Respiratory Variability in Aortic Blood Velocity Measured by Suprasternal View as an Indicator of Fluid Responsiveness
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 62
- 试验地点
- 2
- 主要终点
- Percentage of cardiac flow variability
研究概览
简要总结
Respiratory changes in aortic blood velocity have been described as an indicator of fluid responsiveness when measured in the left ventricular outflow tract by trans esophageal echography. A threshold value of 12% allowed discrimination between responders and nonresponders with a sensitivity of 100% and a specificity of 89%. The suprasternal window is already used to measure cardiac output. The primary endpoint of this study is to determine the predictive value of the respiratory variability in aortic blood velocity measured by suprasternal view (∆VpicSS) as an indicator of fluid responsiveness. The secondary endpoint is to compare maximum velocity and velocity time integral measured by suprasternal and transthoracic view.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age more than 18 years
- •American Society of Anesthesiologists (ASA) score 1 or 2
- •General Anesthesia with mechanical ventilation
- •General Surgery
排除标准
- •Arrhythmia
- •Spontaneous breathing activity
- •Significant valvular disease
结局指标
主要结局
Percentage of cardiac flow variability
时间窗: At day 1(before surgery)
Percentage of cardiac flow variability between the 2 echographic measures. Echographic measures will be realized a first time before fluid challenge by suprasternal view and a second time after the fluid challenge by suprasternal view.
次要结局
- Comparison of percentage of cardiac flow variability between transthoracic and suprasternal views(At day 1(before surgery))