Transcatheter aortic valve implantation: status and challenges

Area of Science:

• Cardiovascular Medicine
• Biomaterials Science
• Surgical Innovation

Background:

• Calcific aortic valve disease is a leading cause of valvular heart disease in the elderly, often necessitating valve replacement.
• Transcatheter aortic valve implantation (TAVI) presents a less invasive alternative to traditional surgical aortic valve replacement, particularly for high-risk or inoperable patients with aortic stenosis.

Purpose of the Study:

• To review the essential characteristics of transcatheter aortic valve implantation devices.
• To identify current complications associated with TAVI and discuss future developmental goals.
• To highlight the critical role of pathology in TAVI research and development.

Main Methods:

• Literature review and analysis of current TAVI device requirements and performance.
• Examination of reported complications related to TAVI procedures and devices.
• Discussion of future directions for TAVI technology enhancement.

Main Results:

• TAVI devices require biocompatibility, excellent hemodynamics, ease of insertion, secure anchoring, and durability without increased thrombosis or infection risk.
• Complications are linked to insertion site, implantation location (aorta, coronary ostia, left ventricle base), and device design.
• Unanticipated complications are expected with novel technologies.

Conclusions:

• Future TAVI device development should focus on enhancing effectiveness, durability, safety, and ease of implantation to improve patient outcomes.
• Pathological examination of excised TAVI devices is vital for understanding complications and guiding future improvements.