Impact of Basal Septal Bulge on Conduction Disturbance After Transcatheter Aortic Valve Replacement Using ACURATE neo/neo2

Figures

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  Figure 1. Study workflow. Abbreviations: CT = computed tomography; PPI = permanent pacemaker implantation; TAVR = transcatheter aortic valve replacement; THV = transcatheter heart valve.

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  Figure 2. CT measurements of basal septal bulge. The BSB was measured in the standard coronal view in the systolic phase (40% of the R-R interval). BSB thickness (red double-headed arrow) was defined as the distance between two lines (yellow dotted lines): a line on the interventricular septum (blue double-headed arrow) and another parallel line through the top of the BSB (blue dot). Abbreviations: CT = computed tomography; BSB = basal septal bulge.

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  Figure 3. Impact of BSB on new-onset CD. (A) The incidence of CD in large and small BSB groups. Patients with BSB ≥3 mm showed a significantly higher incidence of new-onset CD than those with BSB <3 mm. (B) Risk stratification of new-onset CD using baseline predictors. The risk of new-onset CD was evaluated according to the number of baseline factors in the groups with BSB ≥3 mm and BSB <3 mm. The incidence of new-onset CD significantly increased only in the group with BSB ≥3 mm. (C) Logistic regression for the relation between the thickness of BSB and CD. The thickness of the BSB was significantly associated with the incidence of new-onset CD. Abbreviations: BSB = basal septal bulge; CD = conduction disturbance; CRBBB = complete right bundle branch block; LBBB = left bundle branch block; MS = membranous septum; OR = odds ratio; PPI = permanent pacemaker implantation.