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Evaluation of pharyngeal swallowing pressure using high-resolution manometry during transoral surgery for oropharyngeal cancer

Published online by Cambridge University Press:  08 February 2021

K Fujiwara*
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Tottori University, Yonago, Japan
S Koyama
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Tottori University, Yonago, Japan
K Taira
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Tottori University, Yonago, Japan
K Kawamoto
Affiliation:
Department of Head, Neck, and Thyroid Surgery Center and Otorhinolaryngology, Kusatsu General Hospital, Japan
T Fukuhara
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Tottori University, Yonago, Japan
H Takeuchi
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Tottori University, Yonago, Japan
*
Author for correspondence: Dr Kazunori Fujiwara, Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Tottori University, 36-1, Nishicho, Yonago, 683-8504, Japan E-mail: kfujiwa@med.tottori-u.ac.jp Fax: +81 859 38 6629

Abstract

Background

Transoral robotic surgery is frequently described, driven by the desire to offer a less morbid alternative to chemoradiation. However, the objective evaluation of post-operative function has rarely been reported. Therefore, high-resolution manometry was used in this study to evaluate the impact of changes in peri-operative swallowing function on pharyngeal pressure events.

Methods

Ten patients with various stages of oropharyngeal cancer underwent transoral surgery. High-resolution manometry and videofluoroscopic swallow studies were performed before surgery and two months afterwards. The following parameters were obtained: velopharyngeal and mesopharyngeal post-deglutitive upper oesophageal sphincter pressures, velo-meso-hypopharyngeal contractile integral, upper oesophageal sphincter relaxation pressure, and pharyngeal velocity.

Results

There was no significant difference in pharyngeal pressure or contractile integral pre- versus post-operatively. However, pharyngeal velocity was significantly higher post-operatively than pre-operatively.

Conclusion

High-resolution manometry showed that transoral surgery in patients without pre-operative dysphagia preserved pharyngeal constriction. However, transoral surgery might produce scar formation in the pharynx, which could lead to narrowing of the pharynx.

Information

Type
Main Articles
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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