Madsen T, Wallin L
Scand J Clin Lab Invest. 1981 Apr;41(2):203-8. doi: 10.3109/00365518109092035.
Long-term measurements have been made of peristaltic pressure variations 8 and 23 cm proximally to the gastro-oesophageal sphincter. The investigation was performed using perfused catheter systems and results of the 12-h measuring period were recorded on tape recorder. The peristaltic pressure variations were frequency analysed using a Fast Fourier Transform analyser. Nineteen normal subjects took part in the study. One subject was tested seven times. The investigation showed that the significant information regarding the pressure variations can be registered by recording systems with an upper frequency limit of at least 2 Hz. The pressure variations were built up more rapidly proximally in the organ than distally. Repeated investigations on a single subject showed that the intravariation lies within the intervariation in the subjects tested.
已对胃食管括约肌近端8厘米和23厘米处的蠕动压力变化进行了长期测量。研究使用灌注导管系统进行，12小时测量期的结果记录在磁带录音机上。使用快速傅里叶变换分析仪对蠕动压力变化进行频率分析。19名正常受试者参与了该研究。一名受试者接受了7次测试。研究表明，关于压力变化的重要信息可以由上限频率至少为2赫兹的记录系统记录下来。器官近端的压力变化比远端形成得更快。对单个受试者的重复研究表明，个体内部的变化处于所测试受试者的个体间变化范围内。
