CT Window Setting to Select Double-lumen Tube Size

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT01818102

Enrollment

228

Registered

2013-03-26

Start date

2013-02-28

Completion date

2014-02-28

Last updated

2015-05-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bronchial Cuff Volume at Air-tight Seal, Intracuff Cuff Pressure at Air-tighe Seal

Brief summary

The purpose of this study is to investigate the appropriate window setting of chest computed tomography to select a correct size of double-lumen endobronchial tube.

Interventions

DEVICEWidth 1000 HU/Level -450 HU

Double-lumen tube size is selected according to the internal diameter of the left mainstem bronchus measured in the chest computed tomography with width 1000 HU and level -450 HU.

DEVICEWidth 400 HU/Level 25 HU

Double-lumen tube size is selected according to the internal diameter of the left mainstem bronchus measured in the chest computed tomography with width 400 HU and level 25 HU.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

20 Years to 85 Years

Healthy volunteers

Inclusion criteria

* Patients undergoing thoracic surgery that require the placement of left-sided double-lumen tubes

Exclusion criteria

* Abnoraml anatomy of tracheobronchail tree * Intraluminal lesion in the left mainstem bronchus * Anticipated difficult intubation

Design outcomes

Primary

Measure	Time frame
Air-leak at deflation of bronchial cuff	An expected average of 10 min after double lumen tube intubation
Air-tight seal below resting volume of bronchial cuff	An expected average of 10 min after double lumen tube intubation

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026