New Measures for Tracheobronchial Anatomy (ATB)

April 8, 2020 updated by: Jean Bussières, Laval University

Knowing the Right Upper Lobe Anatomy Allows for the Efficient Use of the Right-sided Double Lumen Endobronchial Tube

The right-sided double lumen endobronchial tube (R-DLT) is seldom. The principal cause of reticence for using the R-DLT are the difficult positioning of its lateral orifice in front of the origin of the right upper lobe (RUL) and the variability of the length of the right main stem bronchus (RMSB). Both the angle between the right upper lobe (RUL) bronchus origin and the RMSB and the length of the RMSB can be measured with high resolution CT-scan. These measures can be useful in clinical practice as they help to determine when a R-DLT should not be used or used with caution when facing a large variation of the angle of the RUL or a proximal implantation of a RUL bronchus .

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Since the introduction in the early '80s of the disposable double-lumen endobronchial tube (DLT), combined with the use of fiberoptic bronchoscopy (FOB) to confirm its positioning, some controversies have aroused; the main concern being the use of the right-sided double-lumen endobronchial tube (R-DLT). Alongside this persistent controversy, the anatomy of the right tracheo-bronchial tree seems to be the principal cause of reticence for using the R-DLT. Compared to the left main stem bronchus, this anatomy is relatively complex and can be divided in two issues: 1) the variable length of the right main-stem bronchus (RMSB) and consequently, the variable level of insertion of the right upper lobe (RUL) bronchus on the lateral part of the RMSB and 2) the alignment of the lateral orifice of the R-DLT in regard of the RUL bronchus origin. A as part of an extensive study of the tracheo-bronchial tree anatomy with high resolution CT-scan, we had the opportunity to measure differently the length of the main stem right bronchus and the angulation between the RUL bronchus origin and the lateral aspect of the right side main stem bronchus.

Study Type

Observational

Enrollment (Actual)

106

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

35 years to 85 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Evaluation of radiological consecutives thoracic CT-Scan reconstruction in a tertiary university hearth and lung institute. Patients had CT- scan for diagnosis or follow-up purposes

Description

Inclusion Criteria:

  • Aged 35 to 85 years old

Exclusion Criteria:

  • Unavailable weight and height
  • Tracheobronchial tree pathologies (e.g. : tracheomalacia, tracheobronchomegaly, endobronchial lesions, bronchiectasis, etc.)
  • Mediastinal pathologies inducing an extrinsic compression of the tracheobronchial tree.
  • Pulmonary pathologies inducing a deformation of the tracheobronchial tree (e.g.: retraction, important atelectasis, pulmonary fibrosis, chronic tuberculosis, etc.)
  • Patients that have had a treatment or surgery inducing a deformation of the tracheobronchial tree (e.g.: lobectomy, pneumonectomy, radiotherapy)
  • An important musculoskeletal deformity at the thoracic level
  • Low-quality CT scan exams (e.g.: significant kinetic artifacts where measurements should be taken

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Thoracic CT-Scan
Measurement of the length of the right main stem bronchus and of the right upper lobe bronchus antero-posterior angulation on consecutive thoracic CT-Scan reconstruction
Procedure: Measurement of the length of the right main stem bronchus
Measurement of the length of the right main stem bronchus on CT-Scan
Procedure: Measurement of the right upper lobe bronchus antero-posterior angulation
Measurement of the right upper lobe bronchus antero-posterior angulation on CT-Scan

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Measurement of the length of the right mainstem bronchus
Time Frame: 1 day
1 day
Measure of the right upper lobe bronchus antero-posterior angulation
Time Frame: 1 day
1 day

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Laval University

Investigators

  • Principal Investigator: Jean S. Bussières, M.D., Laval University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 1, 2012

Primary Completion (Actual)

December 1, 2016

Study Completion (Actual)

December 1, 2016

Study Registration Dates

First Submitted

February 12, 2015

First Submitted That Met QC Criteria

February 12, 2015

First Posted (Estimate)

February 19, 2015

Study Record Updates

Last Update Posted (Actual)

April 10, 2020

Last Update Submitted That Met QC Criteria

April 8, 2020

Last Verified

April 1, 2020

More Information

Terms related to this study

Other Study ID Numbers

  • IUCPQ-ATB2014

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Thoracic CT-scan

Clinical Trials on Measurement of the length of the right main stem bronchus

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in New Zealand

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe