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Related Concept Videos

Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

83
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...
83
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

45
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...
45
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

80
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...
80
Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral Stenosis II: Clinical features and Diagnostic Tests

47
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...
47
Mitral Regurgitation II: Clinical Features and Diagnostic Tests01:23

Mitral Regurgitation II: Clinical Features and Diagnostic Tests

83
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...
83
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

52
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...
52

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Related Experiment Video

Updated: Oct 17, 2025

An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat
07:42

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

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Left Ventricular Remodeling Shortly after Open Mitral Valve Replacement for Rheumatic Mitral Stenosis.

Marcus Vinicius Silva Ferreira1, Cláudio Ribeiro da Cunha2, Gabrielle Santos Oliveira1

  • 1Department of Cardiovascular Surgery, Instituto de Cardiologia do Distrito Federal, Brasília, DF, Brazil.

Brazilian Journal of Cardiovascular Surgery
|October 7, 2021
PubMed
Summary

Left ventricular dysfunction after mitral valve replacement is uncommon. Smaller body weight and smaller mitral valve area predict worse outcomes in patients with rheumatic mitral stenosis.

Keywords:
Mitral ValveMitral Valve StenosisOdds RatioRheumatic DiseasesStroke Volumes

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Echocardiography

Background:

  • Left ventricular dysfunction post-mitral valve surgery for rheumatic mitral stenosis is rare.
  • Understanding left ventricular remodeling patterns is crucial for predicting outcomes.

Purpose of the Study:

  • To determine left ventricular remodeling patterns after open mitral valve replacement for rheumatic mitral stenosis.
  • To identify determinants of postoperative worsening of left ventricular ejection fraction.

Main Methods:

  • 107 adult patients with rheumatic mitral stenosis underwent open mitral valve replacement.
  • Longitudinal echocardiography assessed left ventricular morphology and function.
  • Multivariable logistic regression identified predictors of decreased ejection fraction.

Main Results:

  • 16.8% of patients experienced worsening left ventricular ejection fraction.
  • Lower body weight and smaller preoperative mitral valve area predicted this decline.
  • These patients had higher mortality and morbidity.

Conclusions:

  • Left ventricular remodeling varies in rheumatic mitral stenosis patients undergoing surgery.
  • Preoperative low body weight and small mitral valve area are key predictors of reduced ejection fraction post-surgery.
  • Smaller patients with extensive rheumatic disease are at higher risk for left ventricular dysfunction.