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

Mitral Valve Prolapse I: Introduction

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...
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

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...
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: May 25, 2026

Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
12:12

Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice

Published on: February 14, 2017

[Bicuspid aortic valve].

Stefano Nistri1, Cristina Basso, Gaetano Thiene

  • 1Servizio di Cardiologia, CMSR Veneto Medica, Altavilla Vicentina (VI). snistr@tin.it

Giornale Italiano Di Cardiologia (2006)
|February 11, 2012
PubMed
Summary
This summary is machine-generated.

Bicuspid aortic valve (BAV) is a common congenital heart defect leading to serious valvular and aortic complications. Lifelong monitoring and tailored therapies are crucial for managing BAV patients.

Related Experiment Videos

Last Updated: May 25, 2026

Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
12:12

Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice

Published on: February 14, 2017

Area of Science:

  • Cardiology
  • Genetics
  • Vascular Biology

Context:

  • Bicuspid aortic valve (BAV) is the most prevalent congenital heart anomaly.
  • BAV is associated with significant valvular and thoracic aorta pathologies.
  • Genetic factors may underlie BAV and associated aortic disease.

Purpose:

  • To summarize the natural history, inheritance patterns, and clinical management of BAV.
  • To highlight the spectrum of BAV-related complications.
  • To emphasize the need for specialized patient care guidelines.

Summary:

  • BAV predisposes individuals to valvular issues (stenosis, regurgitation, endocarditis) and aortic complications (dilation, aneurysm, dissection).
  • Inheritance is often autosomal dominant with reduced penetrance, suggesting a potential single-gene defect for BAV and thoracic aortic aneurysms.
  • Management requires vigilant clinical follow-up and guideline-directed medical and surgical therapies.

Impact:

  • Improved understanding of BAV natural history and genetic basis.
  • Enhanced clinical surveillance strategies for BAV patients.
  • Development of targeted therapeutic approaches to mitigate BAV complications.