Difficult Intubation and Tongue Protrusion

Not Applicable

Completed

• Conditions: Difficult Intubation, Tongue Mobility
• Interventions: Other: Protrude tongue maximally and upward (PTMU); Other: Protrude tongue maximally and downward (PTMD)

• Registration Number: NCT02679027
• Lead Sponsor: Trakya University

Brief Summary

Objectives: The aim of study is to determine the possible usage of tongue movements out of the mouth in the prediction of difficult intubation.

Method: Two hundred twenty three patients undergoing abdominal surgery with general anesthesia between 2014 and 2015 were enrolled in this study. Difficult intubation was evaluated using the intubation difficulty scale (IDS) score. All intubations were performed by anesthesiologist to eliminate the differences among the anesthesiologists' experiences. IDS score were evaluated by anesthesiologists who had no idea about the measurements of the tongue movements and performed laryngeal intubation in all patients.

To define the tongue movements, horizontal lines were used. Horizontal line were passing through the mid points of mandible and upper lip height. Patients were asked to protrude tongue maximally and upward (PTMU), to protrude tongue maximally and downward (PTMD) in anatomical neutral position which was sitting down on a chair.

Detailed Description

Not available

Study Timeline

• Study Start: 2014-01
• Primary Completion: 2015-11
• Study Completion: 2015-12
• Study First Submitted: 2016-01-27
• Study First Submitted QC: 2016-02-05
• Study First Posted: 2016-02-10
• Status Verified: 2016-08
• Last Update Submitted: 2016-08-15
• Last Update Posted: 2016-08-16

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 223

Inclusion Criteria

• Undergoing abdominal surgery with general anesthesia
• Able to sit

Exclusion Criteria

• Enable to sit,
• Patients had head or neck surgery,
• Patients with unstable cardiological and respiratory hemodynamic symptoms,
• Dental prosthesis

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Easy intubation	Protrude tongue maximally and downward (PTMD)	Intubation difficulty score \<5
Easy intubation	Protrude tongue maximally and upward (PTMU)	Intubation difficulty score \<5
Difficult intubation	Protrude tongue maximally and upward (PTMU)	Intubation difficulty score \>5
Difficult intubation	Protrude tongue maximally and downward (PTMD)	Intubation difficulty score \>5

Primary Outcome Measures

Name	Time	Method
Intubation difficulty scale	2 days	Intubation difficulty scale score includes 7 variables for difficult intubation. N1: The number of attempts for intubation (for the first attempt 0 point, for the other attempts 1 point each); N2: The number of anesthesiologist for the laryngoscopies (for the first attempt 0 point, for the other attempts 1 point each); N3: Alternative intubation techniques that are used (if not needed 0 point, change of blade type or using blind nasotracheal intubation 1 point each); N4: 1 point less than Cormack and Lehane Classification for defining glottic exposure; N5: The degree of force of lifting laryngoscopy (normal lifting 0 point, more force needed 1 point); N6: Using external laryngeal pressure 1 point; N7: The view of the vocal cords (abduction position 0 point, adduction position 1 point). A score of 0-4 defines easy intubation and an IDS score ≥5 defines difficult intubation