Ultrasound Evaluation of Endotracheal Tube Depth for Proper Tube Placement in Different Patient Groups
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 100
- 试验地点
- 2
- 主要终点
- concomitant visualization of endotracheal tube cuff and aortic arch by ultrasound in situ
研究概览
简要总结
Correct positioning of the endotracheal tube (ETT) is crucial to ensure safe ventilation. To date, no test that can verify this right after intubation at the bedside exists. Indirect tests have false negative and positive results leading to complications or at least difficulties in performing effective ventilation of patients.
Bedside ultrasound could fill this need. Although bedside ultrasound may not be possible or useful in routine intubations, it may prove useful in difficult or questionable cases, where current clinical exams/techniques may not offer a reliable indication of endotracheal tube depth.
详细描述
Ultrasound is able to visualize some parts of the trachea and the ETT therein and although the actual structures of interest (ETT tip and carina) are difficult or impossible to visualize reliably (due to their air contents reflecting ultrasound beams) one can use surrogates:
The cuff of the ETT can be visualized as it is in- or deflated or it can be filled with an air-fluid(saline) mixture to delineate it inside the trachea.
For the same reason (air reflecting ultrasound beams) the carina is difficult to visualize and one can use the aortic arch which is positioned just anterior to it instead.
This study apart from determining feasibility of the method may produce enough data from ultrasound exams to develop/derive a more pre-cise algorithm than available today aiding in positioning the endotracheal tube in regards to anatomic-al landmarks (teeth, gums, lips) even without the use of ultrasound.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- — 至 85 Years（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •requiring anesthesia with an endotracheal tube placed for surgical or procedural purposes
- •elective or stable and awake for urgent or emergent surgeries
排除标准
- •known tracheal deformities
- •thoracic aortic aneurysm
- •neck/chest tissue thickness making U/S scanning difficult
- •severe trauma, head injuries or any procedures that require immediate surgery
结局指标
主要结局
concomitant visualization of endotracheal tube cuff and aortic arch by ultrasound in situ
时间窗: 15 minutes
次要结局
- distance between endotracheal tube cuff and aortic arch by ultrasound in situ(15 minutes)
研究者
Kai Schoenhage
Assistant Professor, Anesthesiology Director of Perioperative Services, Director of Liver Transplant Anesthesia, Department of Anesthesiology
University of Arizona