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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...
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
Cardiovascular System Abnormal Findings II: Auscultation01:25

Cardiovascular System Abnormal Findings II: Auscultation

Auscultation, an essential part of a heart examination, is done using a stethoscope. It provides crucial information about heart function and possible heart problems. Due to heart problems, abnormal sounds can be heard during systole or diastole. These sounds include S3 and S4 gallops, opening snaps, systolic clicks, and murmurs.
Abnormal Heart Sounds
Gallops:
Anatomy of the Heart01:27

Anatomy of the Heart

The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...

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Related Experiment Video

Updated: Jun 27, 2026

An Ex Vivo Porcine Model for Hydrodynamic Testing of Experimental Aortic Valve Procedures and Novel Medical Devices
06:56

An Ex Vivo Porcine Model for Hydrodynamic Testing of Experimental Aortic Valve Procedures and Novel Medical Devices

Published on: August 25, 2023

Eustachian valve as a cardiovascular patch.

Anubhav Gupta1, Sachin Talwar, Balram Airan

  • 1Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India.

Heart, Lung & Circulation
|December 17, 2008
PubMed
Summary
This summary is machine-generated.

A large Eustachian valve can be utilized as a cardiovascular patch for congenital heart defect repair. This biological material successfully closed an atrial septal defect and facilitated a Fontan operation tunnel.

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Related Experiment Videos

Last Updated: Jun 27, 2026

An Ex Vivo Porcine Model for Hydrodynamic Testing of Experimental Aortic Valve Procedures and Novel Medical Devices
06:56

An Ex Vivo Porcine Model for Hydrodynamic Testing of Experimental Aortic Valve Procedures and Novel Medical Devices

Published on: August 25, 2023

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
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Published on: October 17, 2013

Patch Angioplasty in the Rat Aorta or Inferior Vena Cava
06:04

Patch Angioplasty in the Rat Aorta or Inferior Vena Cava

Published on: February 27, 2017

Area of Science:

  • Cardiovascular Surgery
  • Congenital Heart Disease
  • Surgical Innovation

Background:

  • The Eustachian valve is a remnant structure in the right atrium.
  • Congenital heart defects often require complex surgical repairs.
  • Alternative autologous tissues for cardiovascular reconstruction are continuously sought.

Observation:

  • A large Eustachian valve was identified in two patients requiring cardiac surgery.
  • The valve's size and structure were deemed suitable for patch grafting.

Findings:

  • In one case, the Eustachian valve was successfully used to repair an atrial septal defect.
  • In a second case, it was employed to construct a tunnel for a lateral tunnel Fontan procedure.

Implications:

  • This demonstrates a novel application of the Eustachian valve in pediatric cardiovascular surgery.
  • Utilizing the Eustachian valve may offer a readily available autologous option for specific cardiac reconstructions.
  • Further research is warranted to assess long-term outcomes and broader applicability.