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. 1992 Feb;106(2):169-74.

The effects of bolus flow on vertical pharyngeal pressure measurement in the pharyngoesophageal segment: clinical significance

F M McConnel  1 , T N Guffin Jr, D Cerenko, A S Ko
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  • PMID: 1738549

The effects of bolus flow on vertical pharyngeal pressure measurement in the pharyngoesophageal segment: clinical significance

F M McConnel et al. Otolaryngol Head Neck Surg. 1992 Feb.

Abstract

Measurement of pressures in the pharyngeal esophageal segment (P-E segment) is complicated by the vertical motion and by the rapidly changing pressures in the segment. The sensors move superiorly and inferiorly with respect to the P-E segment during the swallow. This study examines the validity of manofluorographic measurements taken in the P-E segment by using a catheter with sensors spaced at 1 cm intervals. Seven normal volunteers were tested. Measurements were similar using one sensor and using an average of five sensors. During the time of bolus passage, the P-E segment is open and the bolus itself equalizes pressures measured within the bolus.

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