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Experimental Study on Function of the Upper Esophageal Sphincter After Radical Operation for Esophageal Cancer

  • Yosuke Fukunaga
  • Masayuki Higashino
  • Harushi Osugi
  • Noriaki Maekawa
  • Taigo Tokuhara
  • Shinya Tanimura
  • Hiroaki Kinoshita
Conference paper

Abstract

The upper esophageal sphincter (UES), located between the esophagus and the pharynx, provides a barrier against esophagopharyngeal reflux and subsequent aspiration of intraesophageal contents such as food or digestive juices. This consists of the cricopharyngeus muscle and the upper part of esophageal circular muscle. The UES is presented as a high pressure zone manometrically, with the pressure (UESP) higher than pharyngeal or esophageal pressure, i.e., around 39mmHg as reported by Tokuhara et al. [1], and the length of this high pressure zone is about 2–4 cm.

Keywords

Esophageal Cancer Recurrent Laryngeal Nerve Cervical Esophagus Esophageal Pressure High Pressure Zone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Tokuhara T, Higashino M, Osugi H, Maekawa N, Tanimura S, Fukunaga Y, Kinoshita H (1992) Clinical study on responses of the upper esophageal sphincter after subtotal esophagectomy for esophageal cancer. Jpn J Surg 93: 578–588Google Scholar
  2. 2.
    Freiman JM, El-Sharkawy TY, Diamant NE (1981) Effect of bilateral vagosympathetic nerve blockade on response of the dog upper esophageal sphincter ( UES) to intraesophgeal inflation and acid. Gastroenterology 81: 78–84PubMedGoogle Scholar

Copyright information

© Springer-Verlag Tokyo 1993

Authors and Affiliations

  • Yosuke Fukunaga
  • Masayuki Higashino
  • Harushi Osugi
  • Noriaki Maekawa
  • Taigo Tokuhara
  • Shinya Tanimura
  • Hiroaki Kinoshita
    • 1
  1. 1.Second Department of SurgeryOsaka City University Medical SchoolAbeno-ku, Osaka, 545Japan

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