Double-Lumen Endotracheal Tube PlacementNCT07755722
Effect of Head Turn on Double-Lumen Tube Alignment
A study testing Right Tracheal Displacement, Right Head Turn Maneuver and Left Head Turn Maneuver in people with Double-Lumen Endotracheal Tube Placement, run by Taipei Veterans General Hospital, Taiwan at 1 site in Taiwan.
Trial summary
This study evaluated how simple external airway maneuvers affect the alignment of the left main bronchus during placement of a left-sided double-lumen endotracheal tube. Adults undergoing elective thoracic surgery requiring one-lung ventilation were enrolled. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Double-Lumen Endotracheal Tube Placement
- What is being tested?
- Right Tracheal Displacement, Right Head Turn Maneuver and Left Head Turn Maneuver
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 35 participants
- Where
- 1 siteTaiwan
- Study dates
- 10 Apr 2024to 27 Jun 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Patients scheduled for elective thoracic surgery requiring lung isolation with a left-sided double-lumen endotracheal tube
- American Society of Anesthesiologists (ASA) physical status I-III
- Provided written informed consent
Who cannot join
- Known severe cervical spine pathology or cervical instability
- History of cervical spine surgery
- Significant anatomical abnormalities of the upper airway
- Head or neck malignancy or obstructing airway neoplasm
- Presence of a tracheostomy
Trial locations and contacts
1 site in 1 country.
About this study
Official title: The Efficacy of Right Displacement of Trachea on Double Lumen Tube Intubation Under Fiberscope
This study evaluated how simple external airway maneuvers affect the alignment of the left main bronchus during placement of a left-sided double-lumen endotracheal tube. Adults undergoing elective thoracic surgery requiring one-lung ventilation were enrolled.
During double-lumen tube placement, a fiberoptic bronchoscope was used to continuously view the airway. Each participant underwent three sequential maneuvers: rightward displacement of the trachea, turning the head 45 degrees to the right, and turning the head 45 degrees to the left. The investigators measured how far the opening of the left main bronchus moved on the bronchoscopic image and whether it crossed the center of the image.
The purpose of the study was to determine how these maneuvers change airway alignment and whether they may help guide a left-sided double-lumen tube toward the left main bronchus.
- Conditions
- Double-Lumen Endotracheal Tube Placement
- Being tested
- Right Tracheal Displacement, Right Head Turn Maneuver, Left Head Turn Maneuver
- Keywords
- Double-Lumen Endotracheal Tube, Head Rotation, One-Lung Ventilation, Fiberoptic Bronchoscopy, Airway Management
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Right Tracheal DisplacementProcedure or surgery
A lateral force was applied externally at the left cricothyroid level to displace the trachea toward the right. The force was increased until maximal bronchoscopic displacement was observed. Peak applied force was recorded using a digital force gauge. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during the maneuver.
Right Head Turn ManeuverProcedure or surgery
The participant's head was rotated 45° to the right from the neutral position. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during the maneuver. The head was subsequently returned to the neutral position.
Left Head Turn ManeuverProcedure or surgery
The participant's head was rotated 45° to the left from the neutral position. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during the maneuver. The head was subsequently returned to the neutral position.
| Study group | Role | What they receive |
|---|---|---|
| Airway Maneuver Group | Experimental | Participants underwent three airway maneuvers in a predefined sequence during left-sided double-lumen tube placement: right tracheal displacement, 45° right head turn, and 45° left head turn. The airway and head position were returned to neutral between maneuvers. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during each maneuver. Receives: Procedure: Right Tracheal Displacement; Procedure: Right Head Turn Maneuver; Procedure: Left Head Turn Maneuver |
What is being measured
The primary outcome is the main question the study is designed to answer.
Midline Crossing of the Left Main Bronchus
Midline crossing was defined as a change in the position of the left main bronchus from the left side to the right side of the midline of the bronchoscopic image following each airway maneuver. The position of the left main bronchus was assessed using real-time fiberoptic bronchoscopy with the bronchoscope maintained 2 cm proximal to the carina. Midline crossing was recorded as a binary outcome (yes/no) for each maneuver.
Measured: During the airway maneuver, immediately after each maneuver was applied
Secondary outcomes (1)
Relative Horizontal Displacement of the Left Main Bronchus
Relative horizontal displacement was defined as the difference in the horizontal position of the left main bronchus before and during each airway maneuver, expressed as a percentage (Δ%) of the total width of the bronchoscopic image. The right edge of the left main bronchus was used as the reference point. Positive values indicated rightward displacement and negative values indicated leftward displacement. Measurements were obtained from bronchoscopic images with the bronchoscope maintained 2 cm proximal to the carina.
Measured: During the airway maneuver, immediately after each maneuver was applied
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Aug 2026
- Study start10 Apr 2024
- Primary completion27 Jun 2025
- Study completion27 Jun 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Double-Lumen Endotracheal Tube PlacementStudies of the same condition, open and under way.
- More trials run by Taipei Veterans General Hospital, TaiwanThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- All participants underwent the same three airway maneuvers in a predefined sequence: right tracheal displacement, 45° right head turn, and 45° left head turn. The airway and head position were returned to neutral before each subsequent maneuver. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during each maneuver.
- Masking
- None (open label)
- Enrolment
- 35 participants (actual)
Sponsor and investigators
- Lead sponsor
- Taipei Veterans General Hospital, Taiwan
- Sponsor type
- Other government
- Responsible party
- Sponsor
- Investigators
- Chien-Kun Ting, MD, PhD, Principal investigator, Taipei Veterans General Hospital, Taiwan
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07755722
- Sponsor's protocol ID
- 2023-12-003BCF
- Other IDs
- V115C-038
- Status last verified
- Aug 2026
- First submitted
- 4 Aug 2026
- Last updated
- 10 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: De-identified individual participant data underlying the results reported in the published article will be available upon reasonable request to the corresponding author, subject to institutional and ethical requirements.
Study at a glance
From the registry record, last updated by the sponsor on 10 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Efficacy of Right Displacement of Trachea on Double Lumen Tube Intubation Under Fiberscope
- ClinicalTrials.gov ID
- NCT07755722
- Acronym / sponsor ID
- 2023-12-003BCF
- Conditions
- Double-Lumen Endotracheal Tube Placement
- Keywords
- Double-Lumen Endotracheal Tube, Head Rotation, One-Lung Ventilation, Fiberoptic Bronchoscopy, Airway Management
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 35 participants (actual)
- Lead sponsor
- Taipei Veterans General Hospital, TaiwanOther government
- Study start
- 10 Apr 2024 (actual)
- Primary completion
- 27 Jun 2025 (actual)
- Study completion
- 27 Jun 2025 (actual)
- First posted
- 10 Aug 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study evaluated how simple external airway maneuvers affect the alignment of the left main bronchus during placement of a left-sided double-lumen endotracheal tube. Adults undergoing elective thoracic surgery requiring one-lung ventilation were enrolled.
During double-lumen tube placement, a fiberoptic bronchoscope was used to continuously view the airway. Each participant underwent three sequential maneuvers: rightward displacement of the trachea, turning the head 45 degrees to the right, and turning the head 45 degrees to the left. The investigators measured how far the opening of the left main bronchus moved on the bronchoscopic image and whether it crossed the center of the image.
The purpose of the study was to determine how these maneuvers change airway alignment and whether they may help guide a left-sided double-lumen tube toward the left main bronchus.
Study design
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- All participants underwent the same three airway maneuvers in a predefined sequence: right tracheal displacement, 45° right head turn, and 45° left head turn. The airway and head position were returned to neutral before each subsequent maneuver. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during each maneuver.
| Arm | Type | Receives |
|---|---|---|
| Airway Maneuver Group | Experimental | Procedure: Right Tracheal Displacement, Procedure: Right Head Turn Maneuver, Procedure: Left Head Turn ManeuverParticipants underwent three airway maneuvers in a predefined sequence during left-sided double-lumen tube placement: right tracheal displacement, 45° right head turn, and 45° left head turn. The airway and head position were returned to neutral between maneuvers. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during each maneuver. |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (3 listed)
- Patients scheduled for elective thoracic surgery requiring lung isolation with a left-sided double-lumen endotracheal tube
- American Society of Anesthesiologists (ASA) physical status I-III
- Provided written informed consent
Key exclusion criteria (5 listed)
- Known severe cervical spine pathology or cervical instability
- History of cervical spine surgery
- Significant anatomical abnormalities of the upper airway
- Head or neck malignancy or obstructing airway neoplasm
- Presence of a tracheostomy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Right Tracheal DisplacementA lateral force was applied externally at the left cricothyroid level to displace the trachea toward the right. The force was increased until maximal bronchoscopic displacement was observed. Peak applied force was recorded using a digital force gauge. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during the maneuver. | Procedure or surgery | Airway Maneuver Group |
| Right Head Turn ManeuverThe participant's head was rotated 45° to the right from the neutral position. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during the maneuver. The head was subsequently returned to the neutral position. | Procedure or surgery | Airway Maneuver Group |
| Left Head Turn ManeuverThe participant's head was rotated 45° to the left from the neutral position. Bronchoscopic alignment and horizontal displacement of the left main bronchus were assessed during the maneuver. The head was subsequently returned to the neutral position. | Procedure or surgery | Airway Maneuver Group |
Primary outcome
Midline Crossing of the Left Main Bronchus
Time frame: During the airway maneuver, immediately after each maneuver was applied
Midline crossing was defined as a change in the position of the left main bronchus from the left side to the right side of the midline of the bronchoscopic image following each airway maneuver. The position of the left main bronchus was assessed using real-time fiberoptic bronchoscopy with the bronchoscope maintained 2 cm proximal to the carina. Midline crossing was recorded as a binary outcome (yes/no) for each maneuver.
1 secondary outcome
Relative Horizontal Displacement of the Left Main Bronchus
Time frame: During the airway maneuver, immediately after each maneuver was applied
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Aug 2026.
- Individual participant dataSharing planned: Yes. De-identified individual participant data underlying the results reported in the published article will be available upon reasonable request to the corresponding author, subject to institutional and ethical requirements.
Related trials for Double-Lumen Endotracheal Tube Placement
RecruitingObservational study
Ultrasound vs. Auscultation and Fiberoptic Bronchoscopy for Double-Lumen Tube Placement
Thoracic Surgery With One-lung Ventilation
Not yet recruiting
Videolaryngoscopy vs Direct Laryngoscopy for Double Lumen Tube Lumen Tube Placement - A Multicentre Randomized-controlled Trial (VOLCANO Study)
One Lung Ventilation, Intubation Complication
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Chien-Kun Ting, MD, PhD principal investigator
Taipei Veterans General Hospital, Taiwan
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Right Tracheal Displacement, Right Head Turn Maneuver and Left Head Turn Maneuver in people with Double-Lumen Endotracheal Tube Placement, run by Taipei Veterans General Hospital, Taiwan at 1 site in Taiwan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 10 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Midline Crossing of the Left Main Bronchus (time frame: During the airway maneuver, immediately after each maneuver was applied). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Aug 2026.