Key result
2D strain echocardiography shows no deformation on ASD occluders, enabling assessment of regional atrial function.
Why the study?
The value of two-dimensional strain in assessing regional myocardial function along the atrial wall after percutaneous ASD closure was not established.
Can two-dimensional strain echocardiography accurately assess regional atrial function without being influenced by global heart motion in patients after percutaneous ASD closure?
Observational (n=20)
Can two-dimensional strain echocardiography accurately assess regional atrial function without being influenced by global heart motion in patients after percutaneous ASD closure?
Two-dimensional strain echocardiography is a feasible, rapid, and reproducible tool for assessing regional atrial function that is not confounded by global heart motion or tethering.
May support motion-independent regional atrial assessment post-ASD closure; extends strain validation but remains hypothesis-generating.
AIMS: To assess the value of two-dimensional (2D) strain in assessing regional myocardial function along the atrial wall. METHODS AND RESULTS: We studied 20 patients late after successful percutaneous atrial septal defect (ASD) closure. The analysis was performed for atrial longitudinal peak systolic strain on the interatrial septum, in correspondence of the device, and on the lateral wall of the left atrium. The speckle tracking indexes demonstrated almost the absence of any deformation on the Amplatzer ASD occluder, a bulky non-contractile element, passively moved by global heart motion. This study in a simple clinical model demonstrates that 2D strain is not influenced by global heart motion and tethering from adjacent segments and can also be used to study the regional atrial function. Moreover, both acquisition and post-processing times of 2D strain were very short, and the reproducibility was very good. CONCLUSION: All these above-mentioned characteristics make the 2D strain a tool fully compatible with the clinical scanning, able to provide additional clinical information.
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Salvo et al. (2008) conducted an observational in Atrial septal defect post-percutaneous closure (n=20). Two-dimensional (2D) strain echocardiography was evaluated on Atrial longitudinal peak systolic strain. Two-dimensional strain echocardiography showed no deformation on the ASD occluder, demonstrating it is not influenced by global heart motion and can assess regional atrial function.
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