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Transcatheter bioprosthetic heart valve (BHV) thrombosis poses a risk for thromboembolism, even after the initial post-procedure period. Understanding BHV thrombosis mechanisms is crucial for managing patients receiving these artificial heart valves.

Keywords:
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Area of Science:

  • Cardiology
  • Biomaterials Science
  • Medical Devices

Background:

  • Transcatheter valve therapies are increasingly used for valvular heart disease.
  • Mechanical heart valves (MHV) require anticoagulation, but its necessity for bioprosthetic heart valves (BHV) is unclear.
  • BHV thrombosis is a risk after transcatheter replacement, potentially leading to thromboembolism.

Purpose of the Study:

  • To review data on prosthetic valve thrombosis.
  • To discuss pathophysiological mechanisms of valve thrombus formation.
  • To provide perspective on BHV thrombosis in the era of transcatheter valve replacement.

Main Methods:

  • Literature review of prosthetic valve thrombosis.
  • Analysis of pathophysiological mechanisms.
  • Synthesis of findings for clinical implications.

Main Results:

  • BHV thrombosis is a substrate for thromboembolism.
  • Thrombosis may represent a reversible cause of BHV dysfunction.
  • Risk of thromboembolism persists beyond the initial post-procedural months.

Conclusions:

  • BHV thrombosis is a significant concern in transcatheter valve replacement.
  • Further research is needed to optimize anticoagulation strategies for BHV recipients.
  • Understanding thrombosis mechanisms is key to improving outcomes with transcatheter artificial heart valves.