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Effect of Head Turn on Double-Lumen Tube Alignment

NCT07755722 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 35

Last updated 2026-08-10

No results posted yet for this study

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.

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

Interventions

PROCEDURE

Right Tracheal Displacement

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.

PROCEDURE

Right Head Turn Maneuver

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.

PROCEDURE

Left Head Turn Maneuver

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.

Sponsors & Collaborators

  • Taipei Veterans General Hospital, Taiwan

    lead OTHER_GOV

Principal Investigators

  • Chien-Kun Ting, MD, PhD · Taipei Veterans General Hospital, Taiwan

Study Design

Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-04-10
Primary Completion
2025-06-27
Completion
2025-06-27

Countries

  • Taiwan

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07755722 on ClinicalTrials.gov