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Related Concept Videos

Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

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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...
77
Mitral Regurgitation II: Clinical Features and Diagnostic Tests01:23

Mitral Regurgitation II: Clinical Features and Diagnostic Tests

78
Mitral regurgitation (MR) is a valvular heart disorder in which the mitral valve fails to close tightly, allowing blood to leak backward into the heart. Understanding the clinical manifestations, assessment, diagnostic findings, and medical management of MR is crucial to effectively managing affected patients.Clinical Manifestations of Mitral RegurgitationMitral regurgitation can be acute or chronic, each presenting differently and requiring different approaches:1. Acute Mitral...
78
Mitral Regurgitation IV: Nursing Management01:28

Mitral Regurgitation IV: Nursing Management

115
Mitral regurgitation (MR) is a condition where the mitral valve does not close properly, leading to the backward flow of blood from the left ventricle into the left atrium during systole. This condition can arise from various causes, including rheumatic fever, infective endocarditis, or degenerative valve disease. Effective nursing management is crucial to optimizing patient outcomes and involves comprehensive assessment and targeted interventions.Comprehensive Patient AssessmentA detailed...
115
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

47
Mitral regurgitation (MR) is characterized by retrograde blood circulation from the left ventricle into the left atrium due to inadequate mitral valve closure. The severity of the condition, symptoms, and underlying cause determine treatment strategies.Monitoring and Pharmacological TreatmentPatients with mild to moderate MR typically do not need immediate intervention but regular monitoring to assess progression and guide treatment. Patients with mild MR should have an echocardiogram every 3-5...
47
Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral Stenosis II: Clinical features and Diagnostic Tests

43
Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
43
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

80
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...
80

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Related Experiment Video

Updated: Oct 7, 2025

High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart
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High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart

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Diastolic Mitral Regurgitation.

Rowa Attar1, K Carlos El-Tallawi1

  • 1Houston Methodist DeBakey Heart & Vascular Center, Houston, Texas, US.

Methodist Debakey Cardiovascular Journal
|January 7, 2022
PubMed
Summary

High-grade atrioventricular block can cause diastolic mitral regurgitation due to elevated left ventricular pressures. This finding highlights a unique echocardiographic manifestation in elderly patients with cardiac conduction abnormalities.

Keywords:
Doppleratrioventricular blockechocardiographymitral regurgitation

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An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat
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Related Experiment Videos

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High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart
11:50

High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart

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An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat
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Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
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Area of Science:

  • Cardiology
  • Echocardiography
  • Cardiac Electrophysiology

Background:

  • An 89-year-old female presented with fatigue and was diagnosed with high-grade atrioventricular (AV) block.
  • Transthoracic echocardiography was performed to evaluate for structural heart abnormalities.

Observation:

  • Color Doppler revealed mild mitral regurgitation (MR) with a diastolic component.
  • Continuous wave Doppler confirmed the diastolic MR jet.

Findings:

  • Diastolic mitral regurgitation in this context is attributed to AV dissociation.
  • Prolonged diastolic time and left atrial (LA) contractions elevate left ventricular end-diastolic pressure (LVEDP).
  • This pressure gradient facilitates retrograde flow from the left ventricle to the left atrium during diastole.

Implications:

  • Diastolic MR can serve as an echocardiographic marker for high-grade AV block.
  • Understanding this mechanism is crucial for diagnosing and managing patients with conduction abnormalities.
  • Elevated LVEDP leading to diastolic MR may also be observed in restrictive cardiomyopathies and severe aortic regurgitation.