Table 4

Selected clinical and procedural characteristics and their association with LBBB following TAVI

Q1/referenceQ3/riskOR (95% CI)P value
Preprocedural QRS duration* (ms)921260.40 (0.18 to 0.87)0.01
Preprocedural RBBBNoYes0.27 (0.08 to 0.92)0.04
Aortic root rotation2.0519.251.03 (0.70 to 1.52)0.88
Aortic root qualificationCentral/counterclockwiseClockwise1.06 (0.53 to 2.12)0.86
Aortic root wedging37.7847.190.68 (0.43 to 1.08)0.10
Frontal aortic root tilt angle42.2053.730.92 (0.62 to 1.35)0.66
Left ventricle to aortic root angle: three-chamber plane122.45133.700.92 (0.60 to 1.42)0.71
Membranous septum height3.185.201.07 (0.72 to 1.58)0.75
Membranous septum width4.708.601.30 (0.82 to 2.06)0.27
Membranous septum area11.5034.711.31 (0.82 to 2.11)0.26
Inferior distance1.504.401.04 (0.66 to 1.65)0.87
Valve implantation depth3.837.401.82 (1.14 to 2.88)0.01
Δ Inferior distance to implantation depth−5.06−0.590.64 (0.41 to 1.01)0.06
Valve oversizing4.2319.551.24 (0.78 to 1.97)0.35
Self/mechanical-expandable versus balloon-expandable valvesBalloonSelf/mechanical2.12 (1.07 to 4.20)0.03
Valve type
 Boston ScientificEdwardsBoston Scientific3.53 (1.42 to 8.80)0.02
 MedtronicEdwardsMedtronic1.70 (0.80 to 3.58)
  • OR and 95% CI estimated from logistic regression. OR for a comparison of the IQR (Q3 vs Q1). P value for the Wald test for total model terms.

  • *Model includes restricted cubic spline term with three knots placed at the 10th, 50th and 90th percentiles.

  • LBBB, left bundle branch block;Q1, quartile 1 (25th percentile);Q3, quartile 3 (75th percentile);RBBB, right bundle branch block;TAVI, transcatheter aortic valve implantation; Inferior distance, virtual basal ring to muscular ventricular septum height; Δ inferior distance to implantation depth, difference between inferior distance and valve implantation depth.