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Heart Valves

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...

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Related Experiment Video

Updated: Jun 19, 2025

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves

Published on: October 17, 2013

Valve-in-Valve-in-Valve.

Selma Tosca Cook¹, Mario Togni¹, Patrice Denervaud¹

¹Cardiology, University of Fribourg, Fribourg, Switzerland.

BMJ Case Reports

|July 23, 2024

Summary

This summary is machine-generated.

Transcatheter aortic valve implantation (TAVI) is standard after surgical aortic valve replacement (SAVR) failure. This case shows a patient had two TAVI procedures eight years apart, highlighting practical considerations for repeat TAVI.

Area of Science:

Cardiology
Interventional Cardiology
Cardiac Surgery

Background:

Surgical aortic valve replacement (SAVR) is a common procedure for aortic valve disease.

Keywords:

Interventional cardiology Valvar diseases

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Degeneration of previously implanted valves necessitates reintervention.

Transcatheter aortic valve implantation (TAVI) is increasingly used for patients with degenerated SAVR valves.