In Vivo Evaluation of Growth and Risk of Rupture of Dilated Ascending Aorta Using 4D Cardiac Magnetic Resonance
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 41
- 试验地点
- 2
- 主要终点
- Correlation between wall shear stress (WSS) and aorta diameter in patient with dilated ascending aorta
研究概览
简要总结
Ascending aorta aneurysmal disease is common and can be complicated by dissection or rupture. There is substantial variation in individual aneurysm progression: established risk factors for an accelerated aneurysm growth rate include initial size or localization, the presence of aortic valve disease, congenital bicuspid aortic valve or connective tissue disorders.
详细描述
Although there is an increased lifetime risk when the aortic diameter exceeds 6 cm, predicting aneurysm progression is nearly impossible and dissection and rupture also occur at diameters under 6 cm. The assessment of aortic hemodynamics and the presence of altered flow patterns, as well as distribution and changes in wall shear stress (WSS) and the oscillatory shear index (OSI), using 4D phase contrast cardiovascular magnetic resonance (CMR) may provide further insights in how aneurysms develop and in assessing the risk of dissection. The purpose of this study was to investigate in patients with dilated ascending aorta the flow patterns and vessel wall parameters in order to correlate these hemodynamics factors with changes in aorta size.
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 ≥ 18 years.
- •Supra-coronary aortic diameter measured by CT-scan or transthoracic/trans-esophageal echocardiography between 40 and 45 mm in case of presence of aortic valve disease, bicuspid aortic valve or connective tissue disease and between 40 and 50 mm in case of absence of aortic valve disease, bicuspid aortic valve disease or connective tissue.
- •Informed consent for participation in the study
排除标准
- •Contraindication to MRI
- •Patient's refusal to participate in the study and / or inability to express agreement or signing the informed consent.
结局指标
主要结局
Correlation between wall shear stress (WSS) and aorta diameter in patient with dilated ascending aorta
时间窗: From baseline to 1 year
Aorta diameter \[mm\] is assessed by 4D phase contrast cardiovascular magnetic resonance (CMR) Wall shear stress (WSS) in aorta \[Pa\] is assessed by 4D phase contrast cardiovascular magnetic resonance (CMR).
次要结局
- Aorta parameters associated with change in aorta diameter(From baseline to 1 year)