Maintaining the Head Extension by an Assistant Decreases Dental Contact

Maintaining the Head Extension by an Assistant Decreases Dental Contact Between Laryngoscope Blade and Maxillary Incisors During Direct Laryngoscopy

The purpose of this study is to determine whether the head extension by an assistant decreases dental contact between laryngoscope blade and maxillary incisors during direct laryngoscopy

Study Overview

• Status: Completed
• Conditions: Dental Contact During Direct Laryngoscopy
• Intervention / Treatment: Procedure: with assistant; Procedure: without assistant

• Study Type: Interventional
• Enrollment (Actual): 68
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Korea, Republic of
  • Seoul, Korea, Republic of
    • Seoul National University Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 80 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• patients undergoing surgery that requires general anesthesia

Exclusion Criteria:

• disease or injury of cervical spine
• dentoalveolar injury
• history of difficult intubation
• anatomical anomaly of face or airway

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: with assistant; head extension by an assistant during direct laryngoscopy	Procedure: with assistant; head extension by an assistant during direct laryngoscopy
Active Comparator: without assistant; without the help of an assistant during direct laryngoscopy	Procedure: without assistant; without head extension by an assistant during direct laryngoscopy

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
dental contact	dental contact between laryngoscope blade and maxillary incisors	up to 10 minutes

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
teeth distance	teeth distance between laryngoscope blade and maxillary incisors	up to 10 minutes

Collaborators and Investigators

• Sponsor: Seoul National University Hospital

Publications and helpful links

General Publications

• Kim HJ, Lee JM, Bahk JH. Assisted head extension minimizes the frequency of dental contact with laryngoscopic blade during tracheal intubation. Am J Emerg Med. 2013 Dec;31(12):1629-33. doi: 10.1016/j.ajem.2013.08.019. Epub 2013 Sep 14.

Study record dates

Study Major Dates

• Study Start: September 1, 2011
• Primary Completion (Actual): January 1, 2012
• Study Completion (Actual): May 1, 2012

Study Registration Dates

• First Submitted: August 30, 2011
• First Submitted That Met QC Criteria: August 30, 2011
• First Posted (Estimate): September 1, 2011

Study Record Updates

• Last Update Posted (Estimate): May 30, 2012
• Last Update Submitted That Met QC Criteria: May 28, 2012
• Last Verified: May 1, 2012

More Information

Terms related to this study

• Other Study ID Numbers: JHBahk_dental injury