Scarce data exist on mitral valve (MV) infective endocarditis (IE) after transcatheter aortic valve implantation (TAVI). This multicenter study included a total of 579 patients with a diagnosis of definite IE after TAVI from the IE after TAVI International Registry and aimed to evaluate the incidence, characteristics, management, and outcomes of MV-IE after TAVI. A total of 86 patients (14.9%) had MV-IE. These patients were compared with 284 patients (49.1%) with involvement of the transcatheter heart valve (THV) only. Two factors were found to be associated with MV-IE: the use of self-expanding valves (adjusted odds ratio 2.49, 95% confidence interval [CI] 1.23 to 5.07, p = 0.012), and the presence of an aortic regurgitation ≥2 at discharge (adjusted odds ratio 3.33; 95% CI 1.43 to 7.73, p <0.01). There were no differences in IE timing and causative microorganisms between groups, but surgical management was significantly lower in patients with MV-IE (6.0%, vs 21.6% in patients with THV-IE, p = 0.001). All-cause mortality rates at 2-year follow-up were high and similar between patients with MV-IE (51.4%, 95% CI 39.8 to 64.1) and patients with THV-IE (51.5%, 95% CI 45.4 to 58.0) (log-rank p = 0.295). The factors independently associated with increased mortality risk in patients with MV-IE were the occurrence of heart failure (adjusted p <0.001) and septic shock (adjusted p <0.01) during the index hospitalization. One of 6 IE episodes after TAVI is localized on the MV. The implantation of a self-expanding THV and the presence of an aortic regurgitation ≥2 at discharge were associated with MV-IE. Patients with MV-IE were rarely operated on and had a poor prognosis at 2-year follow-up.
Reference: Mitral Valve Infective Endocarditis after Trans-Catheter Aortic Valve Implantation.
Panagides V, Del Val D, Abdel-Wahab M, Mangner N, Durand E, Ihlemann N, Urena M, Pellegrini C, Giannini F, Scislo P, Huczek Z, Landt M, Auffret V, Sinning JM, Cheema AN, Nombela-Franco L, Chamandi C, Campelo-Parada F, Munoz-Garcia E, Herrmann HC, Testa L, Kim WK, Castillo JC, Alperi A, Tchetche D, Bartorelli AL, Kapadia S, Stortecky S, Amat-Santos I, Wijeysundera HC, Lisko J, Gutiérrez-Ibanes E, Serra V, Salido L, Alkhodair A, Livi U, Chakravarty T, Lerakis S, Vilalta V, Regueiro A, Romaguera R, Kappert U, Barbanti M, Masson JB, Maes F, Fiorina C, Miceli A, Kodali S, Ribeiro HB, Mangione JA, Brito FS Jr, Dato GMA, Rosato F, Ferreira MC, de Lima VC, Colafranceschi AS, Abizaid A, Marino MA, Esteves V, Andrea J, Godinho RR, Alfonso F, Eltchaninoff H, Søndergaard L, Himbert D, Husser O, Latib A, Breton HL, Servoz C, Pascual I, Siddiqui S, Olivares P, Hernandez-Antolin R, Webb JG, Sponga S, Makkar R, Kini AS, Boukhris M, Gervais P, Linke A, Crusius L, Holzhey D, Rodés-Cabau J. Am J Cardiol. 2022 Apr 3:S0002-9149(22)00178-3.