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Related Concept Videos

Heart Valves01:16

Heart Valves

6.4K
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...
6.4K
Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

61
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...
61
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

71
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...
71
Mitral Valve Prolapse II: Assessment and Management01:22

Mitral Valve Prolapse II: Assessment and Management

53
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...
53
Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

58
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...
58
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

65
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...
65

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Related Experiment Video

Updated: Oct 1, 2025

Investigating Aortic Valve Calcification via Isolation and Culture of T Lymphocytes using Feeder Cells from Irradiated Buffy Coat
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Investigating Aortic Valve Calcification via Isolation and Culture of T Lymphocytes using Feeder Cells from Irradiated Buffy Coat

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Bicuspid aortic valve: evolving knowledge and new questions.

Byung Joo Sun1, Jae-Kwan Song2,3

  • 1Division of Cardiology, Department of Internal Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea.

Heart (British Cardiac Society)
|March 10, 2022
PubMed
Summary
This summary is machine-generated.

Bicuspid aortic valve (BAV) presents diverse clinical conditions, from silent cases to severe valvulo-aortopathy. Unified classification and long-term studies are crucial for understanding BAV progression and improving patient outcomes.

Keywords:
aortic aneurysmaortic dissectionaortic regurgitationaortic stenosisbicuspid aortic valve

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Investigating Aortic Valve Calcification via Isolation and Culture of T Lymphocytes using Feeder Cells from Irradiated Buffy Coat
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Area of Science:

  • Cardiovascular Medicine
  • Congenital Heart Disease
  • Genetics and Genomics

Background:

  • Bicuspid aortic valve (BAV) is a prevalent congenital heart defect with diverse presentations.
  • Clinical manifestations range from asymptomatic conditions to severe valvular and aortic diseases.
  • Existing heterogeneity necessitates a unified nosology for BAV.

Purpose of the Study:

  • To review current knowledge on BAV based on clinical evidence.
  • To identify unresolved issues and areas for future research in BAV.
  • To emphasize the need for long-term prospective studies on BAV-associated valvulo-aortopathy.

Main Methods:

  • Comprehensive literature review of clinical studies on BAV.
  • Analysis of existing data on BAV phenotypes and clinical outcomes.
  • Discussion of valvular calcification progression in BAV patients.

Main Results:

  • BAV exhibits significant heterogeneity in morphology and clinical presentation.
  • An international consensus statement provides a unified platform for BAV classification.
  • Longitudinal data are essential for understanding the natural history of BAV-associated conditions.

Conclusions:

  • A unified nosology for BAV is clinically important and supported by expert consensus.
  • Further research, particularly long-term prospective studies, is required to fully understand BAV.
  • Investigating valvular calcification may offer insights into BAV progression.