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Transcatheter aortic valve implantation (TAVI) durability is crucial as its use expands. Standardized definitions of structural valve degeneration (SVD) improve durability assessments for long-term outcomes.

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Area of Science:

  • Cardiovascular Medicine
  • Interventional Cardiology
  • Biomaterials Science

Background:

  • Transcatheter aortic valve implantation (TAVI) is standard for high-risk and alternative for low-to-intermediate risk severe aortic stenosis.
  • Increasing use in younger, lower-risk patients necessitates focus on long-term transcatheter aortic valve durability.
  • Previous lack of standardized structural valve degeneration (SVD) definitions hindered comparative analysis of prosthetic valve durability.

Purpose of the Study:

  • To examine potential mechanisms and rates of structural valve degeneration (SVD) in transcatheter bioprostheses.
  • To review the role of redo TAVI as a treatment option for degenerated valves.
  • To highlight the impact of standardized SVD definitions on evaluation uniformity.

Main Methods:

  • Review of existing literature on transcatheter bioprosthesis degeneration.
  • Analysis of standardized SVD definitions (2017 ESC/EAPCI/EACTS and 2018 VIVID).
  • Examination of clinical data and outcomes related to SVD and redo TAVI.

Main Results:

  • Standardized definitions have increased uniformity in SVD evaluation.
  • Understanding SVD mechanisms is key to improving long-term valve durability.
  • Redo TAVI is emerging as a viable option for valve failure.

Conclusions:

  • Long-term durability of TAVI bioprostheses is a growing concern.
  • Standardized SVD definitions are essential for reliable comparative studies.
  • Further research into SVD mechanisms and redo TAVI is warranted.