Aortic Annulus S-Curve: Implications for Transcatheter Aortic Valve Replacement and Related Procedures, Part 1

Area of Science:

• Cardiovascular Imaging
• Interventional Cardiology
• Medical Device Technology

Background:

• Transcatheter aortic valve replacement (TAVR) procedures require precise anatomical visualization.
• Optimal fluoroscopic viewing angles are essential for various TAVR-related steps, including implantation depth and coronary access.
• Current understanding of these angles along the aortic annulus S-curve can be improved.

Purpose of the Study:

• To elucidate the importance of optimal fluoroscopic viewing angles along the aortic annulus S-curve for TAVR.
• To enhance operator confidence and procedural outcomes in TAVR.
• To identify strategies for reducing procedural risks and resource utilization.

Main Methods:

• Analysis of fluoroscopic views relative to the aortic annulus S-curve.
• Correlation of viewing angles with key procedural elements (e.g., implantation depth, commissural alignment, coronary access).
• Evaluation of anatomical landmarks within the aortic annulus S-curve.

Main Results:

• Optimal fluoroscopic angles are critical for assessing TAVR implantation depth and alignment.
• Understanding the S-curve facilitates visualization of coronary anatomy and access.
• Specific viewing angles provide clarity on bioprosthetic or native scallop interactions.

Conclusions:

• Mastery of fluoroscopic angles along the aortic annulus S-curve improves TAVR safety and efficacy.
• Enhanced understanding can lead to reduced procedural time, radiation, and contrast use.
• Improved fluoroscopic guidance contributes to better patient outcomes and fewer complications.