Accuracy of Modified Mallampati Test over Other Parameters for Preoperative Prediction of Difficult Endotracheal Intubation
International Journal of Anesthesia and Clinical Medicine
Volume 8, Issue 1, June 2020, Pages: 1-5
Received: Aug. 19, 2019; Accepted: Nov. 12, 2019; Published: Feb. 19, 2020
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Authors
Venkateshamurthy Banavara Champa, Department of Anaesthesiology, Shivamogga Institute of Medical Sciences, Shivamogga, India
Venkappa Yashoda, Department of Anaesthesiology, Shivamogga Institute of Medical Sciences, Shivamogga, India
Nagarajarao Karnalli Gurudutta, Department of Anaesthesiology, Shivamogga Institute of Medical Sciences, Shivamogga, India
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Abstract
Difficult airway remains a potential problem for practicing anaesthesiologists. Modified mallampati test alone has low sensitivity and specificity. Preoperative assessment of the airway using a combination of simple tests will increase the sensitivity and specificity of prediction of difficult airway than using a single parameter alone. This study was done to compare the sensitivity, specificity and accuracy for preoperative prediction of difficult endotracheal intubation in adults undergoing elective surgeries using combination of Modified Mallampati test [MMT], Sternomental distance [SMD], Thyromental distance [TMD] and Neck mobility [NM] over MMT alone and to assess whether MMT alone or in combination with TMD, SMD and NM is a better predictor of difficult laryngoscopy. This is a prospective observational study. 100 patients undergoing elective surgeries under general anaesthesia were enrolled into two groups. Group 1 was the MMT group and Group 2 was the MMT, TMD, SMD & NM Group. Results were analysed using SPSS software Version 12 and STATA used for analysing the sensitivity, specificity, PPV, NPV and accuracy in each group. P value calculated using Chi Square test. Group 1 had lower sensitivity, specificity, PPV, NPV as well as Accuracy when compared with that of Group 2. The combination of the parameters yielded a greater accuracy in predicting the difficult intubation stressing the importance of assessing the evaluation of other parameters like TMD, SMD & NM along with MMD for successful prediction of a difficult endotracheal intubation. In conclusion the MMT alone in preoperative assessment of difficult laryngoscopy is less sensitive. The combination of MMT, TMD, SMD & NM is more sensitive as well as specific to predict a difficult intubation than using MMT alone in the pre-operative period.
Keywords
Cormack Lehane (C-L) Grading, Difficult Intubation, Modified Mallampatitest (MMT), Neck Mobility (NM), Sternomental Distance (SMD), Thyromental Distance (TMD)
To cite this article
Venkateshamurthy Banavara Champa, Venkappa Yashoda, Nagarajarao Karnalli Gurudutta, Accuracy of Modified Mallampati Test over Other Parameters for Preoperative Prediction of Difficult Endotracheal Intubation, International Journal of Anesthesia and Clinical Medicine. Special Issue: Anesthesia for Laparoscopic Surgery. Vol. 8, No. 1, 2020, pp. 1-5. doi: 10.11648/j.ijacm.20200801.11
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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