Double Blinded Randomized Control Trial on the Effects of Ultrasound Probe Position on Ultrasound-guided Nerve Blocks
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 62
- 试验地点
- 1
- 主要终点
- Time taken to perform a simulated interscalene block
研究概览
简要总结
Ultrasound has been used to guide a needle to inject local anesthetics around nerves. This is usually done in the same plane as the ultrasound beam in America and is known as an in-plane technique. When done correctly, the entire needle is visualized on the ultrasound screen as it approaches the nerves which are also seen on the same screen the entire time. The ultrasound probe can be held perpendicular or parallel to the shoulders of the person performing the in-plane technique. Our hypothesis is that holding the ultrasound probe perpendicular to the shoulder is superior to holding the probe parallel to the shoulder during an in-plane ultrasound guided regional anesthesia technique.
详细描述
Right handed volunteers with no prior exposure to ultrasound techniques are used in this study. They will be randomly assigned to be shown an instructional video on how to perform an in-plane ultrasound guided needling technique on a realistic simulation target. The two videos are identical with the exception of the probe position. A blinded assessor will time the volunteers performance behind a screen and note the duration in which the needle is not visualized in the ultrasound screen.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 55 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Healthy volunteers
- •Right handed
- •Aged 18 to 55
排除标准
- •Any person who has prior knowledge about ultrasound imaging or regional anesthesia
- •Any person who has prior experience with laparoscopy or biopsy
- •Any person who has problems with depth of field or simple hand eye co-ordination task
结局指标
主要结局
Time taken to perform a simulated interscalene block
时间窗: 1 hour
Time taken to perform a simulated interscalene block after watching an instructional video on ultrasound guided regional anesthesia on the simulated targets
次要结局
- Duration where the entire needle is not visualized when performing the simulated interscalene block(1 hour)