Difficult Intubation and Anthropometric Measurement

Trakya University, Faculty of Medicine, Department of Anatomy, Edirne, Turkey

OBJECTIVE: This study aimed to determine the sensitivity and specificity of various anatomic measurements alone or in combination in predicting difficult intubation. The investigators hypothesized that goniomastoid distance, thyrogonial distance and tongue movements are sensitive and specific tests for predicting difficult intubation MATERIALS AND METHODS: The investigators included the data of 170 patients (85 difficult intubation and 85 easy intubation) who underwent an abdominal surgery under general anesthesia. Patients in difficult intubation (n=85) and easy intubation (n=85) groups were matched by age, BMI, and gender. Intubation difficulty scale (IDS) scores were recorded. Upward and downward maximal protrusions of tongue (UMPT and DMPT, respectively) were evaluated in all patients. Anthropometric measurements were measured.

Study Overview

• Status: Completed
• Conditions: Difficult Intubation
• Intervention / Treatment: Other: difficult intubation; Other: easy intubation

Detailed Description

To define the tongue protrusion tests, anatomic landmarks and horizontal lines were used. The first horizontal line (lower target line) was passing through the midpoint of the distance between stomion to mentum (mandible height) and the second horizontal line (upper target line) was passing through the midpoint of the distance from subnasal to stomion (upper lip height). The horizontal lines were drawn with an erasable marker pen on the each patient's face. In the sitting position, patients were asked to make maximal tongue protrusion upward (UMPT) and downward (DMPT) in anatomical neutral position. The inability of the tip of the tongue to reach to the target line was scored "1" and ability of the tongue tip to reach or pass the target line was scored "2

• Study Type: Interventional
• Enrollment (Actual): 170
• Phase: Not Applicable

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 70 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

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 Plan

How is the study designed?

Design Details

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

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: difficult intubation; Intubation difficulty score >5	Other: difficult intubation; Goniomastoid Distance: The distance between gonion and mastoid while the neck is fully extension and the mouth maximally open. Thyrogonial Distance: The distance between thyroidea and gonion while the neck is fully extension and the mouth maximally open.; Other: easy intubation; Goniomastoid Distance: The distance between gonion and mastoid while the neck is fully extension and the mouth maximally open. Thyrogonial Distance: The distance between thyroidea and gonion while the neck is fully extension and the mouth maximally open.
Other: Easy intubation; Intubation difficulty score >5	Other: difficult intubation; Goniomastoid Distance: The distance between gonion and mastoid while the neck is fully extension and the mouth maximally open. Thyrogonial Distance: The distance between thyroidea and gonion while the neck is fully extension and the mouth maximally open.; Other: easy intubation; Goniomastoid Distance: The distance between gonion and mastoid while the neck is fully extension and the mouth maximally open. Thyrogonial Distance: The distance between thyroidea and gonion while the neck is fully extension and the mouth maximally open.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
thyrogonial distance	thyrogonial distance in centimeter (cm)The distance between thyroidea and gonion while the neck is fully extension and the mouth maximally open.	5 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Goniomastoid distance	goniomastoid distance in centimeter(cm) The distance between gonion and mastoid while the neck is fully extension and the mouth maximally open.	5 months

Collaborators and Investigators

• Sponsor: Trakya University

Study record dates

Study Major Dates

• Study Start: November 1, 2015
• Primary Completion (Actual): May 1, 2016
• Study Completion (Actual): June 1, 2016

Study Registration Dates

• First Submitted: June 14, 2016
• First Submitted That Met QC Criteria: June 22, 2016
• First Posted (Estimate): June 27, 2016

Study Record Updates

• Last Update Posted (Estimate): June 27, 2016
• Last Update Submitted That Met QC Criteria: June 22, 2016
• Last Verified: June 1, 2016

More Information

Terms related to this study

• Other Study ID Numbers: TrakyaUniver

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO