ACR appropriateness criteria imaging for transcatheter aortic valve replacement

Area of Science:

• Cardiovascular Medicine
• Medical Imaging
• Interventional Cardiology

Background:

• Severe aortic stenosis often precludes conventional aortic valve replacement due to patient factors like age and comorbidities.
• Transcatheter aortic valve replacement (TAVR) has emerged as a vital alternative, offering a less invasive approach.
• Effective TAVR relies heavily on precise preprocedural imaging for planning due to the absence of direct surgical visualization.

Purpose of the Study:

• To evaluate pre-intervention imaging examinations for transcatheter aortic valve replacement (TAVR).
• To focus on imaging requirements at the aortic valve, supravalvular aorta, and iliofemoral access sites.
• To provide evidence-based guidelines for optimal imaging in TAVR planning.

Main Methods:

• Development of ACR Appropriateness Criteria through a multidisciplinary expert panel review.
• Systematic analysis of current peer-reviewed medical literature.
• Application of a modified Delphi consensus methodology to assess imaging appropriateness.

Main Results:

• The guideline evaluates key imaging examinations for TAVR preprocedural planning.
• It addresses imaging needs for the aortic valve, supravalvular aorta, and iliofemoral vasculature.
• Recommendations are based on evidence and expert consensus where evidence is limited.

Conclusions:

• Appropriate pre-intervention imaging is critical for successful transcatheter aortic valve replacement.
• These guidelines aid in selecting the most suitable imaging modalities for TAVR planning.
• The criteria support informed decision-making for complex cardiovascular interventions.