Victor Mauri1, Florian Deuschl2, Thomas Frohn1, Niklas Schofer2, Matthias Linder3, Elmar Kuhn4, Andreas Schaefer3, Volker Rudolph1, Navid Madershahian4, Lenard Conradi3, Tanja K Rudolph5, Ulrich Schäfer6. 1. Department of Cardiology, Heart Center, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany. 2. Department of General and Interventional Cardiology, University Heart Center Hamburg, Martinistraße 52, 20246, Hamburg, Germany. 3. Department for Cardiovascular Surgery, University Heart Center Hamburg, Hamburg, Germany. 4. Department of Cardiothoracic Surgery, Heart Center, University of Cologne, Cologne, Germany. 5. Department of Cardiology, Heart Center, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany. tanja.rudolph@uk-koeln.de. 6. Department of General and Interventional Cardiology, University Heart Center Hamburg, Martinistraße 52, 20246, Hamburg, Germany. u.schaefer@uke.de.
Abstract
AIMS: To identify predictors of paravalvular regurgitation (PVR) and permanent pacemaker implantation (PPI) following TAVR with a next-generation self-expanding device. METHODS AND RESULTS: Device landing zone (DLZ) calcification, angiographic implantation depth, and baseline and procedural characteristics were analyzed in 212 patients being treated with the ACURATE neo aortic bioprosthesis. PVR was none/trace in 57.1% and ≥ mild in 42.9% (37% mild, 6% moderate). DLZ calcification (705 (IQR 240-624) vs. 382 (IQR 240-624) mm3; P < 0.001) as well as absolute calcium asymmetry (233 ± 159 vs. 151 ± 151 mm3; P < 0.001) was significantly higher in patients with PVR ≥ mild. On multivariate analysis, calcification of the aortic valve cusps (AVC) > 410.6 mm3 was independently associated with PVR ≥ mild. PPI rate was 10.3% (n = 20). Patients with and without need for PPI had similar total DLZ calcium volume (740 (IQR 378-920) vs. 536 (IQR 315-822) mm3; P = 0.263), but exhibited different calcium distribution patterns: LVOT calcium > 41.4 mm3 in the sector below the left coronary cusp (LVOTLC) was associated with increased PPI risk (26.9 vs. 7.7%; P = 0.008). CONCLUSIONS: The quantity of AVC calcium predicts residual PVR. Multivariable analysis identified LVOTLC calcium, pre-existing RBBB, and age > 82.7 years as independent predictors of PPI. Based on these risk factors, a patient's individual PPI risk can be stratified ranging from 3.8 to 100%.
AIMS: To identify predictors of paravalvular regurgitation (PVR) and permanent pacemaker implantation (PPI) following TAVR with a next-generation self-expanding device. METHODS AND RESULTS: Device landing zone (DLZ) calcification, angiographic implantation depth, and baseline and procedural characteristics were analyzed in 212 patients being treated with the ACURATE neo aortic bioprosthesis. PVR was none/trace in 57.1% and ≥ mild in 42.9% (37% mild, 6% moderate). DLZ calcification (705 (IQR 240-624) vs. 382 (IQR 240-624) mm3; P < 0.001) as well as absolute calcium asymmetry (233 ± 159 vs. 151 ± 151 mm3; P < 0.001) was significantly higher in patients with PVR ≥ mild. On multivariate analysis, calcification of the aortic valve cusps (AVC) > 410.6 mm3 was independently associated with PVR ≥ mild. PPI rate was 10.3% (n = 20). Patients with and without need for PPI had similar total DLZ calcium volume (740 (IQR 378-920) vs. 536 (IQR 315-822) mm3; P = 0.263), but exhibited different calcium distribution patterns: LVOT calcium > 41.4 mm3 in the sector below the left coronary cusp (LVOTLC) was associated with increased PPI risk (26.9 vs. 7.7%; P = 0.008). CONCLUSIONS: The quantity of AVC calcium predicts residual PVR. Multivariable analysis identified LVOTLC calcium, pre-existing RBBB, and age > 82.7 years as independent predictors of PPI. Based on these risk factors, a patient's individual PPI risk can be stratified ranging from 3.8 to 100%.
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