Assessment of Facial Measurements, the Length of Mouth Corner-mandible Angle and Incisors-mandible Angle, for Determining the Proper Sizes of Oropharyngeal Airway

The purpose of this study is to assess the facial measurements for determining the proper sizes of oropharyngeal airway. Investigators hypothesized that the length between incisors and mandible angle is more appropriate to estimate the size of oropharyngeal airway compared with the length between mouth corner and mandible angle.

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Key information

Conditions

General Anesthesia Pathologic Processes Pathological Conditions, Signs and Symptoms Respiration Disorders Respiratory Aspiration Respiratory Tract Diseases

Age range

20 year–80 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Severance Hospital

Seoul, 120-752, 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 surgery that requires general anesthesia

Exclusion criteria

anticipated difficult intubation
patients without teeth or with loose teeth
cervical spine disease
upper airway disease
body mass index over 35 kg/m2
pregnancy

Treatment and study plan

the length between incisor and mandible angle

Device

the use of oropharyngeal airway (Guedel-type color coded oropharyngeal airway, Hudson RCI, Teleflex Medical, Research Triangle Park, NC) which size is the length between incisor and mandible angle

the length between mouth corner-mandible angle

Device

the use of oropharyngeal airway (Guedel-type color coded oropharyngeal airway, Hudson RCI, Teleflex Medical, Research Triangle Park, NC) of which size is the length between mouth corner and mandible angle

Primary outcomes

proper size of oropharyngeal airway

Time frame: up to 10 minutes after the start of anesthetic induction

The oropharyngeal airway will be inserted into the patient's mouth. Investigators will check the laryngeal view using fiberoptic bronchoscope and the adequacy of ventilation after the investigator ventilates the patient using the mask. If both the laryngeal view and ventilation are appropriate, the size of oropharyngeal airway will be considered as the proper size for the patient.

Sponsors and collaborators

Lead sponsor

Yonsei University

Other

Registry information

Important dates

Study start: 2013
Primary completion: 2014
Study completion: 2014
First posted: Sep 18, 2013
Registry last updated: Jul 31, 2015

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