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Manometric study of the upper esophageal sphincter before and after endoscopic management of Zenker's diverticulum
S Ishioka1, V N Felix, P Sakai
1Gastrointestinal Endoscopy Unit, University of Sao Paulo Medical School, Brazil.
Background/Aim:
Zenker's diverticulum treatment was done by endoscopic management of the elderly and debilitated patients without general anesthesia.
Materials/Methods:
With this technique, the septum between the diverticulum and the esophageal lumen is sectioned with a diathermic knife. Since the upper esophageal sphincter (UES) is certainly included in the mass sectioned, this accounts for the success of the procedure.
Results:
Manometric assessment of the UES was done in 5 patients before the endoscopic treatment. The mean pressure was 54.6 cm H2O and the mean length of 3 cm. A significant (p < 0.05) reduction in maximum pressure occurred postoperatively--mean 26.8 cm H2O. There was no significant variation in length of the UES.
Conclusion:
The maintenance of this basal pressure may be explained by the preservation of the circular muscle structure of the region, with sphincter-like characteristics.
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