Haemodynamics and Function of the Atria in Congenital Heart Disease by Cardiovascular Magnetic Resonance
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About
The purpose of this study is to determine whether patients with repaired congenital heart disease show differences in size or function of their heart atria compared to normal controls and depending on the nature of their heart disease.
Full description
Atrial function is important for good ventricular filling and function. In patients with impaired cardiac function, atrial contraction is even more important. So far, the size and function of the atria have been assessed two-dimensionally by angiography and by echocardiography. However, these do not allow exact characterization of the volumetric changes of the atria during the cardiac cycle. Recently, cardiac magnetic resonance (CMR) has been used to assess size and function of the left atrium in adults. Little data are available about function and volume of the atria in children and the role of the atria in congenital heart disease (CHD).
The study will recruit patients with CHD (n=40) and normal controls (n=10). The patient group will be composed by patients suffering from the following conditions: coarctation of the aorta (n=10), tetralogy of Fallot (n=10), transposition of the great arteries after atrial switch (Senning procedure) (n=10), transposition of the great arteries after arterial switch operation (n=10).
The study consists of measurements of sizes and function of the right and the left atrium, respectively, by examining three-dimensional volume changes across the heart cycle, and of phase contrast measurements of blood flow across the valves of the heart.
Enrollment
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Inclusion criteria
- Ability to perform repetitive breath holds of 10-15 seconds each
- Written informed consent of the patients or their legal guardians
Exclusion criteria
- Patients requiring general anaesthesia
- Residual cardiac findings which might potentially influence the size and function of the atria
Trial design
22 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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