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Related Concept Videos

Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...

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Related Experiment Video

Updated: Jul 17, 2026

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
12:17

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots

Published on: May 21, 2017

Stentless valves for aortic valve replacement: where do we stand?

Laurent de Kerchove1, David Glineur, Gebrine El Khoury

  • 1Department of Cardiology, Cardiothoracic and Vascular Surgery, Université Catholique de Louvain, Brussels, Belgium.

Current Opinion in Cardiology
|February 8, 2007
PubMed
Summary

Stentless valves offer superior hemodynamics and less patient-prosthesis mismatch, especially in small aortic annuli. While durability and survival appear comparable to modern stented valves, further long-term studies are needed.

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Area of Science:

  • Cardiovascular Surgery
  • Biomaterials Science
  • Medical Device Engineering

Background:

  • Stentless valves have been used for over a decade, with advancements in stented valve technology.
  • Hemodynamic performance, left ventricular mass regression, durability, and survival are key considerations for prosthetic valves.

Purpose of the Study:

  • To review the advantages of stentless valves compared to stented valves.
  • To evaluate current evidence on hemodynamic performance, patient-prosthesis mismatch, durability, and survival.

Main Methods:

  • Comparative analysis of recent studies and randomized trials.
  • Review of clinical outcomes including hemodynamic parameters and long-term survival data.

Main Results:

  • Stentless valves show superior hemodynamics versus porcine stented valves, but less so versus pericardial stented valves.
  • Patient-prosthesis mismatch is less frequent with stentless valves.
  • Left ventricular mass regression is equivalent at 1 year; durability is comparable at 10 years. Survival advantages are not confirmed in recent studies.

Conclusions:

  • Improved stented valves have narrowed hemodynamic differences with stentless valves.
  • Stentless valves remain beneficial for patients with small aortic annuli.
  • Midterm durability and survival are equivalent, but longer-term data are required.