Arrhythmias & electrophysiology
Novel cardiac CT method for identifying the atrioventricular conduction axis by anatomic landmarks
Authors' conclusion
These findings further infer the intimate yet highly variable relationship between the conduction axis and aortic root.
Study context
- Population
- Patients with acquired aortic valve disease undergoing cardiac CT
- Participants
- 477 patients
- Outcome
- Reproducibility of predicting the location of the atrioventricular conduction axis by cardiac CT (standardized points A–C)
Methodological detailscardiac CT reproducibility study
- Cardiac CT reproducibility study
Main finding
As reported in the abstract
Measured CT landmarks of the conduction axis
- Distance aortic valve virtual basal ring to point A (mean ± SD, range)
- 9.5 ± 3.5 (0.3-20.1) mm
- Distance aortic valve virtual basal ring to point B (mean ± SD, range)
- 5.0 ± 2.6 (−1.7 to 15.9) mm
- Distance aortic valve virtual basal ring to point C (mean ± SD, range)
- 2.9 ± 2.5 (−5.2 to 12.0) mm
- Posterior deviation of membranous septum midpoint relative to right coronary–noncoronary commissure, median (IQR)
- −4.4 (−12.4 to +3.0) degrees
- Intraclass coefficients for intraobserver and interobserver variability, all points (excellent)
- ≥0.78
Original publication
Novel cardiac CT method for identifying the atrioventricular conduction axis by anatomic landmarks. Heart Rhythm. Published 18 December 2024. doi:10.
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