Prognosis of Paradoxical Low-Flow Low-Gradient Aortic Stenosis: A Severe, Non-critical Form, With Surgical Treatment Benefits.

To determine the risk of mortality and need for aortic valve replacement (AVR) in patients with low-flow low-gradient (LFLG) aortic stenosis (AS). A longitudinal multicentre study including consecutive patients with severe AS (aortic valve area [AVA] < 1.0 cm Of 1,391 patients, 147 (10.5%) had LFLG, 752 (54.1%) HG, and 492 (35.4%) NFLG. Echocardiographic parameters of the LFLG group showed similar AVA to the HG group but with less severity in the dimensionless index, calcification, and hypertrophy. The HG group required AVR earlier than NFLG ( Paradoxical LFLG AS affects 10.5% of severe AS, and has a lower need for AVR than the HG group and similar to the NFLG group, with no differences in mortality. AVR had a lower impact on LFLG AS compared with HG AS. Therefore, the findings of the present study showed LFLG AS to have an intermediate clinical risk profile between the HG and NFHG groups.

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Copyright © 2022 Galian-Gay, Escalona Silva, Teixidó-Turà, Casas, Ferrer-Sistach, Mitroi, Mingo, Monivas, Saura, Vidal, Trasca, Moral, Calvo, Castiñeira Busto, Sánchez, Gonzalez, Guzman, Mora, Arnau Vives, Peteiro, Bouzas, Mas-Stachurska, González-Alujas, Gutiérrez, Fernandez-Galera, Valente, Guala, Ruiz-Muñoz, Avilés, Palomares, Ferreira and Evangelista.

Déclaration de conflit d'intérêts

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.