Effect of Jaw Thrust on Endotracheal Intubation Using a Videolaryngoscope

Effect of Jaw Thrust on Tracheal Tube Advancement During McGrath Videolaryngoscopic Intubation

This study is a single-center, prospective, randomized interventional clinical trial designed to evaluate the effect of the jaw thrust maneuver on glottic visualization, tracheal tube delivery, and overall intubation characteristics during videolaryngoscopic intubation under general anesthesia.

Study Overview

• Status: Not yet recruiting
• Conditions: Intubation
• Intervention / Treatment: Other: Videolaryngoscopy

• Study Type: Interventional
• Enrollment (Estimated): 132
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Jin-Young Hwang; Phone Number: 82-2-870-2518; Email: jy.hwang.an@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Adult patients undergoing elective surgery under general anesthesia

Exclusion Criteria:

• Predicted difficulty airway
• Structural anomalies or operation history in the upper airway, head and neck
• Risk of aspiration
• Weak teeth

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Conventional group; Videolaryngoscopy is performed without two-handed jaw thrust.	Other: Videolaryngoscopy; Videolaryngoscopy is performed.
Experimental: Jaw thrust group; Videolaryngoscopy is performed with two-handed jaw thrust.	Other: Videolaryngoscopy; Videolaryngoscopy is performed.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Need for additional maneuvers for tracheal tube advancement	Requirement for additional maneuvers to advance the endotracheal tube into the trachea after glottic entry will be recorded. Additional maneuvers are defined as any maneuver required to facilitate tracheal tube advancement after glottic entry, including tube rotation, tube withdrawal and re-advancement, blade repositioning, or external laryngeal manipulation.	During videolaryngoscopy using a McGrath videolaryngoscope

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Operator-rated difficulty of tracheal tube advancement	The operator rates the subjective difficulty of advancing the endotracheal tube into the trachea using a 10-cm visual analogue scale (0 = extremely easy, 10 = extremely difficult).	During videolaryngoscopy
POGO (percentage of glottic opening)	POGO (percentage of glottic opening, from 0% to 100%) is recorded.	During videolaryngoscopy
Intubation time	Intubation time is defined as time from laryngoscope insertion into the oral cavity to first EtCO₂ detection	During videolaryngoscopy
Occurrence of dental contact with the laryngoscope blade	Dental contact was defined as contact between the laryngoscope blade and the patient's teeth during videolaryngoscopy.	During videolaryngoscopy
Occurrence of palatopharyngeal mucosal injury.	Palatopharyngeal mucosal injury in the soft palate and oropharynx is evaluated using a video laryngoscope.	After completion of tracheal intubation
Need for lifting force or laryngeal pressure for laryngeal exposure	Need for lifting force or laryngeal pressure for laryngeal exposure is recorded.	During videolaryngoscopy
Need for lifting force or laryngeal pressure for advancement of the tube into the glottis	need for lifting force or laryngeal pressure for advancement of the tube into the glottis is recorded.	During videolaryngoscopy
modified intubation difficulty scale	The mIDS score is evaluated based on parameters such as the number of intubation attempts, number of operators, number of alternative intubation techniques, POGO score, requirement for lifting force or laryngeal pressure, and position of the vocal cords during intubation. The score ranges from 0 to 17. Higher scores mean difficult intubation.	During videolaryngoscopy

Collaborators and Investigators

• Sponsor: SMG-SNU Boramae Medical Center
• Investigators: Principal Investigator: Hwang, SMG-SNU Boramae Medical Center

Study record dates

Study Major Dates

• Study Start (Estimated): July 1, 2026
• Primary Completion (Estimated): August 30, 2026
• Study Completion (Estimated): August 30, 2026

Study Registration Dates

• First Submitted: May 29, 2026
• First Submitted That Met QC Criteria: May 29, 2026
• First Posted (Actual): June 4, 2026

Study Record Updates

• Last Update Posted (Actual): June 11, 2026
• Last Update Submitted That Met QC Criteria: June 9, 2026
• Last Verified: June 1, 2026

More Information

Terms related to this study

• Other Study ID Numbers: 202605

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No