Thirty-Day Outcomes of Transcatheter Mitral Valve Replacement for Degenerated Mitral Bioprostheses (Valve-in-Valve), Failed Surgical Rings (Valve-in-Ring), and Native Valve With Severe Mitral Annular Calcification (Valve-in-Mitral Annular Calcification) in the United States: Data From the Society of Thoracic Surgeons/American College of Cardiology/Transcatheter Valve Therapy Registry

Circ Cardiovasc Interv. 2020 Mar;13(3):e008425. doi: 10.1161/CIRCINTERVENTIONS.119.008425. Epub 2020 Mar 6.

Abstract

Background: Transcatheter mitral valve replacement using aortic transcatheter heart valves has recently become an alternative for patients with degenerated mitral bioprostheses, failed surgical repairs with annuloplasty rings or severe mitral annular calcification who are poor surgical candidates. Outcomes of these procedures are collected in the Society of Thoracic Surgeons/American College of Cardiology/Transcatheter Valve Therapy Registry. A comprehensive analysis of mitral valve-in-valve (MViV), mitral valve-in-ring (MViR), and valve-in-mitral annular calcification (ViMAC) outcomes has not been performed. We sought to evaluate short-term outcomes of early experience with MViV, MViR, and ViMAC in the United States.

Methods: Retrospective analysis of data from the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy Registry.

Results: Nine hundred three high-risk patients (median Society of Thoracic Surgeons score 10%) underwent MViV (n=680), MViR (n=123), or ViMAC (n=100) between March 2013 and June 2017 at 172 hospitals. Median age was 75 years, 59.2% female. Technical and procedural success were higher in MViV. Left ventricular outflow tract obstruction occurred more frequently with ViMAC (ViMAC=10%, MViR=4.9%, MViV=0.7%; P<0.001). In-hospital mortality (MViV=6.3%, MViR=9%, ViMAC=18%; P=0.004) and 30-day mortality (MViV=8.1%, MViR=11.5%, ViMAC=21.8%; P=0.003) were higher in ViMAC. At 30-day follow-up, median mean mitral valve gradient was 7 mm Hg, most patients (96.7%) had mitral regurgitation grade ≤1 (+) and were in New York Heart Association class I to II (81.7%).

Conclusions: MViV using aortic balloon-expandable transcatheter heart valves is associated with a low complication rate, a 30-day mortality lower than predicted by the Society of Thoracic Surgeons score, and superior short-term outcomes than MViR and ViMAC. At 30 days, patients in all groups experienced improvement of symptoms, and valve performance remained stable. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT02245763.

Keywords: bioprosthesis; follow-up; mitral valve; registries; surgeons.

Publication types

  • Multicenter Study
  • Observational Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Aged, 80 and over
  • Calcinosis / etiology
  • Calcinosis / mortality
  • Calcinosis / surgery*
  • Cardiac Catheterization / adverse effects
  • Cardiac Catheterization / instrumentation*
  • Cardiac Catheterization / mortality
  • Female
  • Heart Valve Diseases / mortality
  • Heart Valve Diseases / surgery*
  • Heart Valve Prosthesis Implantation / adverse effects
  • Heart Valve Prosthesis Implantation / instrumentation*
  • Heart Valve Prosthesis Implantation / mortality
  • Heart Valve Prosthesis*
  • Hospital Mortality
  • Humans
  • Male
  • Mitral Valve / surgery*
  • Mitral Valve Annuloplasty / adverse effects
  • Mitral Valve Annuloplasty / instrumentation*
  • Mitral Valve Annuloplasty / mortality
  • Prosthesis Design
  • Prosthesis Failure*
  • Registries
  • Retrospective Studies
  • Risk Factors
  • Time Factors
  • Treatment Outcome
  • United States

Associated data

  • ClinicalTrials.gov/NCT02245763
  • ClinicalTrials.gov/NCT02245763