Abstract
A great many investigations of human pharyngoesophageal motility have been concerned with the motor activity induced by swallowing actions. The methods utilized in such investigations were mainly roentgenoscopic studies, electromyographic observations and graphic registration of contractions by intraluminal recording instruments (swallowing pressure).The method of measuring the swallowing pressure in the pharyngoesophagus has been used as an open-tubed kymographic system. Recently, a satisfactory method that is able to get accurate recording of pressures in the esophagus has become available. A miniature straingauge manometer using 4 diode transducers was developed for clinical measurement of the pharynuoesonhaueal intraluminal pressure.In this study, variations of pressure in the pharynx and cervical esophagus at swallowing were observed in a group of normal subjects and a group of patients with swallowing dis orders.
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