a sphincter.
……，459 - 462页。使用连续灌注导管系统，对26名正常受试者和69名胃食管反流患者测量了食管上括约肌屈服压力。两组之间无显著差异。用盐酸灌注食管不会引起括约肌压力变化。静息时的括约肌压力与食管炎程度以及通过15小时pH记录所测量的反流严重程度均无关。当三个导管的孔沿纵向相距5厘米设置或处于同一水平、围绕圆周等距分布时，所记录的括约肌压力存在显著差异。这表明导管尖端的空间方向会影响从括约肌记录到的压力。
