The Efficacy of Right Displacement of Trachea on Double Lumen Tube Intubation Under Fiberscope
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 35
- 试验地点
- 1
- 主要终点
- Midline Crossing of the Left Main Bronchus
研究概览
简要总结
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •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
排除标准
- •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
研究组 & 干预措施
Airway Maneuver Group
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.
干预措施: Right Tracheal Displacement (Procedure)
Airway Maneuver Group
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.
干预措施: Right Head Turn Maneuver (Procedure)
Airway Maneuver Group
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.
干预措施: Left Head Turn Maneuver (Procedure)
结局指标
主要结局
Midline Crossing of the Left Main Bronchus
时间窗: 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.
次要结局
- Relative Horizontal Displacement of the Left Main Bronchus(During the airway maneuver, immediately after each maneuver was applied)