GlideScope®Video Laryngoscope for Difficult Intubation: Implication of the Size of Blade
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 23
- 主要终点
- The Differences in the Glottis View (C&L Grade) of Macintosh Laryngoscope and GVL Selected by Weight.
研究概览
简要总结
The investigators evaluated the usefulness of the Glidescope(GVL) compared with direct laryngoscopy in patients whose airway management are anticipated difficult (C&L grade ≥3) by comparing the laryngoscopic view. Also, the investigators compared the effectiveness of smaller-size blade of GVL (GVLs) with standard blade of GVL selected by patient's weight (GVLw) in the same patients.
详细描述
We assumed that smaller sized GVL can slide more angulated along the tongue, so the tip of a blade can be placed more anterior and cephalad. The angle of camera would be optimized by inserting the blade further with the blade tip directed toward the larynx. This optimization may be more remarkable with smaller blade because it can be inserted with rotation. Furthermore, the location and the angle of camera are different according to GVL blade size. Considering that patient with difficult airway has hypognathia and more cephalad larynx, it may be helpful with smaller sized GVL (GVLs) rather than GVL selected by weight (GVLw) for improvement of laryngoscopic view in patients with difficult airways. We hypothesized that GVLs can provide better laryngoscopic view than GVLw and DL in patient with difficult airway.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients whose C&L grade were over 3 in previous anesthetic records.
排除标准
- •Patients with pulmonary aspiration, increased intracranial pressure, and severe cardiovascular disease
研究组 & 干预措施
glottis view assessment
Glottis view assessment using Macintosh laryngoscope & GVL selected by weight & smaller sized GVL in single patient
干预措施: Macintosh laryngoscope (Device)
glottis view assessment
Glottis view assessment using Macintosh laryngoscope & GVL selected by weight & smaller sized GVL in single patient
干预措施: smaller sized GVL (Device)
glottis view assessment
Glottis view assessment using Macintosh laryngoscope & GVL selected by weight & smaller sized GVL in single patient
干预措施: GVL selected by weight (Device)
结局指标
主要结局
The Differences in the Glottis View (C&L Grade) of Macintosh Laryngoscope and GVL Selected by Weight.
时间窗: up to 1 day of surgery
Glottis view was scored using C\&L grade by Macintosh laryngoscope and GVL selected by weight, and compared each other. We used modified C\&L grade: grade 1, all or most of the glottic aperture was visible; grade 2a, posterior cords and cartilage visible; grade 2b, only posterior cartilage visible; grade 3a, epiglottis visible and can be lifted; grade 3b, epiglottis adherent to the posterior pharynx; and grade 4, the epiglottis could not be visualized. For the statistical analysis, the modified C\&L grade was converted to an ordinal scale; grade 1 to 1, grade 2a to 2, grade 2b to 3, grade 3a to 4, grade 3b to 5, and grade 4 to 6. Therefore, score range for the data reported in the table was between 1 and 6, with 1 representing best view and 6 representing no view.
次要结局
- The Differences in the Glottis View (C&L Grade) of GVL Selected by Weight and Smaller Sized GVL(up to 1day of surgery)
研究者
Jin-Tae Kim
professor
Seoul National University Hospital