Abstract
Intraesophageal pressure measurements by the use of electrical pressure transducer was obtained in 60 healthy adult subjects.
1) In the resting state, high pressure zone were recorded on both ends of esophagus.
These indicate Pharyngoesophageal Junction (PEJ) and Gastroesophageal Junction (GET).
2) The upper sphincter (PEJ) relaxed 0.4 second after begening of a swallow, remained relaxation 0.8 second, and then closed.
3) The speed of peristaltic wave was not constant in various parts of esophagus, its slows down in 20cm-25cm from incisors and GEJ.
4) Abnormal peristalsis is often observed. There were non-peristaltic wave a peristalsis, repetitive non-peristaltic wave and others.
5) These abnormal waves is ovserved, generally, in lower two-third of esophagus and more frequently in older subjects than younger ones.
6) The lower esophageal sphincter (GEJ) opened 2.5 second after a swallow, remained negative phase 8.0 second, and then closed.
