Prosthesis-Annular Size Ratio and Its Impact on Leaks

In low-risk patients, there was a very low incidence of greater than moderate leak, including in patients with minimal oversizing.

Tamaño de la prótesis con respecto al anillo y su impacto en los leaks

The degree of prosthesis oversizing had a great impact on mild paravalvular leak reduction and the need for post-dilation without changing valve hemodynamics.

This research investigated the impact of the perimeter and the area, measured by tomography, and the valve size chosen on the incidence of paravalvular leak in patients treated with a Sapien 3 prosthesis.

The PARTNER (Placement of Aortic Transcatheter Valves 3) study included 495 low surgical risk patients with severe aortic stenosis who underwent transcatheter aortic valve replacement (TAVR). Prosthesis sizing was based on annulus area, as measured by tomography.

Oversizing was 7.9 ± 8.7% for the annulus and 2.1 ± 4.1% for the perimeter. The incidence of leak greater than moderate was very low (0.6%).

The incidence of patients with leak greater than mild who required post-dilation was inversely proportional to the degree of oversizing.

In patients with intermediate measurements—who could therefore receive larger or smaller valves—, larger valves had a lower incidence of leak (12.0% vs. 43.4%; p < 0.0001).


Read also: 3rd Generation Valves in Large and X-Large Annuli.


Prosthesis size (rather than the degree of oversizing) impacted the effective orifice and gradients.

Conclusion

In patients who were candidates to two valvular measures because of their annulus, choosing the larger measure reduces the incidence of leak and improves their hemodynamic profile.

Original Title: Impact of Annular Oversizing on Paravalvular Regurgitation and Valve Hemodynamics: New Insights From PARTNER 3.

Reference: Abdul Rahman Ihdayhid et al. JACC Cardiovasc Inter. 2021 Oct 11;14(19):2158-2169. doi: 10.1016/j.jcin.2021.07.018.


Subscribe to our weekly newsletter

Get the latest scientific articles on interventional cardiology

More articles by this author

Prospective Analysis of the Feasibility of the PASCAL System for Transcatheter Mitral Repair: OneForAll Registry

Courtesy of Dr. Juan Manuel Pérez. Mitral transcatheter edge-to-edge repair (M-TEER) is an effective option for patients with severe mitral regurgitation who are at high...

Left Bundle Branch Block after TAVR: What Is Its Impact?

Courtesy of Dr. Juan Manuel Pérez. Left bundle branch block (LBBB) is a common complication following transcatheter aortic valve replacement (TAVR), which can be either...

Multicenter Experience with 3D Intracardiac Echocardiography for Guiding Interventional Cardiac Procedures

Courtesy of Dr. Juan Manuel Pérez. Imaging techniques play a fundamental role in interventional cardiac procedures. Intracardiac echocardiography (ICE) appears as an alternative to transesophageal...

Pathology of Self-Expanding Transcatheter Aortic Bioprostheses and Hypoattenuated Leaflet Thickening

Courtesy of Dr. Juan Manuel Pérez. Despite the available long term followup data on of transcatheter aortic valve replacement (TAVR), bioprosthesis durability continues under debate....

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Related Articles

SOLACI Sessionsspot_img

Recent Articles

ACC 2025 | FAME 3: FFR Guided PCI vs CABG 5 Year Outcomes.

Earlier studies comparing percutaneous coronary intervention (PCI) vs coronary artery bypass graft (CABG) have shown fewer events at long term for the surgical strategy.  However,...

ACC 2025 | API-CAT: Reduced vs. Full Dose Extended Anticoagulation in Patients with Cancer Related VTE

The risk of cancer related recurrent venous thromboembolism (VTE) will drop over time, while bleeding risk will persist. At present, it is recommended we...

STRIDE: Semaglutide in Patients with Peripheral Arterial Disease and Type II Diabetes

Peripheral arterial disease (PAD) is a severe complication in patients with type II diabetes, primarily affecting peripheral vessels, especially below-the-knee (BTK) arteries. This condition...