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NCT Number: NCT05251194

The Effect of McGrath Video Laryngoscope on the Glottic View at Thyroid Surgery Position

For thyroid surgery, the special body position (thyroid surgical position) to exposure the patient's neck should be needed. For intraoperative neuromonitoring (IONM) in thyroid surgery, the tube should be placed at a specific position. A video laryngoscope can have advantages in tracheal intubation on thyroid surgical position for thyroid surgery. The purpose of the study is to investigate the effect of McGrath video laryngoscope on the glottic view when tracheal intubation is performed at the thyroid surgical position.

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Key information

Conditions

Thyroid Surgery

Age range

19 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Seoul Metropolitan Government Seoul National University Boramae Medical Center

Seoul, 07061, South Korea

About this study

For thyroid surgery, the special body position (thyroid surgical position) to exposure the patient's neck should be needed. Meanwhile, the tracheal tube can be moved in the trachea from the supine position to thyroid surgical position if tracheal intubation is performed at the supine position. For intraoperative neuromonitoring (IONM) in thyroid surgery, the electrode of the tracheal tube must be placed at a specific position, that is between the vocal cords. To perform initially tracheal intubation on the thyroid surgical position, therefore, can have advantage in terms of stability of tube position in the trachea without displacement by body position change. However, tracheal intubation on thyroid surgical position might be hard in terms of obtaining a good glottic view. It is well known that video laryngoscopes can improve the glottic view. Therefore, a video laryngoscope can have advantages in tracheal intubation on thyroid surgical position for thyroid surgery in obtaining the good glottic view as well as minimal displacement of the tracheal tube because there is no need to change the patient's position. The purpose of the study is to investigate the effect of McGrath video laryngoscope on the glottic view when tracheal intubation is performed at the thyroid surgical position.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • patients schedule to thyroid surgery

Exclusion criteria

  • disagree to participate
  • patients with weak teeth

Treatment and study plan

video laryngoscope at thyroid surgical position

Device

After induction of anesthesia and muscle relaxation, the patient will be positioned with a standard pillow to exposure neck for thyroid surgery (thyroid surgical position). Then, tracheal intubation will be performed with a McGrath video laryngoscope. During laryngoscopy with the McGrath video laryngoscope, the intubation practitioner will record the modified Cormack-Lehane grade and the percentage of glottic opening (POGO) score when it is assumed that a direct laryngoscope is used and when using the video laryngoscope, respectively.

Primary outcomes

  1. direct modified Cormack-Lehane grade without external manipulation

    Time frame: at tracheal intubation

    During laryngoscopy, the modified Cormack-Lehane grade without external manipulation as if the laryngoscope is assumed as a direct laryngoscope

  2. direct percentage of glottic opening score (POGO score: 0 - 100, 100 means full visualization of vocal cords) without external manipulation

    Time frame: at tracheal intubation

    During laryngoscopy, the percentage of glottic opening score (POGO score: 0 - 100, 100 means full visualization of vocal cords) without external manipulation as if the laryngoscope is assumed as a direct laryngoscope

  3. video modified Cormack-Lehane grade without external manipulation

    Time frame: at tracheal intubation

    During laryngoscopy, the modified Cormack-Lehane grade without external manipulation as if the laryngoscope is used as a video laryngoscope

  4. video percentage of glottic opening score (POGO score: 0 - 100, 100 means full visualization of vocal cords) without external manipulation

    Time frame: at tracheal intubation

    During laryngoscopy, the percentage of glottic opening score (POGO score: 0 - 100, 100 means full visualization of vocal cords) without external manipulation as if the laryngoscope is used as a video laryngoscope

  5. direct modified Cormack-Lehane grade with external manipulation

    Time frame: at tracheal intubation

    During laryngoscopy, the modified Cormack-Lehane grade with external manipulation as if the laryngoscope is assumed as a direct laryngoscope

  6. direct percentage of glottic opening score (POGO score: 0 - 100, 100 means full visualization of vocal cords) with external manipulation

    Time frame: at tracheal intubation

    During laryngoscopy, the percentage of glottic opening score (POGO score: 0 - 100, 100 means full visualization of vocal cords) with external manipulation as if the laryngoscope is assumed as a direct laryngoscope

  7. video modified Cormack-Lehane grade with external manipulation

    Time frame: at tracheal intubation

    During laryngoscopy, the modified Cormack-Lehane grade with external manipulation as if the laryngoscope is used as a video laryngoscope

  8. video percentage of glottic opening score (POGO score: 0 - 100, 100 means full visualization of vocal cords) with external manipulation

    Time frame: at tracheal intubation

    During laryngoscopy, the percentage of glottic opening score (POGO score: 0 - 100, 100 means full visualization of vocal cords) with external manipulation as if the laryngoscope is used as a video laryngoscope

Sponsors and collaborators

Lead sponsor

Seoul National University Hospital

Other

Collaborators

  • SMG-SNU Boramae Medical Center

Registry information

Official study title

The Effect of McGrath Video Laryngoscope on the Glottic View at Thyroid Surgery Position in Tracheal Intubation

Important dates

Study start
2022
Primary completion
2022
Study completion
2022
First posted
Feb 22, 2022
Registry last updated
Mar 30, 2023

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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