3D Sonographic Measurement of Volumetric Flow in Transjugular Intrahepatic Porto-Systemic Shunts
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 18
- 试验地点
- 2
- 主要终点
- Estimate portal blood flow within a transjugular portosystemic shunt
研究概览
简要总结
To determine if ultrasound measurements can accurately measure the blood pressure of flow across a stent that has been placed in a portal vein to reduce portal vein pressure known as Transjugular Intrahepatic Porto-Systemic shunts or TIPS.
详细描述
To determine if 3D ultrasound measurements can accurately measure the pressure of blood flow across a stent that has been placed in a portal vein. This has been done in order to reduce portal vein pressure. These shunts are known as Transjugular Intrahepatic Porto-Systemic shunts or TIPS.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Health Services Research
- 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
- •Male and female 18 years of age and older
- •Have an existing TIPS (Transjugular intrahepatic porto-systemic shunt)
- •Have an ultrasound ordered by your physician to evaluate your TIPS.
- •Able to read, understand and sign informed consent
排除标准
- •Under 18 years of age
- •Cannot be pregnant
结局指标
主要结局
Estimate portal blood flow within a transjugular portosystemic shunt
时间窗: 4 years
To determine the number of volumes to achieve a specified variance in the measurement and to determine the reproducibility of the volume flow measurements taken at multiple locations within the stent (3 locations with 3 measurements each for a total of 9 acquisitions). The physicians will measure volume flow rate three times at three different locations in the shunt (that being proximal, medial and distal) to determine the reproducibility of the flow estimate.
次要结局
未报告次要终点
研究者
Paula Novelli M.D.
Principal Investigator
University of Michigan