Change in the Force-Summed Pressure Measurements of the Upper Esophageal Sphincter Prelaryngectomy and Postlaryngectomy

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Abstract
The pharyngoesophageal high pressure zone (PE-HPZ) was measured prelaryngectomy and postlaryngectomy with a new force-summing probe that accounts for sphincter pressure asymmetry. A total of 31 patients were studied six times each. Postoperatively, pressures dropped from 130 ± 24 mm Hg to 66 ± 9 mm Hg. After a standardized, intensive laryngectomy rehabilitation program, 12 of 19 postoperative patients acquired acceptable esophageal speech and 7 did not. Speakers and nonspeakers were found to have nearly identical PE-HPZ pressures (speakers = 70 ± 10 mm Hg, nonspeakers = 59 ± 18 mm Hg). Differences in sphincter length or relaxation likewise did not discriminate between these two groups. We conclude that PE-HPZ pressure is not a critical determinant of the acquisition of esophageal speech.

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