The Role of Indirect Laryngoscopy, Clinical and Ultrasonographic Assessment in Prediction of Difficult Airway
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 140
- 试验地点
- 1
- 主要终点
- Thickness of tongue root in centimeters.
研究概览
简要总结
This study was designed to assess the success of indirect laryngoscopy and ultrasonographic measurements in the prediction of difficult airway. All patients were examined by indirect laryngoscopy and ultrasonography preoperatively and the predictive values for difficult airway of these methods were compared.
详细描述
Difficult airway is a condition that increases the patient's vital risk and leaves the anesthesia and surgical team in a difficult position. Failure to perform an adequate preoperative evaluation may result in the team being unprepared. Therefore, various methods have been investigated in the prediction of difficult airway from past to present. With the development of technology, imaging methods have become routine applications in clinical use. Ultrasonography and indirect laryngoscopy have been shown to be used in predicting difficult airway in the literature, but there is no study showing which is a better predictor.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 18 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Subject is operated in ear, nose and throat department.
- •Subject over the age of
- •Subject giving consent to participate in the study.
排除标准
- •Subject under the age of 18
- •Subject with a history of radiotherapy in the head and neck region,
- •Subject with facial deformity,
- •Subject whose neck movements have been restricted by previous trauma or surgery,
- •Subject has laryngeal disease
- •Previously operated subject with known airway assessment
- •Morbidly obese subject with BMI> 40
结局指标
主要结局
Thickness of tongue root in centimeters.
时间窗: Five minutes before induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and is experienced user of ultrasonography, measures thickness of tongue root.
Indirect Laryngoscopic Grade
时间窗: The day before surgery
The otolaryngologist,who is blind about ultrasonographic airway measurements of patients, performs indirect laryngoscopy and evaluates the laryngeal view.
Cormack-Lehane Classification
时间窗: Three minutes after induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and ultrasonographic airway measurements, performs intubation and evaluates the laryngeal view.
Epiglottis skin distance in centimeters.
时间窗: Five minutes before induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and is experienced user of ultrasonography, measures epiglottis to skin distance.
Hyoid bone-skin distance in centimeters.
时间窗: Five minutes before induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and is experienced user of ultrasonography, measures hyoid bone to skin distance.
Anterior commissure-skin distance in centimeters.
时间窗: Five minutes before induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and is experienced user of ultrasonography, measures anterior commissure to skin distance.
次要结局
- Thyromental distance in centimeters(The day before surgery)
- Mallampati classification(The day before surgery)
- Sternomental distance in centimeters.(The day before surgery)
- Neck circumference in centimeters.(The day before surgery)
- Body mass index (BMI)(The day before surgery)