Transcatheter aortic valve implantation: current and future approaches

Area of Science:

• Cardiology
• Interventional Cardiology
• Medical Devices

Background:

• Transcatheter aortic valve implantation (TAVI) emerged as a feasible option for severe aortic stenosis in high-risk patients.
• Multicenter registries and trials like PARTNER have established TAVI's safety and efficacy.
• TAVI offers superior outcomes compared to medical treatment and non-inferiority to surgical replacement in high-risk populations.

Purpose of the Study:

• To review the current evidence on transcatheter aortic valve implantation (TAVI).
• To discuss the safety, efficacy, and complications associated with TAVI.
• To explore future directions and potential expansion of TAVI to broader patient groups.

Main Methods:

• Review of early single-center series and multicenter registries.
• Analysis of data from the randomized, controlled PARTNER trial.
• Evaluation of preliminary data on long-term outcomes and specific TAVI applications.

Main Results:

• TAVI demonstrates excellent hemodynamics, though mild paravalvular regurgitation is common.
• Key complications include stroke, vascular issues, and conduction disturbances requiring pacemakers.
• Promising data exist for long-term outcomes, valve-in-valve procedures, and lower-risk patient TAVI.

Conclusions:

• TAVI is a proven treatment for severe aortic stenosis in high-risk patients.
• Further advancements in technology and long-term durability data are crucial for expanding TAVI's use.
• Future research will focus on optimizing TAVI for a wider patient spectrum and ensuring long-term prosthesis performance.