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Related Concept Videos

Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

64
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...
64
Mitral Regurgitation II: Clinical Features and Diagnostic Tests01:23

Mitral Regurgitation II: Clinical Features and Diagnostic Tests

60
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...
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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

59
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...
59
Mitral Regurgitation IV: Nursing Management01:28

Mitral Regurgitation IV: Nursing Management

97
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...
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Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

51
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...
51
Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral Stenosis II: Clinical features and Diagnostic Tests

39
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...
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Related Experiment Video

Updated: Sep 18, 2025

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

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Atrial functional mitral regurgitation: definition, features, and unknowns.

Frank A Flachskampf1,2, Ruxandra Beyer3, Wolfgang Fehske4

  • 1Department of Medical Sciences, Uppsala University, 751 85, Uppsala, Sweden. frank.flachskampf@medsci.uu.se.

Clinical Research in Cardiology : Official Journal of the German Cardiac Society
|June 23, 2025
PubMed
Summary

Atrial functional mitral regurgitation (AFMR) stems from atrial enlargement, not ventricular issues, often linked to atrial fibrillation. This condition may be underestimated in heart failure patients due to overlapping symptoms.

Keywords:
Cardiac imagingEchocardiographyLeft atriumMitral regurgitationValvular heart disease

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Heart Valve Disease

Background:

  • Atrial functional mitral regurgitation (AFMR) is an underrecognized condition.
  • It is driven by atrial dilatation, commonly from persistent atrial fibrillation.
  • AFMR often coexists with diastolic dysfunction and heart failure with preserved ejection fraction.

Purpose of the Study:

  • To review current understanding and insights into AFMR.
  • To highlight the role of atrial changes in mitral regurgitation.
  • To clarify the relationship between AFMR, atrial fibrillation, and heart failure.

Main Methods:

  • Literature review of published studies on AFMR.
  • Analysis of mechanisms involving atrial annular dilatation and leaflet coaptation.
  • Comparison of AFMR characteristics with heart failure with preserved ejection fraction.

Main Results:

  • AFMR results from increased mitral annular area, causing poor leaflet closure.
  • The left ventricle is typically normal in size and function.
  • Regurgitation severity is usually moderate or moderate-to-severe by standard metrics.

Conclusions:

  • AFMR is primarily caused by atrial, not ventricular, enlargement.
  • The overlap in symptoms with heart failure with preserved ejection fraction suggests AFMR's role may be underestimated.
  • Further elucidation of AFMR's time course and symptomatic impact is needed.