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Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
Published on: May 21, 2017
Transcatheter aortic valve replacement in patients with concomitant mitral stenosis
Masahiko Asami1, Stephan Windecker1, Fabien Praz1
1Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, Bern, Switzerland.
Transcatheter aortic valve replacement (TAVR) patients with mitral stenosis (MS) face a significantly higher risk of cardiovascular death and stroke. This increased risk, particularly evident in rheumatic MS cases, emerges early post-procedure.
Area of Science:
- Cardiology
- Interventional Cardiology
- Valvular Heart Disease
Background:
- Multivalvular disease is a growing concern in elderly patients undergoing transcatheter aortic valve replacement (TAVR).
- Concomitant mitral stenosis (MS) is frequently observed in patients with severe aortic stenosis (AS) undergoing TAVR.
Purpose of the Study:
- To investigate the impact of concomitant mitral stenosis (MS) on clinical outcomes in patients undergoing TAVR for severe, symptomatic aortic stenosis (AS).
Main Methods:
- Analysis of 971 patients undergoing TAVR with available echocardiographic data for MS assessment.
- Stratification of patients based on the degree and etiology of concomitant MS (degenerative vs. rheumatic).
- Comparison of clinical outcomes, including cardiovascular death and disabling stroke, between patients with and without MS at 1-year follow-up.
Main Results:
- Mitral stenosis (MS) was documented in 18.1% of TAVR patients, with moderate/severe MS in 2.9%.
- Patients with MS had a significantly increased risk of 1-year cardiovascular death (adjusted hazard ratio [HRadj] 3.64) and disabling stroke (HRadj 2.98) compared to those without MS.
- These adverse events emerged within 30 days and were predominantly driven by patients with rheumatic MS.
Conclusions:
- Concomitant MS affects approximately one-fifth of patients undergoing TAVR for severe AS.
- MS is associated with a threefold increased risk of adverse cardiovascular events at 1 year post-TAVR.
- The increased risk is early-onset and largely attributable to rheumatic MS.
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