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Related Concept Videos

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...
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 Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral Stenosis II: Clinical features and Diagnostic Tests

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...
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
Mitral Stenosis IV: Nursing Management01:27

Mitral Stenosis IV: Nursing Management

A comprehensive nursing assessment is essential for patients with valvular heart disease, which involves any dysfunction of the heart valves that could impact blood flow and overall heart function.Subjective Data Collection:Chief Complaint and Present Illness: Start with the patient's primary concerns, focusing on the onset, duration, and progression of cardiac symptoms such as dyspnea, fatigue, chest pain, and palpitations.Past Medical History: Collect detailed information on any previous...
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...

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

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Published on: February 14, 2017

Left ventricular function in rheumatic mitral stenosis.

W H Gaasch1, E D Folland

  • 1Department of Medicine (Cardiology), Medical Center of Central Massachusetts/Memorial, Worcester 01605.

European Heart Journal
|July 1, 1991
PubMed
Summary
This summary is machine-generated.

Left ventricular dysfunction in rheumatic mitral stenosis is often explained by factors like mitral valve scarring and right ventricular overload, not myocardial insufficiency. This clarifies the causes of clinical disability in these patients.

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Area of Science:

  • Cardiology
  • Cardiovascular Physiology

Background:

  • Rheumatic mitral stenosis (MS) has long been associated with clinical disability, with myocardial 'insufficiency' previously implicated.
  • Left heart catheterization revolutionized the understanding of haemodynamic factors in MS.

Purpose of the Study:

  • To investigate the haemodynamic factors contributing to clinical disability in patients with rheumatic mitral stenosis.
  • To re-evaluate the role of left ventricular function and exclude myocardial insufficiency as a primary cause.

Main Methods:

  • Utilized left heart catheterization to assess cardiac output, pulmonary pressures, and left ventricular (LV) size and function.
  • Evaluated LV end-diastolic volumes and ejection fractions in patients with rheumatic MS.

Main Results:

  • Patients with rheumatic MS often exhibit low-normal LV end-diastolic volumes and ejection fractions.
  • Reduced ejection fraction may stem from mitral apparatus tethering or abnormal septal motion due to right ventricular overload.
  • Factors like limited LV distensibility and diastolic suction also influence ventricular function.

Conclusions:

  • Left ventricular dysfunction in rheumatic mitral stenosis is typically explained by mechanical and haemodynamic factors, not primary myocardial disease.
  • The findings challenge the notion of 'myocardial insufficiency' as the cause of disability in rheumatic MS.