RETROSPECTIVE COMPARISON OF AORTIC VALVE ANNULUS EVALUATION IN PATIENTS WITH SEVERE AORTIC STENOSIS IN PATIENTS PLANNED FOR TAVI PROCEDURE

Aim of study: To compare aortic annulus evaluation using echocardiography 2D or 3D reconstruction versus MDCT examination using dedicated 3 mensio software

Cohort and methods : We examined 55 patients (28 female, 27 male) aged 53-95 years, who was scheduled for TAVI procedure on behalf of severe aortic stenosis diagnosed before. All patients were interrogaded by TEE and most of them with TOE using i33 Philips echocardiographic equipment and with Siemens Somatom Definition Flash MDCT hardware. We compared results of aortic annulus diameter calculated from aortic annuli perimeter measurement and determination of aortic annular excentricity index defined as 1- Dmin/Dmax. Values > 0,25 were considered significant as a risk factor for residual postprocedural aortic regurgitation after TAVi.

Results: Aortic annulus diameter obtained from 2D echocardiography were on average 1,6 ± 1,98 mm smaller in comparisno to MDCT measurement using 3 mensio dedicataed software . Values of aortic annulus excentricity index were significantly underestimated whed we compared 3D echocardiographpy reconstruction on average by 0,13 ± 0,068 . Using 3D reconstruciton no severe excentricity index was reached – MDCT results were from this point of view different

Conclusion: 2D echocardiography undesetimated results of aortic annulus size in comparison with MDCT examination with dedicated, when software 3mensio was used. 3D TOE significantly underestimates annular excentricity index calculation in patients with severe aortic stenosis.