Key result
Hybrid 3D-TEE matches MDCT in ~87% of valve sizing despite slightly underestimating annular diameter.
Why the study?
Semi-automated 3D-TEE underestimates aortic annular dimensions compared with MDCT, and manual techniques reduce bias but are operator dependent.
Does a hybrid 3D-TEE protocol improve aortic annulus sizing accuracy compared to semi-automated 3D-TEE and MDCT in TAVI patients?
Population
45 consecutive transcatheter aortic valve implantation patients
Comparison
Hybrid 3D-TEE vs multidetector computed tomography
Design
Single-center prospective cohort study
Authors
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Hybrid workflow may improve TEE annular accuracy versus semi-automated methods; leaves open prospective validation against MDCT and clinical outcomes.
Cohort (n=45)
Double-blind (operators blinded to each other's findings)
No
Does a hybrid 3D-TEE protocol improve aortic annulus sizing accuracy compared to semi-automated 3D-TEE and MDCT in TAVI patients?
Mean Difference: 0.83 (95% CI -0.24–1.91)
Absolute Event Rate: 22.3% vs 23.13%
p-value: p=0.001
A hybrid 3D-TEE protocol improves aortic annulus sizing accuracy and agreement in hypothetical prosthesis sizing compared to semi-automated 3D-TEE, closely correlating with MDCT.
AlGhazawy et al. (2026) conducted a cohort in Severe symptomatic aortic stenosis (n=45). Hybrid flexi-slice and semi-automated 3D-TEE vs. Multidetector computed tomography (MDCT) was evaluated on Aortic annular diameter (Mean difference 0.83 mm, 95% CI -0.24 to 1.91, p=0.001). Hybrid 3D-TEE systematically underestimated aortic annular diameter compared with MDCT (mean difference 0.83 mm) but achieved strong correlation and 87% agreement in hypothetical prosthesis sizing.
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