%0 Journal Article
%A Estrada Ledesma, Miriam
%A Bastidas Plaza, Diana
%A Pozo Osinalde, Eduardo
%A Marcos-Alberca, Pedro
%A Olmos Blanco, Carmen
%A Mahía Casado, Patricia
%A Luaces Méndez, María
%A Gómez de Diego, José Juan
%A Nombela-Franco, Luis
%A Jiménez-Quevedo, Pilar
%A Tirado, Gabriela
%A Collado Yurrita, Luis Rodolfo
%A Fernández Ortiz, Antonio Ignacio
%A Pérez Villacastín Domínguez, Julián
%A De Agustín Loeches, José Alberto
%T Superiority of 3D planimetry over pressure half-time method for the assessment of mitral valve area after percutaneous edge-to-edge mitral repair
%D 2024
%U https://hdl.handle.net/20.500.14352/128705
%X IIntroduction and objectives: There is limited evidence to identify the most accurate method for measuringthe mitral valve area (MVA) after percutaneous edge-to-edge mitral repair. Our objective was to evaluatethe optimal method in this context and its correlation with the mean transmitral gradient.Methods: A registry of patients undergoing percutaneous mitral repair was conducted, analyzingdifferent methods of measuring MVA and their correlation with the mean gradient.Results: We analyzed data from 167 patients. The mean age was 76   10.3 years, 54% were men, and 46%were women. Etiology was degenerative in 45%, functional in 39%, and mixed in 16%. Postclip MVAmeasurements were 1.89   0.60 cm2 using pressure half-time (PHT), 2.87   0.83 cm2 using 3D planimetry,and the mean gradient was 3   1.19 mmHg. MVA using 3D planimetry showed a stronger correlation withthe mean gradient (r = 0.46, P<.001) than MVA obtained by PHT (r = 0.19, P = .048). Interobserveragreement was also higher with 3D planimetry than with PHT (intraclass correlation coefficient of 0.90 vs0.81 and variation coefficient of 9.6 vs 19.7%, respectively).Conclusions: Our study demonstrates that the PHT method significantly underestimates MVA after clipimplantation compared with direct measurement using transesophageal 3D planimetry. The lattermethod also correlates better with postimplantation gradients and has less interobserver variability.These results suggest that 3D planimetry is a more appropriate method for assessing postclip mitralstenosis.
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