Adequate Bending Angle of a Lightwand

Adequate Bending Angle of a Lightwand for Tracheal Intubation

For tracheal intubation with a lightwand, adequate bending angle was not exactly investigated. The purpose of the study is compare three bending angles of lightwands for safe and efficient tracheal intubation.

Study Overview

• Status: Completed
• Conditions: Tracheal Intubation
• Intervention / Treatment: Procedure: bending angle of a lightwand

Detailed Description

Lightwands are very useful device for difficult airway management due to small moth opening, weak teeth, and cervical spine instability. Experienced clinicians use a lightwand while bending it adequately. However, there has been not previous studies to investigate the adequate angle to bend it.

This randomized controlled trial is to compare three angles (70, 80, and 90 degrees) as bending angle of lightwands for safe and efficient tracheal intubation in cases which require the use of lightwands.

• Study Type: Interventional
• Enrollment (Actual): 66
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Korea, Republic of
  • Seoul, Korea, Republic of, 07061
    • Seoul Metropolitan Government Seoul National University Boramae Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• patients who require use of a lightwand for tracheal tubes (i.e. small mouth opening, weak teeth, cervical spine instability)

Exclusion Criteria:

• patients who refuse to participate the study

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: DOUBLE

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: 70 degrees; During tracheal intubation using a lightwand, the tracheal tube combined with a lightwand will be bent by 70 degrees.	Procedure: bending angle of a lightwand; For tracheal intubation, investigators will bend the tracheal tube combined a lightwand by assigned angles (70, 80, or 90 degrees) for each patient. Next a practitioner will perform tracheal intubation with the bent tube.
EXPERIMENTAL: 80 degrees; During tracheal intubation using a lightwand, the tracheal tube combined with a lightwand will be bent by 80 degrees.	Procedure: bending angle of a lightwand; For tracheal intubation, investigators will bend the tracheal tube combined a lightwand by assigned angles (70, 80, or 90 degrees) for each patient. Next a practitioner will perform tracheal intubation with the bent tube.
EXPERIMENTAL: 90 degrees; During tracheal intubation using a lightwand, the tracheal tube combined with a lightwand will be bent by 90 degrees.	Procedure: bending angle of a lightwand; For tracheal intubation, investigators will bend the tracheal tube combined a lightwand by assigned angles (70, 80, or 90 degrees) for each patient. Next a practitioner will perform tracheal intubation with the bent tube.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
sore throat	After surgery, investigators evaluate VAS score for sore throat of the patients.	After surgery
Intubation time	from initiation of tracheal intubation with a lightwand after bending it to completion of tracheal intubation	Intraoperative

Collaborators and Investigators

• Sponsor: Seoul National University Hospital
• Collaborators: SMG-SNU Boramae Medical Center
• Investigators: Principal Investigator: Jung-Man Lee, M.D., PhD., SMG-SNU Boramae Medical Center

Publications and helpful links

General Publications

• Agro F, Hung OR, Cataldo R, Carassiti M, Gherardi S. Lightwand intubation using the Trachlight: a brief review of current knowledge. Can J Anaesth. 2001 Jun;48(6):592-9. doi: 10.1007/BF03016838.
• Chen J, Luo W, Wang E, Lu K. Optimal bent length of lightwand for intubation in adults: a randomized, prospective, comparative study. J Int Med Res. 2012;40(4):1519-31. doi: 10.1177/147323001204000432.
• Davis L, Cook-Sather SD, Schreiner MS. Lighted stylet tracheal intubation: a review. Anesth Analg. 2000 Mar;90(3):745-56. doi: 10.1097/00000539-200003000-00044. No abstract available.
• Kim J, Im KS, Lee JM, Ro J, Yoo KY, Kim JB. Relevance of radiological and clinical measurements in predicting difficult intubation using light wand (Surch-lite) in adult patients. J Int Med Res. 2016 Feb;44(1):136-46. doi: 10.1177/0300060515594193. Epub 2015 Dec 7.
• Szigeti CL, Baeuerle JJ, Mongan PD. Arytenoid dislocation with lighted stylet intubation: case report and retrospective review. Anesth Analg. 1994 Jan;78(1):185-6. doi: 10.1213/00000539-199401000-00034. No abstract available.
• Won D, Lee JM, Lee J, Hwang JY, Kim TK, Chang JE, Kim H, Ma S, Min SW. A pilot study comparing three bend angles for lighted stylet intubation. BMC Anesthesiol. 2021 May 17;21(1):148. doi: 10.1186/s12871-021-01369-8.

Study record dates

Study Major Dates

• Study Start (ACTUAL): November 14, 2018
• Primary Completion (ACTUAL): September 5, 2019
• Study Completion (ACTUAL): September 5, 2019

Study Registration Dates

• First Submitted: September 30, 2018
• First Submitted That Met QC Criteria: September 30, 2018
• First Posted (ACTUAL): October 2, 2018

Study Record Updates

• Last Update Posted (ACTUAL): October 5, 2020
• Last Update Submitted That Met QC Criteria: October 1, 2020
• Last Verified: October 1, 2020

More Information

Terms related to this study

• Keywords: Tracheal Intubation; Lightwand
• Additional Relevant MeSH Terms: Wounds and Injuries; Barotrauma; Decompression Sickness
• Other Study ID Numbers: 30-2018-44

Drug and device information, study documents

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