Determining the Depth of Endotracheal Tube Insertion

Completed

• Conditions: Endotracheal Intubation; Individualized Depth of Endotracheal Intubation

• Registration Number: NCT02158247
• Lead Sponsor: The Catholic University of Korea

Brief Summary

1. Airway length from the medial incisor to carina is divided into four segments ; the length from medial incisor to mouth angle, mouth angle to epiglottis, epiglottis to vocal cords and vocal cords to carina.

2. Determining the mean length of each segments with the direct laryngoscope, videolaryngoscope and fiberoptic bronchoscope at the time of endotracheal intubation.

3. Making a new formula to determine the proper individualized depth of intubation on the basis of the length of segments

4. Virtual experiment : comparing the new formula with conventional method of determining the depth of endotracheal intubation

Detailed Description

Not available

Study Timeline

• Study Start: 2012-01
• Primary Completion: 2012-07
• Status Verified: 2014-06
• Study First Submitted: 2014-06-05
• Study First Submitted QC: 2014-06-05
• Study First Posted: 2014-06-06
• Results First Submitted: 2014-06-23
• Results First Submitted QC: 2014-06-23
• Last Update Submitted: 2014-06-23
• Results First Posted: 2014-07-22
• Last Update Posted: 2014-07-22

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 176

Inclusion Criteria

• Patients who are scheduled to take general anesthesia with endotracheal intubation

Exclusion Criteria

• Patients undergoing general anesthesia with face mask ventilation or laryngeal mask airway

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Airway Length vs Height in Female	Endotracheal intubation time
Airway Length vs Height in Male	Endotracheal intubation time
Comparison of Airway Length Between Male and Female	Endotracheal intubation time	Airway length is defined the distance from medial incisor to carina. It is divided into four parts. It is medial incisor to mouth angle, mouth angle to epiglottis tip, epiglottis tip to vocal cords and vocal cords to carina.

Secondary Outcome Measures

Name	Time	Method
Comparison Between Conventional Method and Touch and Read Method for Risk Group of Female	Endotracheal intubation time	Risk group is defined as the patients whose airway length from medial incisor to carina is below 23cm.; Conventional method : depth of intubation is 21cm at the medial incisor for female.; Touch and read method : depth of intubation is calculated as follow : length from mouth angle to epiglottis tip plus 11.5cm for female.
Comparison Between Conventional Method and Touch and Read Method for Normal Group of Female	Endotracheal intubation time	Normal group is defined as the patients whose airway length from medial incisor to carina is over 23cm.; Conventional method : depth of intubation is 21cm at the medial incisor for female.; Touch and read method : depth of intubation is calculated as follow : length from mouth angle to epiglottis tip plus 11.5cm for female.
Comparison Between Conventional Method and Touch and Read Method for Risk Group of Male	Endotracheal intubation time	Normal group is defined as the patients whose airway length from medial incisor to carina is below 25cm.; Conventional method : depth of intubation is 23cm at the medial incisor for male.; Touch and read method : depth of intubation is calculated as follow : length from mouth angle to epiglottis tip plus 12.5cm for male.
Comparison Between Conventional Method and Touch and Read Method for Normal Group of Male	Endotracheal intubation time	Normal group is defined as the patients whose airway length from medial incisor to carina is over 25cm.; Conventional method : depth of intubation is 23cm at the medial incisor for male.; Touch and read method : depth of intubation is calculated as follow : length from mouth angle to epiglottis tip plus 12.5cm for male.

Trial Locations

Locations (1)

Department of Anesthesia and Pain Medicine, Daejeon St Mary's hospital; 🇰🇷 Daejeon, Korea, Republic of