Prediction of Optimal Laryngeal Mask Airway Cuff Volume From Parameters of Physical Examination of Head and Neck
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 170
- 试验地点
- 1
- 主要终点
- optimal laryngeal mask airway cuff volume
研究概览
简要总结
Overinflation of laryngeal mask airway cuff increase side effect like hoarseness, vocal cord paralysis, sorethroat. The investigators will study correlation between laryngeal mask airway cuff volume and pressure and physical examination of head and neck.
详细描述
Overinflation of laryngeal mask airway cuff can induce side effects like hoarseness, vocal cord paralysis, sorethroat. Some study revealed that 60cmH2O of intracuff pressure is maximum pressure which is not increase side effect.
The manufacturer recommends that the cuff is inflated with the minimum volume of air required to provide an effective seal(max volume - size 3, 20 ml; size 4, 30 ml; size 5, 40).
The investigators will measure anatomical structure (neck circumference, neck length, thyroid-mental distance, etc.) which can influence cuff volume and pressure and find correlation between cuff volume and physical figure measured.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Screening
- 盲法
- None
入排标准
- 年龄范围
- 19 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adult (age 19-65)
- •American Society of Anesthesiology Classification I-III
排除标准
- •cardiovascular disease, cerebrovascular disease, pulmonary disease
- •patient who have operation history for airway
- •patient who expected difficult intubation
- •patient who have risk of aspiration
研究组 & 干预措施
Classic laryngeal mask airway
single arm
干预措施: Classic laryngeal mask airway (Device)
结局指标
主要结局
optimal laryngeal mask airway cuff volume
时间窗: 20minutes
◦The investigators remove air until gas leak occured around the cuff under airway pressure 15cm H20, fresh gas flow 6liters/min. Check the volume and pressure just before leakage occured.
次要结局
未报告次要终点
研究者
Hye-Won Shin
Director, MD, PhD
Korea University Anam Hospital