Ultrasound Parameters to Predict Difficult Airway
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 209
- 试验地点
- 1
- 主要终点
- Anterior neck soft tissue thickness measured by ultrasound at hyoid bone
研究概览
简要总结
Ultrasound has become an essential tool for the daily work of any doctor, but in certain specialties such as Anaesthesiology, its use has greatly increased the safety offered to patients throughout the perioperative period, either to perform nerve blocks, for vascular access, intraoperative hemodynamic management or any other use that allows increasing quality of care.
The management of the upper airway and the diagnosis of pathological conditions are essential skills for any doctor especially for Anaesthesiologist, ER physician, or Intensive Care physician. Because an inadequate airway management continues to be an important contributor to patient mortality and morbidity, any tool that can improve it should be considered as an addition to conventional clinical evaluation.
Unfortunately, most of the clinical parameters that should allow us to assess a potential difficult airway, do not always lead us to an adequate prediction, that is why US(Ultrasound) is use as an emerging tool in many fields, is also gathering strength in this search for a definitive predictor parameter.
Ultrasound has many obvious advantages (safe,fast, repeatable, portable, widely available and gives dynamic images in real time).
Sonographic studies are operator-dependent and although the identification of basic structures could be acquired with only a few hours of training, but more complex studies require a learning curve of months or even years. The high frequency linear probe (5-14 MHz) is probably the most suitable for the airway because images are of superficial structures (within 0-5 cm below the skin surface).
The growing academic interest in the use of US to look for predictors of difficult airway is centred mainly on measurements at the level of pretracheal tissues.
But the greatest limitation of these studies is the disparity of the fat distribution that exists between different ethnic groups and and sexes, and the lack of standardization method in patient´s intubation conditions.
So, the investigator propose to assess different ultrasound windows at the level of pretracheal tissues such as independent predictors of Difficult Airway.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients (male or female) ASA I-III, aged between 18 and 90 years, undergoing scheduled surgery requiring orotracheal intubation. The signature of the informed consent is required authorizing its inclusion in the study.
排除标准
- •Obesity class II defined as a BMI greater than
- •Pregnant.
- •Cervical tumors, goiter or patients who have required radiotherapy at the cervical level
- •Abnormalities that condition anatomy alterations such as facial / cervical fractures.
- •Maxillofacial abnormalities
- •People who cannot give their consent.
结局指标
主要结局
Anterior neck soft tissue thickness measured by ultrasound at hyoid bone
时间窗: 5 minutes
Distance from skin to the midline of hyoid bone measure with lineal ultrasound probe
Anterior neck soft tissue thickness measured by ultrasound at thyrohyoid membrane
时间窗: 5 minutes
Distance from skin to midline of epiglottis measure with lineal ultrasound probe
Anterior neck soft tissue thickness measured by ultrasound at anterior commissure of vocal cords
时间窗: 5 minutes
Distance from skin to anterior commisure of vocal cords measure with lineal ultrasound probe
Anterior neck soft tissue thickness measured by ultrasound at thyrohyoid membrane. Preepiglottic Area.
时间窗: 5 minutes
Calculated with distance from skin to midline of epiglottis and 1 centimeterto left and right side.
次要结局
- Modified Mallampati Score(1 minute)
- Thyromental distance(1 minute)
- Sternomental distance(1 minute)
- Interincisor distance(1 minute)
- Upper Lip Bite Test(1 minute)
- neck circumference(1 minute)