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

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).

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Key information

Conditions

Orotracheal Intubation

Age range

20 year–80 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Kwandong university colloge of medicine

Seoul, South Korea

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Primary outcomes

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.

Sponsors and collaborators

Lead sponsor

Yonsei University

Other

Registry information

Important dates

Study start: 2009
Primary completion: 2009
Study completion: 2009
First posted: Jul 25, 2013
Registry last updated: Jul 25, 2013

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed