December 19, 2024Structural HeartOpen Access

Aortic Valve and Left Ventricular Outflow Tract Calcium Distribution and Conduction Outcomes After Transcatheter Aortic Valve Replacement: A Systematic Review and Meta-Analysis

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Why the study?

Does aortic valve and LVOT calcium distribution predict post-TAVR conduction outcomes in patients undergoing TAVR?

Structured PICO

Does aortic valve and LVOT calcium distribution predict post-TAVR conduction outcomes in patients undergoing TAVR?

Population

Patients undergoing Transcatheter Aortic Valve Replacement (TAVR)

Intervention

Assessment of aortic valve and left ventricular outflow tract (LVOT) calcium distribution

Outcome

Post-TAVR conduction outcomes/abnormalitiessafety

The distribution of calcium, particularly in the LVOT NCC region, is a better predictor of post-TAVR conduction abnormalities than total calcium volume.

Limitations

Heterogeneity in methodology and implantation techniques between studies

Implication

Supports calcium distribution assessment in TAVR planning; heterogeneity leaves standardized risk stratification open.

Abstract

= 0.10). On qualitative review, LVOT calcium in the NCC region was the leaflet most commonly predictive of post-TAVR conduction outcomes. Total AVC, total LVOT calcium, and mitral annular calcium had no convincing association with post-TAVR conduction outcomes. The distribution of calcium rather than its total volume was associated with post-TAVR conduction abnormalities. Heterogeneity in methodology and implantation techniques between studies limits the clinical significance of these findings.