Home|Journals|Articles by Year|Audio Abstracts
 

Original Research



Predictive value of upper lip bite test and ratio of height to thryromental distance for predicting difficult laryngoscopy in apparently normal Guajarati patients

Jigna Shah, Hiral Thummar, Vrajeshchandra Chhaya.




Abstract

Background: Maintaining a patent airway in anesthetized patients is the important responsibility of an anesthesiologist.

Objective: Study conducted with the objectives to evaluate sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), relative risk (RR), odd ratio (OR) and LR for various screening tests like upper lip bite test (ULBT), ratio of height to thyromental distance (RHTMD), inter incisor gap (IIG), modified Mallampatti Test (MMT), thyromental distance (TMD) and head and neck movement (HNM) in isolation.

Materials and Methods: In this prospective, single blinded observational study, 480 adult patients of either sex, ASA grade I and II were assessed and graded for ULBT, RHTMD, TMD, MMT, IIG, and HNM according to standard methods and association with the Cormack and Lehane grade.

Results: TMD, ULBT and RHTMD had highest sensitivity, specificity, positive predictive value, negative predictive value, likelihood ratio which was 46.67%, 95.45%, 63.64%, 91.3%, 4.94 and 46.67%, 92.05%, 50.0%, 91.01%, 5.13 and 40%, 90.91%, 42.85%, 89.89%, 4.45, respectively.

Conclusion: Out of all the 6 predictive tests evaluated, TMD, ULBT and RHTDM are the best predictive test for difficult laryngoscopy.

Key words: Difficult laryngoscope, TMD, ULBT, RHTMD, IIG






Full-text options


Share this Article


Online Article Submission
• ejmanager.com




ejPort - eJManager.com
Refer & Earn
JournalList
About BiblioMed
License Information
Terms & Conditions
Privacy Policy
Contact Us

The articles in Bibliomed are open access articles licensed under Creative Commons Attribution 4.0 International License (CC BY), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.