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Comparison of upper lip bite test and ratio of height to thyromental distance with other airway assessment tests for predicting difficult endotracheal intubation

BACKGROUND: Various anatomical measurements and noninvasive clinical tests, singly or in various combinations can be performed to predict difficult intubation. Upper lip bite test (ULBT) and ratio of height to thyromental distance (RHTMD) are claimed to have high predictability. Hence, we have condu...

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Autores principales: Badheka, Jigisha Prahladrai, Doshi, Pratik M., Vyas, Ashutosh M., Kacha, Nirav Jentilal, Parmar, Vandana S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4759991/
https://www.ncbi.nlm.nih.gov/pubmed/26955210
http://dx.doi.org/10.4103/0972-5229.173678
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author Badheka, Jigisha Prahladrai
Doshi, Pratik M.
Vyas, Ashutosh M.
Kacha, Nirav Jentilal
Parmar, Vandana S.
author_facet Badheka, Jigisha Prahladrai
Doshi, Pratik M.
Vyas, Ashutosh M.
Kacha, Nirav Jentilal
Parmar, Vandana S.
author_sort Badheka, Jigisha Prahladrai
collection PubMed
description BACKGROUND: Various anatomical measurements and noninvasive clinical tests, singly or in various combinations can be performed to predict difficult intubation. Upper lip bite test (ULBT) and ratio of height to thyromental distance (RHTMD) are claimed to have high predictability. Hence, we have conducted this study to compare the predictive value of ULBT and RHTMD with the following parameters: Mallampati grading, inter-incisor gap, thyromental distance, sternomental distance, head and neck movements, and horizontal length of mandible for predicting difficult intubation. MATERIALS AND METHODS: In this single blinded, prospective, observational study involving 170 adult patients of either sex belonging to American Society of Anesthesiologists physical Status I–III scheduled to undergo general anesthesia were recruited. All patients were subjected to the preoperative airway assessment and, the above parameters were recorded correlated with Cormack and Lehane grade and analyzed. The number of intubation attempts and use of intubation aids were also noted. RESULTS: ULBT and RHTMD had highest sensitivity (96.64%, 90.72%), specificity (82.35%, 80.39%), positive predictive value (92.74%, 91.53%), and negative predictive value (91.3%, 78.8%), respectively, compared to other parameters. While odds ratio and likelihood ratio >1 for all the tests. CONCLUSION: ULBT can be used as a simple bedside screening test for prediction of difficult intubation, but it should be combined with other airway assessment tests for better airway predictability. RHTMD can also be used as an acceptable alternative.
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spelling pubmed-47599912016-03-07 Comparison of upper lip bite test and ratio of height to thyromental distance with other airway assessment tests for predicting difficult endotracheal intubation Badheka, Jigisha Prahladrai Doshi, Pratik M. Vyas, Ashutosh M. Kacha, Nirav Jentilal Parmar, Vandana S. Indian J Crit Care Med Research Article BACKGROUND: Various anatomical measurements and noninvasive clinical tests, singly or in various combinations can be performed to predict difficult intubation. Upper lip bite test (ULBT) and ratio of height to thyromental distance (RHTMD) are claimed to have high predictability. Hence, we have conducted this study to compare the predictive value of ULBT and RHTMD with the following parameters: Mallampati grading, inter-incisor gap, thyromental distance, sternomental distance, head and neck movements, and horizontal length of mandible for predicting difficult intubation. MATERIALS AND METHODS: In this single blinded, prospective, observational study involving 170 adult patients of either sex belonging to American Society of Anesthesiologists physical Status I–III scheduled to undergo general anesthesia were recruited. All patients were subjected to the preoperative airway assessment and, the above parameters were recorded correlated with Cormack and Lehane grade and analyzed. The number of intubation attempts and use of intubation aids were also noted. RESULTS: ULBT and RHTMD had highest sensitivity (96.64%, 90.72%), specificity (82.35%, 80.39%), positive predictive value (92.74%, 91.53%), and negative predictive value (91.3%, 78.8%), respectively, compared to other parameters. While odds ratio and likelihood ratio >1 for all the tests. CONCLUSION: ULBT can be used as a simple bedside screening test for prediction of difficult intubation, but it should be combined with other airway assessment tests for better airway predictability. RHTMD can also be used as an acceptable alternative. Medknow Publications & Media Pvt Ltd 2016-01 /pmc/articles/PMC4759991/ /pubmed/26955210 http://dx.doi.org/10.4103/0972-5229.173678 Text en Copyright: © 2016 Indian Journal of Critical Care Medicine http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.
spellingShingle Research Article
Badheka, Jigisha Prahladrai
Doshi, Pratik M.
Vyas, Ashutosh M.
Kacha, Nirav Jentilal
Parmar, Vandana S.
Comparison of upper lip bite test and ratio of height to thyromental distance with other airway assessment tests for predicting difficult endotracheal intubation
title Comparison of upper lip bite test and ratio of height to thyromental distance with other airway assessment tests for predicting difficult endotracheal intubation
title_full Comparison of upper lip bite test and ratio of height to thyromental distance with other airway assessment tests for predicting difficult endotracheal intubation
title_fullStr Comparison of upper lip bite test and ratio of height to thyromental distance with other airway assessment tests for predicting difficult endotracheal intubation
title_full_unstemmed Comparison of upper lip bite test and ratio of height to thyromental distance with other airway assessment tests for predicting difficult endotracheal intubation
title_short Comparison of upper lip bite test and ratio of height to thyromental distance with other airway assessment tests for predicting difficult endotracheal intubation
title_sort comparison of upper lip bite test and ratio of height to thyromental distance with other airway assessment tests for predicting difficult endotracheal intubation
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4759991/
https://www.ncbi.nlm.nih.gov/pubmed/26955210
http://dx.doi.org/10.4103/0972-5229.173678
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