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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...

Cardiac Catheterization II: Right Heart Catheterization

Cardiac Catheterization II: Right Heart Catheterization

Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...

Cardiac Catheterization III: Left Heart Catheterization

Cardiac Catheterization III: Left Heart Catheterization

Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...

Continuous Renal Replacement Therapy

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Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...

Aortic Regurgitation III: Medical Management

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Cardiac Catheterization I: Pre-Procedure Overview

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: May 9, 2026

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

Published on: June 3, 2018

Transcatheter aortic valve replacement with CoreValve.

Ray V Matthews¹, David M Shavelle

¹Division of Cardiovascular Medicine, Keck School of Medicine, Los Angeles, CA 90033, USA. raymatth@usc.edu

Cardiology Clinics

|August 13, 2013

Summary

This summary is machine-generated.

Transcatheter aortic valve replacement offers a new treatment for high-risk patients with aortic stenosis. The innovative CoreValve system is expanding treatment options and is widely used in Europe.

Keywords:

Aortic stenosis CoreValve Heart valve Percutaneous TAVI TAVR

Related Experiment Videos

Last Updated: May 9, 2026

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

Published on: June 3, 2018

Area of Science:

Cardiology
Medical Devices
Interventional Cardiology

Background:

Aortic stenosis poses a significant risk for surgical patients.
Transcatheter aortic valve replacement (TAVR) has emerged as a viable treatment option.
The CoreValve represents a novel transcatheter valve technology.

Purpose of the Study:

To evaluate the application of the CoreValve system in treating aortic stenosis.
To highlight the potential of this new transcatheter valve for high-risk surgical candidates.

Main Methods:

The CoreValve system utilizes a unique design for transcatheter implantation.
Clinical trials are underway in the United States to assess its efficacy and safety.

Main Results:

The CoreValve system is expanding treatment possibilities for patients with aortic stenosis.
The device is currently completing clinical trials in the US.

Conclusions:

Transcatheter aortic valve replacement with the CoreValve system offers a promising alternative for high-risk surgical patients.
While widely used in Europe, the CoreValve is nearing commercial availability in the United States.