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OpenTrials
Completed

NCT Number: NCT02158247

Determining the Depth of Endotracheal Tube Insertion

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

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Key information

Conditions

Endotracheal Intubation Individualized Depth of Endotracheal Intubation

Age range

20 year–90 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Department of Anesthesia and Pain Medicine, Daejeon St Mary's hospital

Daejeon, 301-723, South Korea

Who can participate

Healthy volunteers accepted: No

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

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

Treatment and study plan

Primary outcomes

  1. Comparison of Airway Length Between Male and Female

    Time frame: 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.

  2. Airway Length vs Height in Male

    Time frame: Endotracheal intubation time

  3. Airway Length vs Height in Female

    Time frame: Endotracheal intubation time

Secondary outcomes

  1. Comparison Between Conventional Method and Touch and Read Method for Risk Group of Male

    Time frame: 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.

  2. Comparison Between Conventional Method and Touch and Read Method for Normal Group of Male

    Time frame: 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.

  3. Comparison Between Conventional Method and Touch and Read Method for Risk Group of Female

    Time frame: 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.

  4. Comparison Between Conventional Method and Touch and Read Method for Normal Group of Female

    Time frame: 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.

Sponsors and collaborators

Lead sponsor

The Catholic University of Korea

Other

Registry information

Important dates

Study start
2012
Primary completion
2012
First posted
Jun 6, 2014
Registry last updated
Jul 22, 2014

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.

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