Key result
Aortic valve neo-cuspidization is linked to larger valve areas and lower transvalvular gradients than mechanical AVR.
Why the study?
Aortic valve neo-cuspidization (Ozaki procedure) has emerged as an alternative to conventional aortic valve replacement, but short-term clinical and echocardiographic outcomes compared with mechanical AVR need evaluation.
Does aortic valve neo-cuspidization (Ozaki procedure) improve short-term echocardiographic outcomes compared with mechanical aortic valve replacement in adults with isolated aortic valve disease?
Observational (n=42)
Does aortic valve neo-cuspidization (Ozaki procedure) improve short-term echocardiographic outcomes compared with mechanical aortic valve replacement in adults with isolated aortic valve disease?
Aortic valve neo-cuspidization (AVNeo) demonstrates favorable early hemodynamic performance, including larger valve areas and lower pressure gradients, compared to mechanical aortic valve replacement.
AVNeo was associated with favorable short-term hemodynamics; hypothesis-generating and should not yet change practice.
Background: Aortic valve neo-cuspidization (AVNeo, Ozaki procedure) has emerged as an alternative to conventional aortic valve replacement, aiming to preserve native aortic root dynamics and improve postoperative hemodynamics. The replacement of the aortic valve presents challenges because both biological and mechanical prostheses have notable limitations. Aim: To evaluate the short-term clinical and echocardiographic outcomes of aortic valve neocuspidization (Ozaki procedure) compared with mechanical aortic valve replacement (AVR) in patients with isolated aortic valve disease. Patients and methods: This prospective comparative observational study included 42 adult patients with isolated aortic valve disease. 20 patients underwent AVNeo (Ozaki procedure) and 22 underwent mechanical aortic valve replacement. Echocardiographic assessment included aortic valve area (AVA), transvalvular pressure gradients, degree of aortic regurgitation, and left ventricular parameters. The operative technique was standardized for all patients according to the groups. The primary outcomes were change in the trans-aortic pressure gradients measured, change in the aortic valve area and presence and degree of aortic regurgitation by echocardiography. Results: Postoperatively, the AVNeo group demonstrated a significantly larger AVA and lower peak and mean transvalvular pressure gradients compared with the mechanical aortic valve replacement group. Significant improvement was observed in both groups regarding echocardiographic parameters. Mild aortic regurgitation was less frequent in the AVNeo group. Conclusion: Both procedures resulted in significant early echocardiographic improvement. AVNeo demonstrated favorable early hemodynamic performance compared with mechanical aortic valve replacement. Further studies with larger cohorts and longer follow-up are required to evaluate long-term durability and clinical outcomes.
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Elshabrawy et al. (2026) conducted an observational in Isolated aortic valve disease (n=42). Aortic valve neo-cuspidization (Ozaki procedure) vs. Mechanical aortic valve replacement was evaluated on Change in trans-aortic pressure gradients, change in aortic valve area, and presence and degree of aortic regurgitation. Aortic valve neo-cuspidization demonstrated significantly larger aortic valve areas and lower peak and mean transvalvular pressure gradients compared with mechanical aortic valve replacement.
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