Head and Neck Positions for Endotracheal Intubation Using a Videolaryngoscope

Impact of Head and Neck Positions on Endotracheal Intubation Using a McGRATH MAC Video Laryngoscope

In this study, the investigators evaluate the effect of head positions (simple extension vs. sniffing position vs. head elevation) on endotracheal intubation using a videolaryngoscope.

Study Overview

• Status: Completed
• Conditions: Endotracheal Intubation
• Intervention / Treatment: Procedure: endotracheal intubation

• Study Type: Interventional
• Enrollment (Actual): 174
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Korea, Republic of
  • Seoul, Korea, Republic of, 156-707
    • Seoul Metropolitan Government Seoul National University Boramae Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 19 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Patients scheduled for general anesthesia

Exclusion Criteria:

• Limited neck extension
• Anatomical anomalies or history of surgery in the upper airway
• Weak teeth
• Risk of pulmonary aspiration

Study Plan

How is the study designed?

Design Details

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

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Simple extension; After induction of anesthesia, endotracheal intubation was performed in simple extension without a pillow using a McGrath MAC videolaryngoscope.	Procedure: endotracheal intubation; Endotracheal intubation is performed in simple head extension or sniffing position using a McGrath MAC videolaryngoscope.
Experimental: Head elevated position; After induction of anesthesia, endotracheal intubation was performed in a head elevated position with a pillow using a McGrath MAC videolaryngoscope.	Procedure: endotracheal intubation; Endotracheal intubation is performed in simple head extension or sniffing position using a McGrath MAC videolaryngoscope.
Experimental: Sniffing position; After induction of anesthesia, endotracheal intubation was performed in a sniffing position using a McGrath MAC videolaryngoscope.	Procedure: endotracheal intubation; Endotracheal intubation is performed in simple head extension or sniffing position using a McGrath MAC videolaryngoscope.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Ease of intubation	Ease of endotracheal intubation is assessed using the intubation difficulty scale. Intubation difficulty scale includes number of attempts, number of operators, number of alternative techniques, glottic opening and so on.	Procedure (During endotracheal intubation)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of glottic opening (POGO) score	POGO score is recorded during endotracheal intubation (0%: no visualization of glottic opening; 100%: entire visualization of the glottic opening).	Procedure (During endotracheal intubation)
Number of attempts	Number of attempts for endotracheal intubation is recorded.	Procedure (At the end of endotracheal intubation)
Intubation time	The time taken for endotracheal intubation is recorded.	Procedure (During endotracheal intubation)
Palatopharyngeal wall injury	Presence of palatopharyngeal wall injury is observed.	Procedure (During endotracheal intubation)
Lifting force for exposure of the glottis	Requirement for lifting force to expose the glottis is recorded during videolaryngoscopy	Procedure (During endotracheal intubation)
Laryngeal pressure for exposure of the glottis	Requirement for laryngeal force to expose the glottis is recorded during videolaryngoscopy	Procedure (During endotracheal intubation)
Lifting force for advancing an endotracheal tube into the larynx	Requirement for lifting force is recorded during the advancement of the endotracheal tube into the larynx.	Procedure (During endotracheal intubation)
Laryngeal pressure for advancing an endotracheal tube into the larynx.	Requirement for laryngeal pressure is recorded during the advancement of the endotracheal tube into the larynx.	Procedure (During endotracheal intubation)

Collaborators and Investigators

• Sponsor: SMG-SNU Boramae Medical Center
• Investigators: Principal Investigator: Jin-Young Hwang, PhD., SMG-SNU Boramae Medical Center

Study record dates

Study Major Dates

• Study Start (Actual): December 1, 2021
• Primary Completion (Actual): December 9, 2022
• Study Completion (Actual): December 9, 2022

Study Registration Dates

• First Submitted: November 11, 2021
• First Submitted That Met QC Criteria: November 19, 2021
• First Posted (Actual): November 22, 2021

Study Record Updates

• Last Update Posted (Estimate): December 29, 2022
• Last Update Submitted That Met QC Criteria: December 28, 2022
• Last Verified: December 1, 2022

More Information

Terms related to this study

• Other Study ID Numbers: 11-2021

Drug and device information, study documents

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