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Related Concept Videos

Heart Valves01:16

Heart Valves

13.5K
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...
13.5K
Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

912
IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
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Mitral Valve Prolapse II: Assessment and Management01:22

Mitral Valve Prolapse II: Assessment and Management

1.1K
IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
1.1K
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

1.3K
Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
1.3K
Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

1.2K
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...
1.2K
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

989
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: Mar 26, 2026

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement

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Year in review: complex valve reconstruction.

Amine Mazine1, Mitesh Badiwala, Gideon Cohen

  • 1Division of Cardiac Surgery, Sunnybrook Health Sciences Centre and Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada.

Current Opinion in Cardiology
|January 28, 2016
PubMed
Summary

Valve reconstruction offers a promising alternative to valve replacement for heart valve disease, especially in younger adults. Advances in techniques and biomaterials are improving outcomes for complex cases, though long-term durability requires further study.

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Area of Science:

  • Cardiovascular Surgery
  • Biomaterials Science

Background:

  • Surgical management of heart valve disease increasingly emphasizes reconstructive techniques.
  • Understanding of aortic insufficiency mechanisms has advanced.

Purpose of the Study:

  • To review recent data and current practices in reconstructive valve surgery.
  • To highlight advancements in valve repair and reconstruction.

Main Methods:

  • Review of current literature on reconstructive valve surgery techniques.
  • Analysis of outcomes data for aortic and mitral valve repair.
  • Evaluation of novel biomaterials in valve reconstruction.

Main Results:

  • Aortic valve repair shows improved early and late outcomes due to new techniques and better understanding of disease mechanisms.
  • Mitral valve repair techniques are refined for complex degenerative disease.
  • Novel biomaterials enable valve reconstruction for extensive defects, including infective endocarditis.

Conclusions:

  • Valve reconstruction is a viable alternative to valve replacement, avoiding prosthesis-related complications.
  • Reconstruction is particularly beneficial for young and middle-aged adults.
  • Long-term benefits and durability of complex valve reconstruction require further investigation.