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Related Concept Videos

Heart Valves01:16

Heart Valves

The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
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...
Cardiac Catheterization I: Pre-Procedure Overview01:28

Cardiac Catheterization I: Pre-Procedure Overview

Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...

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Related Experiment Video

Updated: Jun 10, 2026

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
11:12

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves

Published on: October 17, 2013

[Technologies for cardiac valve prostheses].

Kiyoharu Nakano1

  • 1Department of Cardiovascular Surgery, Tokyo Women's Medical University, Medical Center East, Tokyo, Japan.

Kyobu Geka. the Japanese Journal of Thoracic Surgery
|August 19, 2010
PubMed
Summary
This summary is machine-generated.

Technological advancements in cardiac valve prostheses, including mechanical and biological options, are reviewed. Modern devices offer improvements, but durability and anticoagulation remain key considerations for patients.

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Combining 3D-Printing and Electrospinning to Manufacture Biomimetic Heart Valve Leaflets
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Last Updated: Jun 10, 2026

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
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Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves

Published on: October 17, 2013

Combining 3D-Printing and Electrospinning to Manufacture Biomimetic Heart Valve Leaflets
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Combining 3D-Printing and Electrospinning to Manufacture Biomimetic Heart Valve Leaflets

Published on: March 23, 2022

Area of Science:

  • Cardiovascular Surgery
  • Biomaterials Science
  • Biomedical Engineering

Context:

  • The evolution of cardiac valve prostheses is crucial for treating valvular heart disease.
  • Mechanical and biological valve prostheses have undergone significant development since the 1960s.

Purpose:

  • To provide a historical review of mechanical and biological cardiac valve prostheses.
  • To offer a current overview of modern cardiac valve devices and their technological advancements.

Summary:

  • Mechanical prostheses have improved in design and materials (e.g., pyrolytic carbon bileaflet valves), offering antithrombotic properties but still requiring warfarin therapy.
  • Biological prostheses utilize porcine aortic valves or bovine pericardium, with enhanced fixation and anti-mineralization, yet durability remains a challenge.
  • Innovations include tissue-engineered bioprosthetic valves and transcatheter valve replacement therapies.

Impact:

  • Highlights the ongoing progress in cardiac valve replacement technology.
  • Informs clinicians and researchers about the current state and future directions in cardiac valve prostheses.
  • Underscores the trade-offs between durability, thrombogenicity, and anticoagulation requirements for different valve types.