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• W4380785803 abstract "Background: Aortic valve calcification is a known risk factor for permanent pacemaker implantation (PPMI) following transcatheter aortic valve replacement (TAVR). However, the impact of characteristics of the calcium deposit on the aortic valve and annulus on post-TAVR PPMI has not been well defined. Hypothesis: Analysis of the characteristics of aortic valve calcification and its interactions with different types of TAVR could identify patients at a high risk for PPMI. Methods: This single-center retrospective study included 352 patients treated with TAVR for severe symptomatic aortic stenosis. One hundred ninety-three patients received self-expanding (SE) valves and 159 patients received balloon-expandable (BE) valves. Aortic valve calcification was evaluated using multi-slice computed tomography (MSCT) and 3mensio™ software prior to the TAVR. Total calcium volume (TCV) in the aortic valve was measured in the space ±10 mm of the aortic annulus. In addition, the largest calcium nodule diameter (LCND) was measured at the non-coronary cusp - right coronary cusp commissure, which is anatomically adjacent to the His bundle. TCV and LCND were compared among patients who required PPMI vs. those who did not. Results: PPMI was required post-TAVR in 69 subjects (25.9% in SE and 11.9% in BE, p<0.05). TCV was not associated with an increased risk of post-TAVR PPMI. However, the risk of PPMI increased incrementally in patients who received SE valves from LCND measured 1mm, 1-5 mm, 5-10 mm >10mm ( Figure ). There was no significant association between either TCV or LCND and PPMI in BE TAVR. Conclusions: PPMI was more common in SE than in BE. The size of LCND was associated an increased risk for SE. The preprocedural assessment of LCND may help the selection of appropriate types of TAVR (SE vs. BE) to reduce the risk for PPMI." @default.
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• W4380785803 date "2022-11-08" @default.
• W4380785803 modified "2023-10-12" @default.
• W4380785803 title "Abstract 14480: Importance of the Characteristics of Aortic Valve Calcification for Identifying Patients at a High Risk for Permanent Pacemaker Implantation After Different Types of Transcatheter Aortic Valve Replacement" @default.
• W4380785803 doi "https://doi.org/10.1161/circ.146.suppl_1.14480" @default.
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