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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 Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

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

Mitral Regurgitation II: Clinical Features and Diagnostic Tests

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

Mitral Valve Prolapse II: Assessment and Management

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 tachycardia.

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Related Experiment Video

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Biventricular Assessment of Cardiac Function and Pressure-Volume Loops by Closed-Chest Catheterization in Mice
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Mitral insufficiency and morbidity and mortality in left ventricular dysfunction.

Roger J F Baskett1, Derek V Exner, Gregory M Hirsch

  • 1Maritime Heart Centre and the Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS, Canada. rogerbaskett@hotmail.com

The Canadian Journal of Cardiology
|August 19, 2007
PubMed
Summary

Mitral insufficiency in heart failure patients significantly increases the risk of death and hospitalization. This finding highlights the importance of assessing mitral valve function in heart failure management.

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Area of Science:

  • Cardiology
  • Heart Failure Research
  • Valvular Heart Disease

Background:

  • Mitral insufficiency is common in heart failure patients.
  • The impact of mitral insufficiency on heart failure outcomes is not well understood.

Purpose of the Study:

  • To investigate the association between mitral insufficiency and mortality/hospitalization in heart failure.
  • To determine if mitral insufficiency is an independent predictor of adverse outcomes.

Main Methods:

  • Retrospective analysis of patients from the Studies Of Left Ventricular Dysfunction (SOLVD) trials.
  • Echocardiography used to assess mitral insufficiency presence and grade.
  • Comparison of mortality and heart failure hospitalization rates between patients with and without mitral insufficiency.

Main Results:

  • Patients with mitral insufficiency had over double the risk of death or heart failure hospitalization within two years.
  • This increased risk remained significant after adjusting for heart failure severity and treatment.
  • Moderate mitral insufficiency conferred an even greater independent risk.

Conclusions:

  • Mitral insufficiency is an independent predictor of adverse outcomes in patients with left ventricular dysfunction.
  • These findings have clinical implications for assessing and managing heart failure patients.
  • Further research into the management of mitral insufficiency in heart failure is warranted.