The aim of this clinical study is to learn more about the effects of TAVR-prosthesis positioning on hemodynamics and the coronary arteries.
The main questions it aims to answer are:
1. Does the cardiac magnetic resonance imaging and the echocardiography imaging provide an equivalent alternative to the computer tomography which is the state of the art in evaluating commissural alignment? 2. What effect does the position of the valve on the annular level have, especially its symmetrical and commissural position, on valvular and aortic blood flow characteristics? 3. What is the influence of symmetrical position and the presence of a commissural alignment on the coronary flow after transcatheter aortic valve replacement?
None
Any access route other than transfemoral.
Valve-in-valve procedures.
History of prior bioprosthetic valve implantation.
Presence of pacemaker, implantable cardioverter-defibrillator (ICD), or cardiac resynchronization therapy (CRT) system.
Single group
transthoracic echocardiography
Diagnostic testEach study patient will undergo transthoracic echocardiography, transesophageal echocardiography, and cardiac magnetic resonance imaging following transcatheter aortic valve replacement.
Presence of a commissural alignment
by transoesophageal echocardiograpy and cardiac magnetic resonance imaging
Presence of symmetrical position
by transoesophageal echocardiograpy and cardiac magnetic resonance imaging
Transvalvular gradients
by Transthoracic echocardiography
Effective orifice area (EOA)
by Transthoracic echocardiography
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