Aims
Peri-procedural transcatheter valve embolization and migration (TVEM) is a rare but potentially devastating complication of transcatheter aortic valve implantation (TAVI). We sought to assess the incidence, causes, and outcome of TVEM in a large multicentre cohort.
Methods and results
We recorded cases of peri-procedural TVEM in patients undergoing TAVI between January 2010 and December 2017 from 26 international sites. Peri-procedural TVEM occurred in 273/29 636 (0.92%) TAVI cases (age 80.8 ± 7.3 years; 53.8% female), of which 217 were to the ascending aorta and 56 to the left ventricle. The use of self-expanding or first-generation prostheses and presence of a bicuspid aortic valve were independent predictors of TVEM. Bail-out measures included repositioning attempts using snares or miscellaneous tools (41.0%), multiple valve implantations (83.2%), and conversion to surgery (19.0%). Using 1:4-propensity matching, we identified a cohort of 235 patients with TVEM (TVEMPS) and 932 patients without TVEM (non-TVEMPS). In the matched cohort, all-cause mortality was higher in TVEMPS than in non-TVEMPS at 30 days (18.6% vs. 4.9%; P < 0.001) and after 1 year (30.5% vs. 16.6%; P < 0.001). Major stroke was more frequent in TVEMPS at 30 days (10.6% vs. 2.8%; P < 0.001), but not at 1 year (4.6% vs. 1.9%; P = 0.17). The need for emergent cardiopulmonary support, major stroke at 30 days, and acute kidney injury Stages 2 and 3 increased the risk of 1-year mortality, whereas a better renal function at baseline was protective.
Conclusion
Transcatheter valve embolization and migration occurred in approximately 1% and was associated with increased morbidity and mortality.
DCO following TAVR is a rare phenomenon that is associated with a high in-hospital mortality rate. Clinicians should be aware that coronary obstruction can occur after the original TAVR procedure and have a low threshold for performing coronary angiography when clinically suspected.
The S3-THV was associated with a higher incidence of PPMI compared to the XT-THV. In the S3-THV group, pacemaker implantation was strictly associated with deep valve implantation. An implantation technique involving higher initial placement of the central marker (from 0 to 3 mm above the base of the aortic cusps) and, as a consequence, higher final valve depth might help in preventing post-TAVI PPMI with the S3-THV, without affecting the risk of paravalvular leak.
Background
Redo surgical mitral valve replacement (SMVR) is the current standard of care for patients with failed bioprosthetic mitral valve (MV). Transcatheter mitral valve‐in‐valve replacement (TMViV) is arising as an alternative to SMVR in high risk patients. We sought to evaluate procedural safety, early and mid‐term outcomes of patients who underwent transseptal TMViV (TS‐TMViV), transapical TMViV (TA‐TMViV), or redo‐SMVR.
Methods
We identified patients with failed bioprosthetic MV who underwent TS‐TMViV, TA‐TMViV, or SMVR at four Italian Centers. Clinical and echocardiographic data were codified according to Mitral Valve Academic Research Consortium definition (MVARC), except for significant valve stenosis.
Results
Between December 2012 and September 27, 2019 patients underwent TS‐TMViV, 22 TA‐TMViV, and 29 redo‐SMVR. TS‐TMViV and TA‐TMViV patients presented higher mean age and surgical risk scores compared with SMVR group (77.8 ± 12 years, 77.3 ± 7.3 years, 67.8 ± 9.4 years, p < .001; STS PROM 8.5 ± 7.2; 8.9 ± 4.7; 3.6 ± 2.6, p < .001). TS‐TMViV procedure was associated with shorter intensive care unit time and total length of stay (LOS) compared with TA‐TMViV and SMVR group. There were no differences in MVARC procedural success at 30‐days (74.1, 72.7, and 51.7%, p = .15) and one‐year all‐cause mortality between groups (14.8, 18.2, and 17.2%, p = 1.0). MV mean gradient was similar between TS‐TMViV, TA‐TMViV, and SMVR groups at 30 days and 12 months.
Conclusions
For the selected patients, TS‐TMViV and TA‐TMViV are to be considered a valid alternative to redo‐SMVR with comparable 1‐year survival. TS‐TMViV is the less invasive strategy and has the advantage of shortening the LOS compared with TA‐TMViV.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.