Predictive Factors for Successful Videolaryngoscopic Intubation Without Stylet

June 27, 2025 updated by: Hyun-Kyu Yoon, Seoul National University Hospital

A Prospective Observational Study of Predictive Factors for Successful Videolaryngoscopic Intubation Without Stylet

The investigators aimed to evaluate the predictive factors for successful videolaryngoscopic intubation without stylet.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
226

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

Adult patients undergoing general anesthesia and endotracheal intubation

Description

Inclusion Criteria:

  • Patients aged 19 years and older
  • Patients undergoing general anesthesia for elective surgery and requiring endotracheal intubation

Exclusion Criteria:

  • Patients with suspected cervical spine injury
  • Patients requiring rapid sequence induction and intubation.
  • Patients with airway disorders
  • Body Mass Index > 35 kg/m2
  • Patients with a history of difficult intubation or, based on clinical judgment, anticipated difficult intubation

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

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
First-pass success rate of videolaryngoscopic intubation without stylet
Time Frame: From the start of endotracheal intubation to 120 seconds
An intubation attempt is defined as passing the laryngoscope blade between the patient's teeth. Duration of endotracheal intubation is defined from the moment the operator grasps the tube until the black line on the tube passes through the vocal cords
From the start of endotracheal intubation to 120 seconds

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Success rate of videolaryngoscopic intubation without stylet using BURP maneuver after failure of the first attempt
Time Frame: From the start of endotracheal intubation to 120 seconds
An intubation attempt is defined as passing the laryngoscope blade between the patient's teeth. Duration of endotracheal intubation is defined from the moment the operator grasps the tube until the black line on the tube passes through the vocal cords
From the start of endotracheal intubation to 120 seconds
Incidence of using a stylet for the success of videolaryngoscopic intubation after the failure of the second attempt using the BURP maneuver
Time Frame: From the start of endotracheal intubation to 120 seconds
An intubation attempt is defined as passing the laryngoscope blade between the patient's teeth. Duration of endotracheal intubation is defined from the moment the operator grasps the tube until the black line on the tube passes through the vocal cords
From the start of endotracheal intubation to 120 seconds
Incidence of successful endotracheal intubation after the failure of the third attempt using stylet
Time Frame: From the start of endotracheal intubation to 120 seconds
An intubation attempt is defined as passing the laryngoscope blade between the patient's teeth. Duration of endotracheal intubation is defined from the moment the operator grasps the tube until the black line on the tube passes through the vocal cords
From the start of endotracheal intubation to 120 seconds
Time to completion of endotracheal intubation
Time Frame: From the start of endotracheal intubation to 120 seconds
An intubation attempt is defined as passing the laryngoscope blade between the patient's teeth. Duration of endotracheal intubation is defined from the moment the operator grasps the tube until the black line on the tube passes through the vocal cords
From the start of endotracheal intubation to 120 seconds

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Seoul National University Hospital

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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 22, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 22, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 28, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 20, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 30, 2023

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 1, 2023

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 2, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 27, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2025

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2307-023-1443

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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