Combined Echocardiographic and MRI Assessment of Diastolic Function in Patients With Congenital Heart Disease
试验速览
- 阶段
- 2 期
- 入组人数
- 200
- 试验地点
- 2
- 主要终点
- Atrial Volumes
研究概览
简要总结
Diastolic function is poorly studied in children with congenital heart disease. This is mainly due to the lack of validated techniques. Cardiac MRI offers two advantages compared to echocardiography: 1. accurate measurements of ventricular volumes and mass; 2. tissue characterization. The main advantage of echocardiography is a better temporal resolution which allows the study of short events like early relaxation. Overall there is a lack of studies correlating different echocardiographic and MRI parameters of heart function in pediatric populations with congenital or acquired heart diseases. This study will address specific questions on specific groups of patients that might bring more insight into chamber interaction and cardiac function. This study hypothesizes the following:
- Atrial enlargement is a marker of chronic increase in filling pressures and 3D echo might be the best method for follow-up.
- Cardiac remodeling associated with chronic loading results in changes in diastolic properties related to changes in cardiac mass and volume. This is related to changes in cardiac mechanics influencing diastolic parameters. Especially the influence on twisting and untwisting will be studied.
- Regional myocardial fibrosis and scarring may account for regional systolic and diastolic dysfunction with possible prognostic impact
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Crossover
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 1 Day 至 18 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •All patients with tetralogy of Fallot post repair, transposition of great arteries after arterial switch operation, aortic valvulopathy (aortic stenosis and aortic regurgitation), coarctation of the aorta and cardiomyopathy, who are planned to undergo a cardiac MRI will be eligible.
- •Informed consent
排除标准
- •Lack of informed consent
- •Need for general anesthesia
- •Similar contraindications as for a clinical MRI study apply.
结局指标
主要结局
Atrial Volumes
时间窗: Day 1
Measure right and left atrial volumes by 2D and 3D echo and correlate the different echocardiographic measurements with MRI. This will allow identifying the most accurate measurement which can be used in clinical practice.
次要结局
- Assess Ventricular Volumes(Day 1)
- Myocardial Scarring(Day 1)
研究者
Luc Mertens
Staff Cardiologist
The Hospital for Sick Children