ISSN: 2161-119X

Otolaryngology: Open Access
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  • Research Article   
  • Otolaryngol (Sunnyvale) 2015, Vol 5(4): 202
  • DOI: 10.4172/2161-119X.1000202

Documenting the Hypopharyngeal Environment of Patients Undergoing General Endotracheal Tube Anesthesia: A First Look at Intraoperative pH Characteristics

Elliot Regenbogen1*, Slawomir P. Oleszak2, Thomas Corrado3, A. Laurie W. Shroyer4, Elizabeth Vanner5, Jordan Goldstein6, Jordan Goldstein and Michael L. Pearl7
1Division of Otolaryngology Head and Neck Surgery, Stony Brook University Medical Center, , HSC T19-065, Stony Brook, NY 11794-8191, USA
2Division of Cardiothoracic Anesthesiology, Stony Brook University Medical Center, Stony Brook, NY 11794-8191, , USA
3Division of Neuroanesthesia/ENT Anesthesia, Stony Brook University Medical Center, , Stony Brook, NY 11794-8191, USA
4Department of Surgery, Stony Brook University, School of Medicine, Stony Brook, NY 11794-8191, USA
5Departments of Pathology and Bioinformatics, Stony Brook University School of Medicine, , Stony Brook, NY 11794-8691, USA
6Stony Brook University School of Medicine, Stony Brook, NY 11794-8191, , USA
7Division of Gynecologic Oncology, Stony Brook University Medical Center, , Stony Brook, NY 11794-8191, USA
*Corresponding Author : Elliot Regenbogen, Division of Otolaryngology Head and Neck Surgery, Stony Brook University Medical Center, HSC T19-065 Stony Brook, NY 11794- 8191, USA, Tel: 6314448410, Email: elliot.regenbogen@stonybrookmedicine.edu

Received Date: Jul 04, 2015 / Accepted Date: Jul 25, 2015 / Published Date: Jul 31, 2015

Abstract

Objectives: While laryngeal injuries are important and not infrequent following both short and extended endotracheal tube exposure, little detailed information is available regarding the hypopharyngeal environment during intubation. The objective of this pilot study was to explore a simple method of accurately documenting hypopharyngeal pH values in surgical patients undergoing endotracheal tube anesthesia and to report the findings.

Methods: Twenty volunteers were continuously monitored intra-operatively using a commercially available hypopharyngeal pH monitoring system. Demographics, pre- and postoperative voice and reflux self reported survey data were also collected.

Results: No complications associated with the pH monitoring system occurred. Median pH was 6.5 (range 6.0-7.0); median recorded time in minutes was 183.9 (range 130.7 – 323.5). 13/20 patients had pH>5.0 ≤ 5.5 events, for up to 113 minutes of monitored time; 2/20 patients had pH>4.0 ≤ 5.0 events, for up to 8 minutes of monitored time; 2/20 patients had pH ≤ 4.0 events, for up to 61 minutes of monitored time.

Conclusions: The hypopharyngeal pH test was used successfully to intra-operatively record hypopharyngeal pH variations. Extended pharyngeal exposures to low pH environments were commonly documented. No associations were found with patient survey scores. Future research appears warranted to expand this study, identify “at-risk” populations and to rigorously evaluate an expanded set of voice-related and lower airway clinical outcomes measures.

Keywords: Anesthesia; Laryngopharyngeal reflux; Laryngeal diseases; Hoarseness; Voice disorders; Esophageal pH monitoring

Citation: Regenbogen E, Oleszak SP, Corrado T, Shroyer ALW, Vanner E, et al. (2015) Documenting the Hypopharyngeal Environment of Patients Undergoing General Endotracheal Tube Anesthesia: A First Look at Intraoperative pH Characteristics. Otolaryngology 5: 202. Doi: 10.4172/2161-119X.1000202

Copyright: © 2015 Regenbogen E, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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