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Predictors of Difficult Videolaryngoscopy

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03495596
Recruitment Status : Unknown
Verified April 2018 by Sevilay Kivrakoglu, Hacettepe University.
Recruitment status was:  Recruiting
First Posted : April 12, 2018
Last Update Posted : April 24, 2018
Information provided by (Responsible Party):
Sevilay Kivrakoglu, Hacettepe University

Brief Summary:
The primary goal of this study was to identify parameters affecting the failure of videolaryngoscopy in clinical practice; secondly, the incidence of videolaryngoscopy use and the most frequently used patient groups.

Condition or disease Intervention/treatment
Videolaryngoscopy Device: Videolaryngoscopy

Detailed Description:
Videolaryngoscopy is widely used in the management of patients with presumed difficult airway. It offers an improved laryngeal view compared with direct laryngoscopy and increases the likelihood of successful intubation in patients for whom direct laryngoscopy is anticipated to be difficult. It is among the most frequently preferred difficult airway devices due to its ease of use, portability and direct laryngoscopy resemblance. The use of videolaryngoscopy has been shown to improve intubation success in many cases associated with difficult intubation, such as morbid obesity, pregnancy, limitation of cervical motility, and poor mouth opening.

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Study Type : Observational
Estimated Enrollment : 2000 participants
Observational Model: Cohort
Time Perspective: Cross-Sectional
Official Title: Determining the Parameters Affecting the Failure of Videolaryngoscopy
Actual Study Start Date : January 17, 2018
Estimated Primary Completion Date : June 2020
Estimated Study Completion Date : October 2020

Group/Cohort Intervention/treatment
Videolaryngoscopy patients
The patients who were attempted to be intubated with videolaryngoscopy
Device: Videolaryngoscopy
Videolaryngoscopy device type

Primary Outcome Measures :
  1. Intubation success [ Time Frame: 15 minutes ]
    The success of intubation attempt with videolaryngoscopy (yes/no)

Secondary Outcome Measures :
  1. The reason of videolaryngoscopy [ Time Frame: 15 minutes ]
    Why videolaryngoscopy is preferred instead of standard direct laryngoscopy

  2. The type of videolaryngoscopy blade [ Time Frame: 15 minutes ]
    acute angled/macintosh/miller blade

  3. The rescue technique [ Time Frame: 30 minutes ]
    The rescue technique used for patients who could not be intubated with videolaryngoscopy

  4. Factors affecting success of videolaryngoscopy [ Time Frame: 30 minutes ]
    Mallampati, thyromental distance, neck movements, upper lip bite test, mouth opening

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   up to 95 Years   (Child, Adult, Older Adult)
Sexes Eligible for Study:   All
Sampling Method:   Non-Probability Sample
Study Population
Patients who will undergo surgery under general anesthesia will be followed in Hacettepe University Hospital's operating room. All patients aged 0-95 years who used videolaryngoscopy will be included in the study.

Inclusion Criteria:

  • All patients who used videolaryngoscopy for intubation

Exclusion Criteria:


Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03495596

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Contact: Sevilay Kivrakoglu, MD +903123051207
Contact: Aysun Ankay Yilbas, MD +903123051250

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Hacettepe University Hospital Recruiting
Ankara, Turkey, 06100
Contact: Meral Kanbak, MD    +903123051250   
Sponsors and Collaborators
Hacettepe University
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Study Director: Aysun Ankay Yilbas, MD Turkish Society of Anesthesiology and Reanimation
Principal Investigator: Sevilay Kivrakoglu, MD Turkish Society of Anesthesiology and Reanimation

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Responsible Party: Sevilay Kivrakoglu, HacettepeU, Hacettepe University Identifier: NCT03495596    
Other Study ID Numbers: Videolaryngoscopy
First Posted: April 12, 2018    Key Record Dates
Last Update Posted: April 24, 2018
Last Verified: April 2018

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No