Head Position for Endotracheal Intubation (THHEIEIA)

The Degree of Neck Flexion Does Not Influence on the Laryngeal View and Discomfort During Endotracheal Intubation in Adult Patients

The purpose of this study is to investigate whether degree of neck flexion affect on laryngeal view and discomfort during endotracheal intubation in adult patients.

Study Overview

• Status: Completed
• Conditions: Intubation; Difficult
• Intervention / Treatment: Other: Neck flexion

Detailed Description

The neck flexion using a 8 to 10 cm head elevation has been suggested to align laryngeal, pharyngeal and oral axes and facilitate endotracheal intubation by direct laryngoscopy. There have been scarce clinical studies about the appropriate degree of neck flexion for endotracheal intubation. In the present study, the laryngeal view and physician's discomfort during endotracheal intubation were evaluated according to the two degrees of neck flexion(4 cm vs 8 cm) using a 4 or 8 cm height of pillows, respectively, in adult patients.

• Study Type: Interventional
• Enrollment (Actual): 50
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Korea, Republic of
  • Junggu
    • Seoul, Junggu, Korea, Republic of
      • National medical center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 90 years (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Elective operation time ≤2hrs
• American Society of Anesthesiologist, Physical Status 1 or 2
• age ; 18 - 90 years

Exclusion Criteria:

• patient has upper respiratory infection symptoms
• limited mouth opening
• teeth problems
• expecting difficult airway
• congenital heart disease
• patient has a possibility of aspiration pneumonia

Study Plan

How is the study designed?

Design Details

• Allocation: NA
• Interventional Model: SINGLE_GROUP
• Masking: SINGLE

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Degree of neck flextion; Two degrees of neck flexion were achieved using a 4 cm or 8 cm height of pillow	Other: Neck flexion; Patient's neck was flexed using a 4 cm or 8 cm height of pillow

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Laryngeal view as index of ease of insertion	Cormack Lehane grade during endotracheal intubation	one year

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Discomfort of anesthesiologist during endotracheal intubation	Anesthesiologist can feel difficulties in mouth opening and in insertion of laryngoscopic blade into oral cavity according to the degrees of neck flexion	one year

Collaborators and Investigators

• Sponsor: National Medical Center, Seoul
• Investigators: Study Director: Mija Yun, staff, National medical center

Study record dates

Study Major Dates

• Study Start: August 1, 2013
• Primary Completion (Actual): April 1, 2014
• Study Completion (Actual): April 1, 2014

Study Registration Dates

• First Submitted: October 12, 2014
• First Submitted That Met QC Criteria: April 15, 2015
• First Posted (Estimate): April 16, 2015

Study Record Updates

• Last Update Posted (Estimate): April 21, 2015
• Last Update Submitted That Met QC Criteria: April 18, 2015
• Last Verified: April 1, 2015

More Information

Terms related to this study

• Other Study ID Numbers: H-1312/037-002