Relationship of Cricoid With the Right and Left Bronchial Diameters in the Pediatric Population Using Three-dimensional Imaging.

Specific and objective guidelines for choosing endobronchial tube size for main-stem intubation in pediatric patients are lacking. The objective criteria for choosing an ETT size for OLV are likely to increase the safety and success. The primary aims of this study were to define the relationship between cricoid and mainstem bronchi (right and left) in children of various ages and to determine the effects of age, height and weight.

Study Overview

• Status: Completed
• Conditions: Intubation; Larynx; Oxygen

Detailed Description

Understanding the relationship between cricoid and mainstem bronchi can provide to be a useful adjunct for lung isolation in children. The relationship between cricoid dimensions and the dimensions of main-stem bronchi (right and left) have been studied using 2 dimensional CT images and video-bronchoscopic images. The present study defines the volume-based relationship between the right main-stem bronchus (RMSB), left main-stem bronchus (LMSB) and the cricoid ring based on 3 dimensional CT derived images.

Methods: The three dimensional CT images of 35 children, younger than 8 years, undergoing radiological evaluation unrelated to airway symptomatology were examined. The children were evaluated during spontaneous ventilation without airway devices either during natural sleep or with sedation. The 3-dimensional images of the airway column were evaluated at the level of cricoid, right mainstem bronchus and left main-stem bronchus, volumes were calculated and comparisons made between these levels. Univariate and multivariate regression analysis was used to determine whether one or more of the variables (age, gender, height, weight and cricoid) had a predictable relationship to the RMSB and the LMSB diameter.

• Study Type: Observational
• Enrollment (Actual): 35

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 1 month to 8 years (Child)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

The present study evaluated CT images of the chest of children less than 8 years of age. The database search of the electronic medical records identified 110 patients of which 40 patients qualified for the study.

Description

Inclusion Criteria:

• Children 1 month to 8 years of age

Exclusion Criteria:

• Patients with tracheostomy Tracheoesophageal fistula Presence of mediastinal mass Diaphragmatic hernia Preterm infants

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
comparison between cricoid and mainstem borncchi	1 month to 8 years

Collaborators and Investigators

• Sponsor: King Fahad Medical City

Study record dates

Study Major Dates

• Study Start: August 1, 2016
• Primary Completion (Actual): November 1, 2016
• Study Completion (Actual): November 1, 2016

Study Registration Dates

• First Submitted: January 21, 2017
• First Submitted That Met QC Criteria: January 21, 2017
• First Posted (Estimate): January 25, 2017

Study Record Updates

• Last Update Posted (Estimate): January 25, 2017
• Last Update Submitted That Met QC Criteria: January 21, 2017
• Last Verified: November 1, 2016

More Information

Terms related to this study

• Other Study ID Numbers: H-01-R-012, 17-010

Plan for Individual participant data (IPD)

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