The Reliability and Validity of the Upper Lip Bite Test to Predict Difficult Laryngoscopy in Korean

July 22, 2013 updated by: Yonsei University

Anticipated difficulties at laryngoscopy give time to prepare alternative method and proper management.

Several methods to evaluate the anatomical structures has been used during preoperative period for airway assessment.

Evaluation methods are such as the Mallampati classification, mouth opening, thyromental distance and sternocostal distance.

the Upper Lip Bite test, evaluates the possibility of a patient cover the mucosa of the upper lip by the lower incisor.

The aim of this study was to assess the clinical usefulness of the Upper Lip Bite test(ULBT) in Korean compared to Modified Mallampati classification(MMT).

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

344

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

adult patients undergoing general anesthesia with orotracheal intubation

Description

Inclusion Criteria:

  • adult patients undergoing general anesthesia with orotracheal intubation

Exclusion Criteria:

  • patient who have facial anomaly , 2. patients who required a rapid sequence induction

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Ecologic or Community
  • Time Perspectives: Retrospective

Cohorts and Interventions

Group / Cohort
ULBT group
344 adult patients undergoing general anesthesia with orotracheal intubation

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cormack and Lehane grade
Time Frame: glottis view with direct laryngoscopy for 1 minute during anesthesia induction
When the patients undergoing general anesthesia with orotracheal intubation, after obtained glottis view with direct laryngoscopy, the performer assessed Cormack and Lehane grade. (It takes about 1 minutes). A grade 1 and 2 were rated as an easy laryngoscopy. Difficult laryngoscopy was defined as the inability to visualize the vocal cords, each includes Grades 3 and 4.
glottis view with direct laryngoscopy for 1 minute during anesthesia induction

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Yonsei University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 2009

Primary Completion (Actual)

February 1, 2009

Study Completion (Actual)

February 1, 2009

Study Registration Dates

First Submitted

July 17, 2013

First Submitted That Met QC Criteria

July 22, 2013

First Posted (Estimate)

July 25, 2013

Study Record Updates

Last Update Posted (Estimate)

July 25, 2013

Last Update Submitted That Met QC Criteria

July 22, 2013

Last Verified

July 1, 2013

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 4-2008-0583

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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