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Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Does the amplatzer septal occluder device alter ventricular contraction pattern? A ventricular motion analysis by MR
Heiko Stern1, Hansjörg Baurecht, Roger Luechinger
1Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München an der Technischen Universität München, Germany. stern@dhm.mhn.de
Journal of Magnetic Resonance Imaging : JMRI
|January 17, 2012
Summary
The Amplatzer occluder does not alter ventricular motion patterns after atrial septal defect (ASD) or persistent foramen ovale (PFO) closure. Changes observed are due to shifts in ventricular loading, not the device itself.
Area of Science:
- Cardiology
- Medical Devices
- Cardiac Imaging
Background:
- Atrial septal defects (ASD) and persistent foramen ovale (PFO) cause abnormal ventricular loading.
- The Amplatzer Septal Occluder is commonly used for defect closure.
Purpose of the Study:
- To evaluate the impact of the Amplatzer Septal Occluder on right ventricular (RV) and left ventricular (LV) motion patterns.
- To differentiate device effects from loading condition changes using cardiovascular magnetic resonance (CMR) tagging.
Main Methods:
- CMR and CMR tagging were used to assess RV and LV volumes, and myocardial deformation in 16 ASD and 9 PFO patients before and after Amplatzer occluder implantation.
- Quantified ventricular volumes, aortic/pulmonary artery flow (for Qp/Qs), circumferential strain, radial shortening, rotation, and torsion.
Main Results:
- In ASD patients, RV volumes decreased and LV volumes increased post-closure, with Qp/Qs normalizing. PFO patients showed no volume changes.
- ASD closure led to decreased RV strain, radial shortening, and RV/LV rotation. LV torsion remained unchanged.
- No significant changes in ventricular volumes or myocardial deformation were observed in PFO patients.
Conclusions:
- The Amplatzer occluder device does not intrinsically alter ventricular contraction patterns.
- Observed changes in ventricular volumes and myocardial deformation are attributed to altered ventricular loading conditions post-device closure.
